Abstract: This invention provides an anionic borate ligand, and its synthesis. Zwitterionic complexes formed by the ligand and a metal, and Group 9 and 10 metals in particular, are described. Uses of the complexes in stoichiometric and catalytic reaction chemistry are also provided.

Abstract: Bis (fluoroaryl) borane derivative is produced by reacting tris (fluoroaryl) borane with a compound, such as water, ethanol, ammonia and the like, in a hydrocarbon solvent at a molar ratio raging from 1:0.9 to 1:1.1. It is more preferable that the reaction is carried out while the hydrocarbon solvent is distilled off. It is more preferable that hydrocarbon solvent is substantially an aliphatic hydrocarbon solvent. With this arrangement, it is possible to provide a method for producing and isolating the bis (fluoroaryl) borane derivative of a high purity, with ease and at a low cost.

Abstract: The present invention provides a method for detecting an analyte, comprising providing a sensor comprising a substrate coated with a free electron metal, a matrix layer disposed on the free electron metal, the matrix layer comprising an organic compound, wherein the organic compound has a boronic acid complexing moiety and, a boronic acid moiety complexed to the boronic acid complexing moiety; and contacting the sensor with the analyte to elicit a response; and measuring the response thereby detecting the analyte.

Abstract: The present invention relates to organometallic compounds of transition metals with an indenyl ligand bonded in the 2-position and substituted in the 1,3-position, a process for their production, and their use as catalysts for the (co)polymerization of olefinic and/or diolefinic monomers.

Abstract: Group 4 metal complexes of the constrained geometry type, catalysts derived therefrom and polymerization processes using the same, characterized by a nitrogen containing aliphatic or cycloaliphatic moiety that is substituted with one or more aryl groups, an aryl-substituted silane bridging group, or one or more Group 14 organometalloid substituted hydrocarbyl substituents on the metal.

Abstract: Cationic ruthenium complexes of the formula A or B or mixtures containing them, where B may be stabilized by a further ligand L4 and X is an anion which does not coordinate or coordinates weakly to the metal center, Y is a monodentate or multidentate anionic ligand, R and R′ are each, independently of one another, hydrogen or a substituted or unsubstituted C1-C20-alkyl, C6-C20-aryl or C7-C20-alkylaryl radical and L1, L2, L3 and L4 are, independently of one another, uncharged electron donor ligands, are described.

Abstract: An improved process for forming bridged Group 4 transition metal complexes using boron trihalide and a magnesium dicyclopentadienyl compound to form a dicyclopentadienyl boron halide intermediate for subsequent metallation or other synthetic use and novel metal complexes.

Abstract: The present invention provides weakly coordinating anion salts comprising a reactive cation and uses thereof. In particular, the present invention provides compounds of the formula MxQy and uses thereof, where M, Q, x, and y are those defined herein.

Abstract: This invention relates to an olefin polymerization catalyst composition comprising the product of the combination of at least one activator and at least two different transition metal compounds each of which is represented by the formula: ((Z)XAt(YJ))qMQn  (I) where M is a metal selected from Group 3 to 13 or lanthanide and actinide series of the Periodic Table of Elements; Q is bonded to M and each Q is a monovalent, divalent or trivalent anion; X and Y are bonded to M; X and Y are independently C or a heteroatom, provided that at least one of X and Y is a heteroatom and Y is contained in a heterocyclic ring J, where J comprises from 2 to 50 non-hydrogen atoms; Z is bonded to X, where Z comprises 1 to 50 non-hydrogen atoms; t is 0 or 1; when t is 1, A is a bridging group joined to at least one of X, Y or J; q is 1 or 2; n is the oxidation state of M minus q if Q is a monovalent anion, n is (the oxidation state of M−q)/2, if Q is a bivalent anion or n is (the oxidation state of M−q)/3

Abstract: The invention provides compounds for detecting sacchharides by electrochemistry. The compounds have a structure that includes a first boronic acid group attached by a first linker group to a first tertiary amine. The first tertiary amine is attached to a reporter group that includes an organometalic reporter moiety. A spacer group attaches the first tertiary amine to a second tertiary amine. The second tertiary amine is attached to an R group and a second linker group. The second linker group is attached to a second boronic acid group. In preferred embodiments, the compound selectively detects glucose and has a higher relative stability constant for glucose than for other saccharides.

