Abstract: Disclosed are mono-substituted cyclopentadienes, metal cyclopentadienyl complexes and methods for synthesizing them. The disclosed mono-substituted cyclopentadienes are synthesized by a selective catalytic carbon-carbon coupling reaction. The disclosed metal cyclopentadienyl complexes are synthesized from the disclosed mono-substituted cyclopentadienes. The disclosed metal cyclopentadienyl complexes include main group metal and transition metal cyclopentadienyl complexes, and may be used as deposition precursors contained in film forming compositions for film depositions in semiconductor industry, such as ALD, CVD, SOD, etc.

Abstract: In the method of the present invention for producing a thin film, including introducing, onto a substrate, a vapor that has been obtained by vaporizing a thin-film-forming material including a molybdenum imide compound represented by the following formula (I) and that includes the molybdenum imide compound; and then forming a thin film including molybdenum on the substrate by decomposing and/or chemically reacting the molybdenum imide compound. (In the formula, R1 though R10 each represent a hydrogen atom or a linear or branched alkyl group having 1 to 5 carbon atoms, and R11 represents a linear or branched alkyl group having 1 to 8 carbon atoms).

Abstract: Tridentate pincer ligand supported metal complexes are formed where the complex is a trianionic pincer ligand supported metal-alkylidyne complex or a tetra-anionic pincer-ligand supported metallacycloalkylene complex formed by addition of an alkyne to the trianionic pincer ligand supported metal-alkylidyne complex. The tridentate pincer ligand supported metal complex that includes a group 5-7 transition metal and an OCO trianionic pincer ligand or an alkyne adduct thereof and methods of preparing the complexes are disclosed. The use of the tridentate pincer ligand supported metal complex for the polymerization of alkynes is disclosed, where high molecular weight poly(alkyne)s can be formed in high yield. The poly(alkyne) can be a macrocyclic polymer.

Abstract: Molybdenum complexes and use thereof in thin film deposition, such as CVD and ALD are provided herein. The molybdenum complexes correspond in structure to Formula (I) and Formula (II), wherein R1, R3, R5, R7, R8 and R10 are independently and at each occurrence alkyl; R2, R6 and R9 are independently alkyl; R4 and R11 are independently and at each occurrence selected from the group consisting of alkyl, alkenyl, and alkynyl; x, z, a, c, d and f are independently zero, 1, or 2; y, b and e are independently zero or 1; and n and m are independently zero to 5.

Abstract: The current application describes tungsten oxo alkylidene complexes for olefin metathesis.

Abstract: Provided is a non-cyclopentadienyl-based chromium-ligand complex, preferably a chromium-ligand complex of formula (J): LCr(RA)m(D)k (J), wherein L is a non-Cp monoanionic ligand; Cr (chromium) is in a formal oxidation state of +3 or +2; when Cr formally is Cr+3, either m is 1 and RA is hydrocarbylene (a hydrocarbylene chromium-ligand complex of formula (J)) or m is 2 and each RA independently is hydrocarbyl (a dihydrocarbyl chromium-ligand complex of formula (J)), wherein each hydrocarbyl or hydrocarbylene of RA independently is unsubstituted or substituted by from 1 to 5 RAS; each RAS independently is a neutral aprotic heteroalkyl, neutral aprotic heterocycloalkyl, neutral aprotic heteroaryl, or neutral aprotic aryl; when Cr formally is Cr+2, m is 1 and RA is hydrocarbyl (a hydrocarbyl chromium-ligand complex of formula (J)); k is an integer of 0 or 1; D is absent when k is 0 or D is a neutral ligand when k is 1; wherein the chromium-ligand complex of formula (J) is overall neutral and lacks a cyclopentadien

Abstract: The present invention relates to pre-catalysts for olefin metathesis and composition involving these pre-catalysts.

Abstract: A non-aqueous secondary battery containing: a positive electrode containing a transition metal oxide as an active material thereof; a negative electrode; and a non-aqueous liquid electrolyte containing an electrolyte, an organic solvent, and less than 0.1 mol/L of an organometallic compound containing a transition element or a rare-earth element as a central metal thereof.

Abstract: The present invention provides methods for the synthesis of catalysts and precursors thereof. Methods of the invention may comprise combining a catalyst precursor and at least one ligand to generate a catalytically active species, often under mild conditions and in high yields. In some cases, a wide variety of catalysts may be synthesized from a single catalyst precursor. Methods of the invention may also include the preparation of catalysts which, under reaction conditions known in the art, may have been difficult or impossible to prepare and/or isolate due to, for example, steric crowding at the metal center. The present invention also provides catalyst compositions, and precursors thereof, which may be useful in various chemical reactions including olefin metathesis. In some cases, methods of the invention may reduce the number of synthetic and purification steps required to produce catalysts and/or other reaction products, as well as reducing time, cost, and waste production.

