Abstract: A metal coordination compound having a basic structure represented by formula: MLmL′n (1), wherein M is a metal atom of Ir, Pt, Rh or Pd; L and L′ are mutually different bidentate ligands; m is 1, 2 or 3; wherein at least one bidentate ligand has a partial structure formed by condensation via an alkylene group having 2-10 carbon atoms, is provided. In an electroluminescence device composed of one or a plurality of organic films disposed between a cathode and an anode, at least one layer is a luminescence layer which is formed by incorporating luminescence molecules constituting the metal coordination compound having a structure of the formula (1) described above as a guest material in a host material thereby to provide an electroluminescence device producing luminescence at high efficiency and stably keeping a high luminance for a long period.
Abstract: In a process for the hydroformylation of ethylenically unsaturated compounds, at least one complex of a metal of transition group VIII. with at least one phosphorus-, arsenic- or antimony-containing compound as ligand is used as hydroformylation catalyst, where the compound used as ligand in each case comprises two groups which comprise a P, As or Sb atom and at least two further hetero atoms and are bound to a xanthene-like molecular framework. New compounds of this type and catalysts which comprise at least one complex of a metal of transition group VIII. with at least one such compound as ligand are also provided.
Type:
Application
Filed:
March 11, 2003
Publication date:
October 16, 2003
Inventors:
Wolfgang Ahlers, Dag Wiebelhaus, Rocco Paciello, Michael Bartsch, Robert Baumann, Dieter Vogt, Alison Hewat
Abstract: Complexes of a selected class of chiral ligands with molybdenum, tungsten or chromium, preferably molybdenum, are effective as catalysts in highly enantioselective and regioselective alkylation of allylic substrates.
Abstract: The invention provides supramolecular metal complexes as DNA cleaving agents. In the complexes, charge is transferred from one light absorbing metal (e.g. Ru or Os) to an electron accepting metal (e.g. Rh) via a bridging &pgr;-acceptor ligand. A bioactive metal-to-metal charge transfer state capable of cleaving DNA is thus generated. The complexes function when irradiated with low energy visible light with or without molecular oxygen.
Abstract: Complexes of organic ligands with a metal ion exhibit unique conformation and spectroscopic properties upon changes in oxidation state of the metal ion. The metal is a redox-active metal ion and may possess additional ligands bonded to it. The organic ligand has three “arms” that are linked together at a central atom; each arm contains atoms that may also coordinate to the metal ion. At least two of the arms possess chromophoric properties. At least one arm contains two different groups that may coordinate to the metal ion. In one oxidation state, a first atom binds to the metal. In a second oxidation state, a second atom binds to the metal. This change in coordination of the metal ion results in a rotation of one of the arms, which changes the orientation of another group, which inverses the orientation of the two chromophoric species with respect to one another.
Abstract: A method for the preparation of aryl methyl ketones converts a variety of ethyl arenas to the corresponding aryl methyl ketones using a dioxygen-containing gas as the oxidant. The catalyst used for the reaction is a metal complex bearing general formulas as disclosed.
Type:
Application
Filed:
January 25, 2002
Publication date:
July 31, 2003
Applicant:
The Hong Kong Polytechnic University
Inventors:
Albert Sun-Chi Chan, Jian-Ying Qi, Cheng-Chao Pai, Xian-Jun Li, Li-Sheng Deng, Wen-Zao Li, Bin Sun, Jia-Yuan Hu
Abstract: The invention relates to chemical products which are suited for use as co-catalysts and which can be obtained by reacting a compound of formula (I), M1R1R2(R3)m with a compound of formula (II), (R4X)q-(G)*(M2R5R6)g. In formula (I), R1, R2 and R3 are the same or different and represent a hydrogen atom, C1-C20 alkyl, C1-C20 alkyl halide, C6-C20 aryl, C6-C20 aryl halide, C7-C40 arylalkyl, C7-C40 arylalkyl halide, C7-C40 alkylaryl or C7-C40 alkylaryl halide; M1 represents an element of the second or third main group of the periodic table of elements, and; m equals 0 or 1, whereby m is equal to 1 when M1 represents an element of the third main group, and m is equal to 0 when M1 represents an element of the second main group.
Abstract: The invention relates to novel transition metal complexes containing at least one diaminocarbene ligand, to processes for preparing these transition metal complexes and to their use as catalysts in organic reactions.