Abstract: Chloropentafluorobenzene or bromopentafluorobenzene is formed by heating perhalobenzene, C6FnX6-n where n is 0 to 4, and each X is, independently, a chlorine or bromine atom, with alkali metal fluoride, and an aminophosphonium catalyst (e.g., (Et2N)4PBr). The resultant chloropentafluorobenzene or bromopentafluorobenzene can be converted into a pentafluorophenyl Grignard reagent or a pentafluorophenyl alkali metal compound. This in turn can be converted into tris(pentafluorophenylborane), which can be converted into a single coordination complex comprising a labile tetra(pentafluorophenyl)boron anion (e.g., a trialkylammonium tetra(pentafluorophenyl)boron complex or an N,N-dimethylanilinium tetra(pentafluorophenyl)boron complex).

Abstract: The present invention provides weakly coordinating anion salts comprising a reactive cation and uses thereof. In particular, the present invention provides compounds of the formula MxQy and uses thereof. Preferably, each M is independently a cation with at least one M being a reactive cation as defined herein. Q is a fluorinated polyhedral borate moiety. And x and y are absolute values of the oxidation states of Q and M, respectively.

Abstract: A transition metal compound having a ligand with an azaferrocene structure or a ferrocene structure. The transition metal compound is used in combination with an activating cocatalyst, as a catalyst for polymerization of olefins.

Abstract: 1.

Abstract: An electrochemical ion exchange cell comprises a metal carbollide as ion exchange material. The carbollide is preferably a polynuclear cobalt dicarbollide and is typically substituted by chlorine. Also novel are polynuclear metal carbollides comprising a substituted carbollide cage, as well as metal carbollides comprising a carbollide cage substituted by a moiety having a —COOH or —SH group.

Abstract: &pgr;-complex compounds and in particular metallocene compounds of formula (Ia)(Ib), in which &pgr;I and &pgr;II represent &pgr;-systems, D designates a donor atom and A designates an acceptor atom, D and A being linked by a reversible coordinative bond such that the donor group assumes a positive (partial) charge and the acceptor group assumes a negative (partial) charge, at least one of D and A being part of the associated &pgr;-system in each case, M stands for a transition metal of the 3rd, 4th, 5th or 6th subgroup of the (Mendelian) periodic system of elements, X designates an anion equivalent and n designates the number zero, one, two three or four depending on the charges of M and those of &pgr;I and &pgr;II, are novel and can be used as catalysts for the (co)polymerization of olefins, i-olefins, alkines and/or diolefins or for ring-opening polyaddition.

Abstract: A process for preparing boratabenzene derivatives is provided. The process includes the hydrogenation of a compound containing a boranaphthalene functional group to form a boratabenzene-containing compound. Depending on the compound containing a boranaphthalene functional group, the resulting boratabenzene compound may be converted into a catalyst suitable for olefin polymerization. A process for forming a boratabenzene derivative from a halo-dioxaborolane is also provided. In this process, a halo-dioxaborolane is reacted with a piperylide salt for form a pentadienyl dioxaborolane. The pentadienyl-dioxaborolane is reacted with a strong base to form an intermediate boratacyclohexanediene salt. The intermediate boratacyclohexanediene salt is then reacted with a trialkylaluminum compound to form an alkylboratabenzene salt.

Abstract: Novel boron-substituted derivatives of cyclopentadiene and metal complexes thereof which are useful in the formulation of catalyst for the polymerization of olefins.