Abstract: A compound having the moiety M-[(C?C)n-M?]m. Each M and each M? is a transition metal. Each n is 1 or 2, and m is 2 or more. A method of reacting a transition metal halide with 1,2-dilithioacetylene or 1,4-dilithiodiacetylene to form a transition metal compound.

Abstract: Novel intercalation electrode materials including ternary acetylides of chemical formula: AnMC2 where A is alkali or alkaline-earth element; M is transition metal or metalloid element; C2 is reference to the acetylide ion; n is an integer that is 0, 1, 2, 3 or 4 when A is alkali element and 0, 1, or 2 when A is alkaline-earth element. The alkali elements are Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs) and Francium (Fr). The alkaline-earth elements are Berilium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra). M is a transition metal that is any element in groups 3 through 12 inclusive on the Periodic Table of Elements (elements 21 (Sc) to element 30 (Zn)). In another exemplary embodiment, M is a metalloid element.

Abstract: The present disclosure provides compositions for alkyne metathesis catalysts and methods for preparing enediynes and alkyne metathesis catalysts. The disclosure also provides methods for catalyzing alkyne metathesis reactions and polymerization of enediyne substrates to polydiacetylenes in solution-phase.

Abstract: The present application provides, among other things, compounds and methods for metathesis reactions. In some embodiments, a provided compound has the structure of formula I, II or III. In some embodiments, R1 of formula I, II or III comprises an electron-withdrawing group. In some embodiments, the present invention provides methods for preparing provided compounds.

Abstract: A method of making metal nanoparticles comprising contacting metal with a diazonium compound substituted with an organic substituent and allowing said metal to react with the diazonium compound thereby forming metal nanoparticles wherein each of said metal nanoparticles comprises a metal core bonded to an outer layer of said organic substituent as well as nanoparticles made by that method.

Abstract: Molybdenum complexes and use thereof in thin film deposition, such as CVD and ALD are provided herein. The molybdenum complexes correspond in structure to Formula (I) and Formula (II), wherein R1, R3, R5, R7, R8 and R10 are independently and at each occurrence alkyl; R2, R6 and R9 are independently alkyl; R4 and R11 are independently and at each occurrence selected from the group consisting of alkyl, alkenyl, and alkynyl; x, z, a, c, d and f are independently zero, 1, or 2; y, b and e are independently zero or 1; and n and m are independently zero to 5.

Abstract: The present application provides, among other things, novel compounds and methods for metathesis reactions. In some embodiments, a provided compound has the structure of formula I. In some embodiments, the present invention provides methods for preparing a compound of formula I. In some embodiments, the present invention provides metathesis methods comprising providing a compound of formula I.

Abstract: The invention relates to a method of forming an olefin from a first olefin and a second olefin in a metathesis reaction, comprising step (i): (i) reacting the first olefin with the second olefin in the presence of a compound that catalyzes said metathesis reaction such that the molar ratio of said compound to the first or the second olefin is from 1:500 or less, and the conversion of the first or the second olefin to said olefin is at least 50%, characterized in that as compound that catalyzes said metathesis reaction a compound of the following formula is used: wherein M is Mo or W; R1 is aryl, heteroaryl, alkyl, or heteroalkyl; optionally substituted; R2 and R3 can be the same or different and are hydrogen, alkyl, alkenyl, heteroalkyl, heteroalkenyl, aryl, or heteroaryl; optionally substituted; R5 is alkyl, alkoxy, heteroalkyl, aryl, heteroaryl, silylalkyl, silyloxy, optionally substituted; and R4 is a residue R6—X—, wherein X?O and R6 is aryl, optionally substituted; or X?S and R6 is aryl, opt

Abstract: The present application provides, among other things, novel compounds for metathesis reactions, and methods for preparing and using provided compounds. In some embodiments, the present invention provides compounds having the structure of formula I or II. In some embodiments, the present invention provides methods for preparing a compound of formula I or II. In some embodiments, the present invention provides methods for using a provided compound. In some embodiments, a provided compound is useful for stereoselective ring-opening metathesis polymerization. In some embodiments, a provided metathesis method provides cis and/or isotactic polymers.