Abstract: Pro-drug forms of linear polyamine-bridged platinum compounds and methods for their production and use are provided. The polyamine-bridge portion of the compounds is based on spermine or spermidine, and the central amines of the polyamine-bridge are chemically bonded to labile blocking groups. The presence of the blocking groups serves to minimize the toxicity of the Pt compounds upon administration. Selective removal of the blocking groups and release of the active, unblocked species occurs upon exposure to suitable environmental conditions.
Type:
Application
Filed:
August 22, 2002
Publication date:
June 19, 2003
Inventors:
Nicholas Farrell, Alexander Hegmans, John D. Roberts
Abstract: The invention relates to a process for synthesizing an ionic metal complex represented by the general formula (1) or (5). This process includes reacting in an organic solvent a compound (corresponding to ligand of the complex) represented by the general formula (2) or (6) with a halogen-containing compound represented by the general formula (3) or (4), in the presence of a reaction aid containing an element selected from the group consisting of elements of groups 1-4 and 11-14 of the periodic table. It is possible by this process to easily and efficiently synthesize the ionic metal complex, which can be used as a supporting electrolyte for electrochemical devices, a polymerization catalyst of polyolefins and so forth, or a catalyst for organic synthesis.
Abstract: Nitrogen containing analogs of Copper II &bgr;-diketonates which analogs are more stable source reagents for copper deposition when substantially free of solvents of excess ligands. The nitrogen containing analogs replace -O- with —N(R″)—wherein R″ is an alkyl group having from one to four carbon atoms. Replacement of each -O- is preferred although replacement of one -O- per cyclic ring is sufficient to improve stability of the copper source reagents. The source reagent can be purified by sublimation to remove solvents and excess ligands prior to semiconductor processing.
Abstract: A method for producing biphenyl and its derivative comprising oxidatively coupling a benzene aromatic compound in the presence of a catalyst comprising a palladium salt, a copper salt, and a bidentate ligand compound capable of forming a complex with the palladium salt via the nitrogen atom and the oxygen atom in the molecule thereof in an atmosphere containing molecular oxygen. In particular, an improved method for selectively producing an asymmetrically substituted biphenyl derivative, such as a 2,3,3′,4′-biphenyltetracarboxylic acid tetraester, which comprises oxidatively coupling a substituted aromatic compound, such as a phthalic diester, in the presence of the catalyst in an atmosphere containing molecular oxygen without replenishing with a ligand.
Type:
Application
Filed:
October 2, 2002
Publication date:
May 8, 2003
Inventors:
Yasushi Yamamoto, Tetsuro Tsuji, Jun Haruta
Abstract: To provide a novel reaction product useful as an organic photoconductive material for electrophotographic photoconductors.
A product obtainable by reacting (i) a nitrile derivative, (ii) a phthalonitrile derivative or a 1,3-diiminoisoindoline derivative and, if necessary, (iii) a metal or a metal-containing compound.
Abstract: Compounds of the formula I
[LnMmXp]ZYq (1)
are claimed, where L is a ligand of the formula II
and the individual symbols have the meanings defined in the description. The metal complexes are suitable as bleaching catalysts in detergents, cleaners and disinfectants which comprise peroxy compounds.
Type:
Grant
Filed:
September 8, 2000
Date of Patent:
April 8, 2003
Assignee:
Clariant GmbH
Inventors:
Michael Seebach, Gerd Reinhardt, Thomas Schönherr, Edwin Weber
Abstract: A method of selectively controlling undesirable vegetation in crops by using a postemergent application of an herbicidally effective amount of a metal chelate of a 2-(substituted benzoyl)-1,3-cyclohexanedione compound to the locus of such undesirable vegetation.
Abstract: Disclosed is a new catalyst composition comprising a bimetallic Co—Ru catalyst complexed with a N-heterocylcic ligand that is effective, economical, and provides improvements in oxidative stability in the one step synthesis of 1,3-propanediol (1,3-PDO) from ethylene oxide and synthesis gas. For example, cobalt-ruthenium-2,2′-bipyrimidine, 2,2′-dipyridyl, or 2,4,6-tripridyl-s-triazine catalyst precursors in cyclic ether solvents, such as 1,3-dioxolane, 1,4-dioxolane, 1,4-dioxane, and 2-ethyl-2-methyl-1,3-dioxolane, provide good yields of 1,3-PDO in a one step synthesis.