Abstract: A process for preparing boratabenzene derivatives is provided. The process includes the hydrogenation of a compound containing a boranaphthalene functional group to form a boratabenzene-containing compound. Depending on the compound containing a boranaphthalene functional group, the resulting boratabenzene compound may be converted into a catalyst suitable for olefin polymerization. A process for forming a boratabenzene derivative from a halo-dioxaborolane is also provided. In this process, a halo-dioxaborolane is reacted with a piperylide salt for form a pentadienyl dioxaborolane. The pentadienyl-dioxaborolane is reacted with a strong base to form an intermediate boratacyclohexanediene salt. The intermediate boratacyclohexanediene salt is then reacted with a trialkylaluminum compound to form an alkylboratabenzene salt.

Abstract: The present invention relates to a catalyst system containing (a) at least one compound of the formula (II): where R are each a halogen or a C1-40 group; X are each a C1-40 haloalkylene, C6-40 arylene, C6-40 haloarylene, C7-40 arylalkylene, C7-40 haloarylalkylene, C2-40 alkynylene, a haloalkynylene group containing up to 40 carbon atoms, C2-40 alkenylene, or C2-40 haloalkenylene group; M are each an element of group IIa, IIIa, IVa, or Va of the Periodic Table of the elements; A is a cation of group Ia, IIa, IIIa of the Periodic Table of the Elements; a, b, or c is an interger from 0 to 10 and if a=0 then b=0; if a≧1 then a=b·c; d, f, or g is 0 or 1 and when d=0, g is 0; j is an integer from 1 to 5 and (b) at least one metallocene.

Abstract: The organo-Lewis acids are novel triarylboranes which are are highly fluorinated. Triarylboranes of one such type contain at least one ring substituent other than fluorine. These organoboranes have a Lewis acid strength essentially equal to or greater than that of the corresponding organoborane in which the substituent is replaced by fluorine, or have greater solubility in organic solvents. Another type of new organoboranes have 1-3 perfluorinated fused ring groups and 2-0 perfluorophenyl groups. When used as a cocatalyst in the formation of novel catalytic complexes with d- or f-block metal compounds having at least one leaving group such as a methyl group, these triorganoboranes, because of their ligand abstracting properties, produce corresponding anions which are capable of only weakly, if at all, coordinating to the metal center, and thus do not interfere in various polymerization processes such as are described.

Abstract: Organo-Lewis acids of the formula BR′R″2 wherein B is boron, R′ is fluorinated biphenyl, and R″ is a fluorinated phenyl, fluorinated biphenyl, or fluorinated polycyclic fused ring group, and cationic metallocene complexes formed therewith. Such complexes are useful as polymerization catalysts.

Abstract: Polymerization initiator comprising an alkaline earth metal compound chosen from the group a) of heteroleptic alkaline earth metal compounds of the formula I L—M—R  (I)  or b) of cationic alkaline earth metal complexes of the formula II [D→M—R]+X−  (II),  where M: is Ca, Sr or Ba, L: is a polymerization-inactive ligand, R: is a polymerization-active ligand, D: is a donor ligand, and X: is a non-coordinating anion, and processes for the preparation of the polymerization initiators and processes for anionic polymerization in the presence of the polymerization initiators.

Abstract: A photo-latent initiator for photopolymerization comprises crystalline ion-association substance having the general formula (I): [{C5(R1)n}2mMm]1+[{B(R2)4}−]l Said initiator can polymerize a cationically polymerizable organic substance only with light irradiation without additional heating. It is extremely stable when stored alone or in the form of a mixture with a cationically polymerizable organic substance.

Abstract: Disclosed are compounds useful as catalyst activators for olefin polymerization, comprising structures of the following formulae: wherein: L+ is a protonated derivative of an element of Group 15 of the Periodic Table of the Elements, additionally bearing two hydrocarbyl substituents of from 1 to 50 carbons each, or a positively charged derivative of an element of Group 14 of the Periodic Table of the Elements, said Group 14 element being substituted with three hydrocarbyl substituents of from 1 to 50 carbons each; R1 is a divalent linking group of from 1 to 40 non-hydrogen atoms; R2 independently each occurrence is a ligand group of from 1 to 50 nonhydrogen atoms with the proviso that in a sufficient number of occurrences to balance charge in the compound, R2 is L+—R1—; M1 is boron, aluminum or gallium; Arf independently each occurrence is a monovalent, fluorinated organic group containing from 6 to 100 non-hydrogen atoms; Y is a Group 15 element; and Z is a Grou

Abstract: This invention is directed to a group of novel homologous eight membered ring compounds having a metal, such as copper, reversibly bound in the ring and containing carbon, nitrogen, silicon and/or other metals.