Abstract: A compound having the moiety M-[(C?C)n-M?]m. Each M and each M? is a transition metal. Each n is 1 or 2, and m is 2 or more. A method of reacting a transition metal halide with 1,2-dilithioacetylene or 1,4-dilithiodiacetylene to form a transition metal compound.

Abstract: The present invention provides methods for the synthesis of catalysts and precursors thereof. Methods of the invention may comprise combining a catalyst precursor and at least one ligand to generate a catalytically active species, often under mild conditions and in high yields. In some cases, a wide variety of catalysts may be synthesized from a single catalyst precursor. Methods of the invention may also include the preparation of catalysts which, under reaction conditions known in the art, may have been difficult or impossible to prepare and/or isolate due to, for example, steric crowding at the metal center. The present invention also provides catalyst compositions, and precursors thereof, which may be useful in various chemical reactions including olefin metathesis. In some cases, methods of the invention may reduce the number of synthetic and purification steps required to produce catalysts and/or other reaction products, as well as reducing time, cost, and waste production.

Abstract: The present invention relates to a more advanced preparation method of organic-transition metal hydride as a hydrogen storage material, precisely a more advanced preparation method of organic-transition metal hydride containing aryl or alkyl group that facilitates safe and reverse storage of massive amount of hydrogen. The present invention relates to a preparation method of an organic-transition metal hydride comprising the steps of preparing a complex reducing agent composition by reacting alkali metal, alkali earth metal or a mixture thereof and (C10-C20) aromatic compound in aprotic polar solvent and preparing organic-transition metal hydride by reacting the prepared complex reducing agent composition and organic transition metal halide. The method of the present invention has advantages of minimizing the numbers and the amounts of byproducts by using a complex reducing agent and producing organic-transition metal hydride safely without denaturation under more moderate reaction conditions.

Abstract: A catalyst for the metathesis of olefins in general and specifically for the production of propylene from ethylene and butylene has been developed. The catalyst comprises a tungsten metal compound, which contains at least one tungsten-fluoro bond, dispersed or grafted onto a support. A specific example of the catalyst is the compound WOF(CH2CMe3)3 grafted onto a silica support.

Abstract: Novel N-heterocyclic carbene ligand precursors, N-heterocyclic carbene ligands and N-heterocyclic metal-carbene complexes are provided. Metal-carbene complexes comprising N-heterocyclic carbene ligands can be chiral, which are useful for catalyzing enantioselective synthesis. Methods for the preparation of the N-heterocyclic carbene ligands and N-heterocyclic metal-carbene complexes are given.

Abstract: The disclosure provides organometallic frameworks, catalysts and sensors. In one aspect, the organometallic framework comprises di-isocyanide group.

Abstract: Embodiments of the invention are directed to ONO pincer ligands that can be in a trianionic, protonated or protonated equivalent form. The ONO pincer ligand can be combined with a transition metal comprising compound to form an ONO pincer ligand comprising transition metal complex. By choice of the ONO pincer ligand structure, the steric and electronic properties of the transition metal complexes therefrom can be controlled. The ONO pincer ligands comprise a central nitrogen atom that is disubstituted with a pair of three atom comprising bridges where the three atoms are three sp2 hybridized carbons or the three atoms are a pair of sp2 hybridized carbons and an sp3 hybridized carbon or silicon.

Abstract: Novel metal complexes useful in the area of agriculture, notably as agents for treating metal deficiency. The novel metal complexes comprise at least one metal selected from the metal trace elements essential for the development of plants, at least one first ligand selected from the lignosulfonates, and derivatives thereof, and at least one second ligand selected from the multidentate organic ligands.

Abstract: The present disclosure provides compositions for alkyne metathesis catalysts and methods for preparing enediynes and alkyne metathesis catalysts. The disclosure also provides methods for catalyzing alkyne metathesis reactions and polymerization of enediyne substrates to polydiacetylenes in solution-phase.

Abstract: The present invention provides methods for the synthesis of catalysts and precursors thereof. Methods of the invention may comprise combining a catalyst precursor and at least one ligand to generate a catalytically active species, often under mild conditions and in high yields. In some cases, a wide variety of catalysts may be synthesized from a single catalyst precursor. Methods of the invention may also include the preparation of catalysts which, under reaction conditions known in the art, may have been difficult or impossible to prepare and/or isolate due to, for example, steric crowding at the metal center. The present invention also provides catalyst compositions, and precursors thereof, which may be useful in various chemical reactions including olefin metathesis. In some cases, methods of the invention may reduce the number of synthetic and purification steps required to produce catalysts and/or other reaction products, as well as reducing time, cost, and waste production.