Type:
Application
Filed:
May 15, 2002
Publication date:
March 27, 2003
Inventors:
John Frederick Knifton, Talmadge Gail James, Kevin Dale Allen, Paul Richard Weider, Joseph Broun Powell, Lynn Henry Slaugh, Timothy Williams
Abstract: An organic EL device includes a luminescence layer containing, as a luminescent material allowing a high-luminescence and high-efficiency luminescence for a long period of time, a metal coordination compound represented by the following formula (1): LmML′n, wherein M denotes Ir, Pt, Ph or Pd; L denotes a bidentate ligand; L′ denotes a bidentate ligand different from L; m is an integer of 1, 2 or 3; and n is an integer of 0, 1 or 2 with the proviso that the sum of m and n is 2 or 3.
Abstract: Described in the present invention are a highly sensitive method for electrochemically detecting a DNA using a novel mixed intercalator and a detection kit useful for practicing said method.
Type:
Application
Filed:
August 10, 2001
Publication date:
February 27, 2003
Inventors:
Youngmi Kim Pak, James Jungho Pak, Sanghee Kim, Hong-Kyu Lee
Abstract: Organometallic compounds useful for forming aluminum films by chemical vapor deposition are disclosed. Also disclosed are methods of preparing the organometallic compounds and methods of forming aluminum films.
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.
Type:
Grant
Filed:
April 10, 2001
Date of Patent:
December 31, 2002
Assignee:
Dow Global Technologies Inc.
Inventors:
Richard E. Campbell, Jr., Kevin A. Frazier, David D. Devore, Paul C. Vosejpka
Abstract: Emissive phosphorescent organometallic compounds are described that produce improved electroluminescence, particularly in the blue region of the visible spectrum. Organic light emitting devices employing such emissive phosphorescent organometallic compounds are also described. Also described is an organic light emitting layer including a host material having a lowest triplet excited state having a decay rate of less than about 1 per second; a guest material dispersed in the host material, the guest material having a lowest triplet excited state having a radiative decay rate of greater than about 1×105 or about 1×106 per second and wherein the energy level of the lowest triplet excited state of the host material is lower than the energy level of the lowest triplet excited state of the guest material.
Type:
Application
Filed:
October 16, 2001
Publication date:
December 5, 2002
Applicant:
TRUSTEE OF PRINCETON UNIVERSITY
Inventors:
Sergey Lamansky, Mark E. Thompson, Vadim Adamovich, Peter I. Djurovich, Chihaya Adachi, Marc A. Baldo, Stephen R. Forrest, Raymond Kwong
Abstract: The present invention provides metal-containing purines, pyrimidines, nucleosides, nucleotides and oligonucleotides; including phosphoramidite and photolabile derivatives thereof, including methods of making and method of using same. The present invention provides a method for detection of nucleic acid sequences via electrochemical or photochemical means.
Type:
Application
Filed:
August 30, 2001
Publication date:
November 28, 2002
Applicant:
Duke University
Inventors:
Mark W. Grinstaff, Amy E. Beilstein, Shoeb I. Khan
Abstract: The invention relates to novel platinum-based compounds for labeling biomolecules. Platinum based labeling compounds according to the invention irreversibly attach to a target biomolecule via coordination of a platinum (II) metal center with N or S atoms on the target biomolecule. The invention relates to the novel compounds themselves, methods of making the platinum-based labeling compounds, probes labeled with such compounds, methods of making such labeled probes, and kits comprising the novel platinum-based labeling compounds and/or probes labeled with them. The invention also relates to methods of using probes labeled with platinum-based labeling compounds of the invention, particularly array and microarray hybridization methods.
Abstract: A reaction product useful as an organic photoconductive material for electrophotographic photoconductors is provided, obtainable by reacting (i) a nitrile derivative, (ii) a phthalonitrile derivative or a 1,3-diiminoisoindoline derivative and, if necessary, (iii) a metal or a metal-containing compound.
Abstract: The invention is based on the discovery that a new class of molecular rectangles can be prepared by using a stepwise synthesis plan under mild temperature conditions. The new rectangles are neutral and exhibit luminescence in solution at room temperature.