Abstract: The present invention relates to a bidenitate diimino-complex of nickel or palladium containing at least one group OSi(R)3 wherein each R, equal to or different from each other, is selected from the group consisting of: C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C2-C20 alkenyl, C7-C20 arylalkyl, C7-C20 alkylaryl, C8-C20 arylalkenyl, and C8-C20 alkenylaryl, linear or branched, preferably each R is independently methyl, ethyl or propyl.

Abstract: Organo-Lewis acids of the formula BR′R″2 wherein B is boron, R′ is fluorinated biphenyl, and R″ is a fluorinated phenyl, fluorinated biphenyl, or fluorinated polycyclic fused ring group, and cationic metallocene complexes formed therewith. Such complexes are useful as polymerization catalysts.

Abstract: The present invention relates to a supported chemical compound of the formula (I) in which Ac+ is a cation, c is an integer from 1 to 10, b is an integer ≧0, T is a support, y is an integer ≧1, a is an integer from 0 to 10, where a·y=c·b, and N is a unit of the formula (II)  in which R independently at each occurrence is an identical or different substituent of M1 such as a halogen atom or a C1-C40 carbon-containing group, such as a C1-C40-alkyl, C1-C40-haloalkyl, C6-C40-aryl, C6-C40-haloaryl, C7-C40-arylalkyl or C7-C40-halo-arylalkyl group, X independently at each occurrence is identical or different and is a C1-C40 carbon-containing group, for example a divalent, carbon-containing group such as a C1-C40-alkylene, C1-C40-haloalkylene, C6-C4-arylene, C6-C40-haloarylene, C7-C40-arylalkylene or C7-C40-halo-arylalkylene, C2-C40-alkynylene, C2-C40-haloalkynylene, C2-C40-alkenylene or C2-C40haloalkenylene group, or a trivalent, carbo

Abstract: An improved process for forming bridged Group 4 transition metal complexes using boron trihalide and a magnesium dicyclopentadienyl compound to form a dicyclopentadienyl boron halide intermediate for subsequent metallation or other synthetic use and novel metal complexes.

Abstract: Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their preparation, and their use as catalysts.

Abstract: In a process for preparing polymers based on monomers having a C═C double bond by homopolymerization or copolymerization of these monomers in the presence of a catalyst system comprising a metallocene complex A) and a compound B) capable of forming metallocenium ions and, if desired, an organometallic compound of main group I, II or III of the Periodic Table of the Elements C), the metallocene complex A) used is a compound of the formula (I) where the substituents and indices have the following meanings: R1 to R11 are hydrogen, C1-C10-alkyl, 5- to 7-membered cycloalkyl which may in turn bear C1-C6-alkyl groups as substituents, C6-C15-aryl or arylalkyl, where two adjacent radicals R1 to R8 may together form a cyclic group having from 4 to 15 carbon atoms, or Si(R12)3, where R12 is C1-C10-alkyl, C6-C15-aryl or C3-C10-cycloalkyl, M is a metal of transition groups III to VI of the Periodic Table of the Elements or a metal of the lanthanide series, X are identical or different and are hy

Abstract: A Group 4 transition metal complex containing a boron or aluminum bridging group containing a nitrogen containing electron donating group, especially an amido group.

Abstract: Organo-Lewis acids of the formula BR′R″2 wherein B is boron, R′ is fluorinated biphenyl, and R″ is a fluorinated phenyl, fluorinated biphenyl, or fluorinated polycyclic fused ring group, and cationic metallocene complexes formed therewith. Such complexes are useful as polymerization catalysts.