Abstract: The invention relates to highly active and selective catalysts for alkyne metathesis. In one aspect, the invention includes a multidentate organic ligand wherein one substrate-binding site of the metal center is blocked. In another aspect, the invention includes N-quaternized or silane-based multidentate organic ligands, capable of binding to metals. In yet another aspect, the invention includes N-quaternized or silane-based multidentate catalysts. The catalysts of the invention show high robustness, strong resistance to small alkyne polymerization and significantly enhanced catalytic activity compared to their corresponding non-quaternized or non-silane-based multidentate catalyst analogues.

Abstract: Dicyclopentadienyl molybdenum crosslinked complexes which can be represented by general formula (1) below are provided, the use thereof as friction-modifiers and lubricating compositions which contain these compounds are also provided In this formula X is the element oxygen or the element sulphur, Y is the element oxygen or Y is absent, and R1 to R10 are groups selected individually from the group comprising hydrogen, the methyl group and the ethyl group.

Abstract: A catalyst system comprising a half-sandwich chromium complex, an activator support and an optional cocatalyst. A compound of formula Cp?Cr(Cl)2(Ln), where Cp? is ?5-C5H4CH2CH2CH?CH2 and Ln is pyridine, THF or diethylether. A compound of formula Cp?Cr(Cl)2(Ln), where Cp? is ?5-C5H4C(Me)2CH2CH2CH?CH2 and Ln is pyridine, THF or diethylether.

Abstract: A method of modifying a carbon material is disclosed. The method comprises: bonding a metal to a carbon material to form a metal-carbon complex comprising the metal and a benzene unit, wherein the carbon material comprises extended sp2-bonded carbon atoms.

Abstract: An organometallic molybdenum acetylide dioxo complex of formula (?5-C5H5)MoO2(—Cs?CPh) and provides a simple, short, efficient process for the synthesis of organometallic molybdenum dioxo complex which is used as catalyst for a number of oxidation reactions.

Abstract: Molybdenum (IV) amide complexes are disclosed herein corresponding in structure to Formula (I): wherein: L is —NR1R2; R1 and R2 are C1-C6-alkyl or hydrogen; R is C1-C6-alkyl; and n is zero, 1, 2 or 3. Further, methods of forming MoO2 films by atomic layer deposition (ALD) using Formula (I) complexes and Mo[N(Me)(Et)]4 are disclosed herein.

Abstract: Disclosed are metal organic frameworks that adsorb nitric oxide, NO-loaded metal organic frameworks, methods of preparing the NO-loaded metal organic frameworks, methods of releasing the nitric oxide into a solution or into air, and uses of the metal organic frameworks.

Abstract: Novel N-heterocyclic carbene ligand precursors, N-heterocyclic carbene ligands and N-heterocyclic metal-carbene complexes are provided. Metal-carbene complexes comprising N-heterocyclic carbene ligands can be chiral, which are useful for catalyzing enantioselective synthesis. Methods for the preparation of the N-heterocyclic carbene ligands and N-heterocyclic metal-carbene complexes are given.

Abstract: The current application describes tungsten oxo alkylidene complexes for olefin metathesis.

Abstract: This invention relates to organometallic precursor compounds represented by the formula (H)mM(R)n wherein M is a metal or metalloid, R is the same or different and is a substituted or unsubstituted, saturated or unsaturated, heterocyclic radical containing at least one nitrogen atom, m is from 0 to a value less than the oxidation state of M, n is from 1 to a value equal to the oxidation state of M, and m+n is a value equal to the oxidation state of M, a process for producing the organometallic precursor compounds, and a method for producing a film or coating from the organometallic precursor compounds.

Abstract: The present invention provides methods for the synthesis of catalysts and precursors thereof. Methods of the invention may comprise combining a catalyst precursor and at least one ligand to generate a catalytically active species, often under mild conditions and in high yields. In some cases, a wide variety of catalysts may be synthesized from a single catalyst precursor. Methods of the invention may also include the preparation of catalysts which, under reaction conditions known in the art, may have been difficult or impossible to prepare and/or isolate due to, for example, steric crowding at the metal center. The present invention also provides catalyst compositions, and precursors thereof, which may be useful in various chemical reactions including olefin metathesis. In some cases, methods of the invention may reduce the number of synthetic and purification steps required to produce catalysts and/or other reaction products, as well as reducing time, cost, and waste production.