Abstract: This invention relates to heteroatom substituted cyclopentadienyl-containing ligands, metal complexes containing these ligands, catalyst systems prepared from catalyst components comprising these metal complexes. The metal complexes contain a “a” heteroatom-Cp bond or a ring heteroatom-Cp bond in the 3-position of the Cp. In preferred metal complexes the ligand is a 3-heteroatom substituted indenyl group. The catalyst systems for olefin polymerization may be used at high temperatures, are highly active and produce high molecular weight polymer.

Abstract: This invention relates to an olefin polymerization catalyst composition comprising the product of the combination of at least one activator and at least two different transition metal compounds each of which is represented by the formula: ((Z)XAt(YJ))qMQn  (I) where M is a metal selected from Group 3 to 13 or lanthanide and actinide series of the Periodic Table of Elements; Q is bonded to M and each Q is a monovalent, divalent or trivalent anion; X and Y are bonded to M; X and Y are independently C or a heteroatom, provided that at least one of X and Y is a heteroatom and Y is contained in a heterocyclic ring J, where J comprises from 2 to 50 non-hydrogen atoms; Z is bonded to X, where Z comprises 1 to 50 non-hydrogen atoms; t is 0 or 1; when t is 1, A is a bridging group joined to at least one of X, Y or J; q is 1 or 2; n is the oxidation state of M minus q if Q is a monovalent anion, n is (the oxidation state of M−q)/2, if Q is a bivalent anion or n is (the oxidation state of M−q)/3

Abstract: Described are methods of preparing organometallic complexes, including cyclopentadienyliron (II) arene complexes.

Abstract: A compound useful as a catalyst or as a cocatalyst in combination with a Group 3-10 metal for addition polymerizations corresponding to the formula: [M′Q12L′I′]+(Arf3MQ2)— wherein: M′ is aluminum, gallium, or indium.

Abstract: Syndio-isoblock polymers of 1-olefins having molecular chains which contain syndiotactic and isotactic sequences are obtained if the polymerization of the 1-olefins is carried out using a catalyst which is composed of a bridge chiral metallocene of the formula I an an aluminoxane. The polymers have some rubber-like properties.

Abstract: Metallocene compounds of the formula where CpI and CpII are carbanions having a cyclopentadienyl-containing structure, D is a donor atom and A is an acceptor atom, where D and A are linked by a reversible coordinative bond in such a way that the donor group takes on a positive (partial) charge and the acceptor group takes on a negative (partial) charge, M represents a transition metal of transition group III, IV, V or VI of the Periodic Table of the Elements (Mendeleev), X is one anion equivalent and n is, depending on the charge of M, zero, one, two, three or four, are new and can be used as catalysts for the (co)polymerization of olefins, i-olefins, alkines and/or diolefins or for ring-opening polyaddition. A typical X-ray structure analysis is represented by formula 18a.

Abstract: The present invention provides compounds comprising a polyhalogenated heteroborane anion of the formula RaZBbHcFdXe(OR″)f−1, and a method for producing the same. Specifically, the present invention provides compounds comprising a polyfluorinated monocarborane anion.

Abstract: Isospecific and/or syndiospecific catalysts and processes for the propagation of an isotactic and/or syndiotactic polymer chain derived from an ethylenically unsaturated monomer which contains 3 or more carbon atoms or is a substituted vinyl compound. The catalysts comprise a stereorigid, stereodirected and stereolocked metallocene and/or metallocene cation catalysts, characterized by having &bgr; stereodirecting substituents and &agr; stereolocking substituents such that the catalysts have overall either Cs or C2 (or pseudo-Cs or C2) symmetry and such that the substituents define the orientation of the growing polymer chain end and resulting in tactioselectivity of successive monomer additions. Methods are also described for the preparation and use of these unique catalysts.

Abstract: A novel organometallic compound of formula M[(.mu.-OR').sub.2 M'R.sub.2 ].sub.2 can be vaporized at a low temperature and advantageously employed in the CVD of a heterometallic oxide film of the MM'.sub.2 O.sub.4 type, wherein M is a divalent element such as Be, Mg, Zn or Cd; M' is a Group 13 element such as Al or Ga; and R and R' are each independently a C.sub.1-10 alkyl group, with the proviso that if M is Mg, M' is not Al.