Abstract: The present invention relates generally to olefin metathesis. In some embodiments, the present invention provides methods for Z-selective ring-closing metathesis.

Abstract: The present invention provides dicyclopentadienyl molybdenum crosslinked complexes which can be represented by general formula (1) below, the use thereof as friction-modifiers and lubricating compositions which contain these compounds. In this formula X is the element oxygen or the element sulphur, Y is the element oxygen or Y is absent, and R1 to R10 are groups selected individually from the group comprising hydrogen, the methyl group and the ethyl group.

Abstract: Provided herein are metal nanoparticles, metal nanopowders, methods of synthesizing the same, and radiation shields using the same.

Abstract: The present invention relates to monohydroindacenyl complexes as active catalytic components in the copolymerization of ethylene. The complexes are suitable for direct preparation of ethylene copolymers having a narrow molecular distribution as well as the desired levels of low density and preferably a predetermined value of glass transition temperature Tg. The produced copolymers showing improved elastomeric performance can be prepared in a single step during polymerization reaction, thus avoiding a blending step following the polymerization step.

Abstract: This invention relates to new transition metal complexes for use in olefin polymerization and oligomerization. The active complex is a pyridine amide having a metallocenyl substituent as part of the ligand structure. The invention also relates to novel precursors for the ligand systems of such complexes obtained from metallocenyl-substituted pyridine compounds through sequences involving addition-condensation or lithium-halogen exchange (with subsequent metathesis) reactions.

Abstract: This invention relates to organometallic compounds represented by the formula (L1)yM(L2)z-y wherein M is a Group 5 metal or a Group 6 metal, L1 is a substituted or unsubstituted anionic 6 electron donor ligand, L2 is the same or different and is (i) a substituted or unsubstituted anionic 2 electron donor ligand, (ii) a substituted or unsubstituted cationic 2 electron donor ligand, or (iii) a substituted or unsubstituted neutral 2 electron donor ligand; y is an integer of 1, and z is the valence of M; and wherein the sum of the oxidation number of M and the electric charges of L1 and L2 is equal to 0; a process for producing the organometallic compounds; and a method for depositing a metal and/or metal carbide/nitride layer, e.g., a tungsten, tungsten nitride, tungsten carbide, or tungsten carbonitride layer, on a substrate by the thermal or plasma enhanced dissociation of the organometallic precursor compounds, e.g., by CVD or ALD techniques.

Abstract: A process for synthesizing an organic transition metal complex compound with an atom group having an electron-donor ability, in an industrially and economically advantageous manner, without a compound having a proton-donor ability being a metal salt, and a metathesis catalyst produced with the use of the above process, are provided. A process for producing an organic transition metal complex compound in which an atom group having an electron-withdrawing ability can be converted into an atom group having a stronger electron-donor ability, by contacting an compound having a proton-donor ability with the organic transition metal complex compound with an atom group having an electron-withdrawing ability, in the presence of an basic compound, and a metathesis catalyst of which the content of an alkali metal is reduced, and which is obtainable with the use of the above process, are provided.

Abstract: The disclosure provides organometallic frameworks, catalysts and sensors. In one aspect, the organometallic framework comprises di-isocyanide group.

Abstract: An embodiment of the invention is a novel Cr(V) OCO3- trianionic pincer ligand complex. Another embodiment of the invention is a catalytic method for oxidation of a substrate aerobically in the presence of a source of oxygen, where the novel Cr(V) OCO3- trianionic pincer ligand complex acts as the catalyst. The substrate can be a phosphine, amine, sulfide, alkene, alkane or a second metal complex. Another embodiment of the invention is directed to NCN pincer ligands that can form trianionic pincer ligand complexes.

Abstract: The present invention provides dicyclopentadienyl molybdenum crosslinked complexes which can be represented by general formula (1) below, the use thereof as friction-modifiers and lubricating compositions which contain these compounds. In this formula X is the element oxygen or the element sulphur, Y is the element oxygen or Y is absent, and R1 to R10 are groups selected individually from the group comprising hydrogen, the methyl group and the ethyl group.

Abstract: A complex for transference of a nitrogen atom to an electrophilic reagent comprises a hard-hard-hard pincer ligand and an early transition metal bound to a nitride. The pincer ligand can be an OCO ligand and the transition metal can be Mo. The complex can be used to transfer the nitrogen atom bound to the metal to an electrophile in a method to produce a nitrogen containing molecule. In one novel nitrogen transfer reaction, a Mo—N triple bond is broken where the nitrogen transfers to the sp2 hybridized carbon of an acid chloride to form a nitrile.