Abstract: A catalyst composition prepared by reacting together(a) a source of a Group VIII metal(b) a bidentate phosphine ligand having at least two phosphorus atoms joined by a bridging group of the formula--(N).sub.x --(P).sub.y --N--where x is 0 or 1 and y is 0 or 1, and(c) a promoteris disclosed. The Group VIII metal is preferably palladium. The promoter can be a weakly or non-coordinating anion. Alternatively it can be a boron hydrocarbyl compound or an aluminoxane.Also disclosed are novel bidentate phosphine ligands and intermediates therefor as well as novel palladium complexes. The catalysts are used in the preparation of polyketones.

Abstract: The present invention provides compounds comprising a polyhalogenated heteroborane anion of the formula R.sub.a ZB.sub.b H.sub.c F.sub.d X.sub.e (OR").sub.f.sup.-1, and a method for producing the same. Specifically, the present invention provides compounds comprising a polyfluorinated monocarborane anion.

Abstract: The invention includes hydrolyzable and polymerizable silanes, methods of making them and using them to obtain silicic acid(hetero)polycondensates and silicic acid(hetero)polymerizates. The hydrolyzable and polymerizable silanes have the formula I, ##STR1## wherein A=O, S, NH or C(O)O; wherein B=a straight chain or branched organic residue with at least one C.dbd.C double bond and from 4 to 50 carbon atoms;R is an alkyl group, alkenyl group, aryl group, alkylaryl group or an arylalkyl group;R' is a substituted or unsubstituted alkylene group, arylene group, arylenealkylene group or alkylenearylene group each having zero to ten carbon atoms, with the proviso that the substituted groups each have at least one oxygen atom, sulfur atom and/or amine group substituent;R.sup.

Abstract: The present invention relates to nietallocene compounds characterized by the following formulas:(LR.sub.k).sub.z [LR.sub.k-f (R.sup.I OH).sub.f ].sub.x MX.sub.yI ##STR1## wherein: L, equal to or different from each other, is selected from the group comprising: cyclopentadienyl, indenyl, tetrahydroindenyl, fluorenyl, octahydrofluorenyl or benzoindenyl; each R is independently selected from hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.20 cycloalkyl, C.sub.6 -C.sub.20 aryl, C.sub.3 -C.sub.20 alkenyl C.sub.7 -C.sub.20 arylalkyl, C.sub.7 -C.sub.20 alkylaryl, C.sub.8 -C.sub.20 arylalkenyl, linear or branched, optionally substituted by 1 to 10 halogen atoms, or a group SiR.sup.II.sub.3 ; each R.sup.I equal to or different from each other, is a group SiR.sup.II.sub.

Abstract: A method of preparing a compound or formulation having biocidal or preservative properties, or both comprises reacting an organic complexing agent, preferably a selected organic alcohol, with a borate or boric acid to produce a borate organic complex ion. The complex ion is preferably further reacted with a suitable cationic species. A compound or formulation so prepared is also claimed.

Abstract: The novel metallocenes of the formula I in which, preferably, M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R3 and R4 are hydrogen, R5 and R6 are alkyl or haloalkyl, —(CR8R9)m—R7—(CR8R9)n— is a single- or multi-membered chain in which R7 may also be a (substituted) hetero atom, and m+n is zero or 1, form, together with aluminoxanes as cocatalysts, a very effective catalyst system for the preparation of polyolefins of high molecular weight.

Abstract: Process for the preparation of an olefin polymer using metallocenes containing specifically substituted indenyl ligands A highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I in which, preferably M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R5 is hydrogen or alkyl, R3 and R4 are alkyl, where R3, R4 and R5 may be halogenated, —(CR7R8)m—R6—(CR7R8)n— is a single- or multi-membered chain in which R6 may also be a (substituted) heteroatom, and m+n is zero or 1.