Abstract: Ionophores having the capacity spontaneously assemble in solution and composed of hydrogen bonded monomers of 5′-(t-butyl-dimethylsilyl)-2′,3′-O-isopropylidene-isoguanosine, 5′-(t-butyl-dimethylsilyl)-2′,3′-O-isopropylidene-thio-isoguanosine or 2′,3′-Di-O-acetyl-5′-(t-butyl-dimethylsilyl)-isoguanosine are used to remove 137-cesium ions (137Cs+) from nuclear waste.
Type:
Grant
Filed:
November 24, 1999
Date of Patent:
September 10, 2002
Assignee:
The University of Maryland at College Park
Inventors:
Jeffrey T. Davis, Sampath K. Tirumala, Allison L. Marlow
Abstract: A binuclear DNA-threading transition metal complex with the general formula: (L1)-M1-(D1-B-D2)-M2-(L2) wherein D1-B-D2 is a bridging ligand; D1 is a polycyclic heteroaromatic ligand in which aza nitrogens can form a bidentate or tridentate chelate with Ml; D2 is any bi- or oligodentate ligand co-ordinated to the transition metal M2; B is any appropriately substituted chain of at least two atoms; M1 is a transition metal ion with octahedral co-ordination sphere; M2 is any transition metal ion; L1 comprises a set of 1-3 ancillary ligands that saturate the remaining co-ordination sphere of M1; and L2 comprises a set of 1-4 ancillary ligands that saturate the remaining co-ordination sphere of M2. An example of the complex according to the invention is shown in the FIG. 1. The complex according to the invention is useful for treatment of different diseases, such as cancer and infections.
Abstract: A process for the manufacture of zinc hexasulfide amine complexes comprising reacting zinc, sulfur and a molar excess of amine at an elevated temperature to obtain a reaction mixture comprising zinc hexasulfide amine complexes and excess amine. A first solvent in which the zinc hexasulfide amine complexes are largely not soluble is added to obtain a slurry of the reaction mixture. The zinc hexasulfide amine complexes may be recovered in a subsequent separation process.
Type:
Grant
Filed:
June 28, 2000
Date of Patent:
July 16, 2002
Assignee:
Flexsys America L.P.
Inventors:
Jayant S. Lodaya, Otto W. Maender, Paul M. Mitchem
Abstract: Amyloid binding compounds which are derivatives of Chrysamine G, pharmaceutical compositions containing, and methods using such compounds to identify Alzheimer's brain in vivo and to diagnose other pathological conditions characterized by amyloidosis, such as Down's Syndrome are described. Pharmaceutical compositions containing Chrysamine G and derivatives thereof and methods using such compositions to prevent cell degeneration and amyloid-induced toxicity in amyloidosis associated conditions are also described. Methods using Chrysamine G derivatives to stain or detect amyloid deposits in biopsy or post-mortem tissue are also described. Methods using Chrysamine G derivatives to quantify amyloid deposits in homogenates of biopsy and post-mortem tissue are also described.
Type:
Grant
Filed:
November 6, 1997
Date of Patent:
July 9, 2002
Assignee:
University of Pittsburgh
Inventors:
William E. Klunk, Jay W. Pettegrew, Chester A. Mathis, Jr.
Abstract: Organometallic compounds useful for forming aluminum films by chemical vapor deposition are disclosed. Also disclosed are methods of preparing the organimetallic compounds and methods of forming aluminum films.
Abstract: Organometallic precursor compounds useful for forming aluminum films by chemical vapor deposition are disclosed. Also disclosed are methods of preparing the organometallic precursor compounds and methods of forming aluminum films.
Abstract: An S,S-ethylenediamine-N,N′-disuccinic acid iron alkali salt which contains a lactam compound represented by the following general formula (1): 1
Abstract: The present application describes novel substituted aryl hydroxamic acids of formula I:
or pharmaceutically acceptable salt forms thereof, wherein ring A is a 5-8 membered ring containing from 0-1 additional heteroatoms selected from N, O, and S, which are useful as metalloprotease inhibitors.
Type:
Grant
Filed:
May 13, 1999
Date of Patent:
April 2, 2002
Inventors:
Matthew E. Voss, Carl P. Decicco, Ruth R. Wexler
Abstract: The invention provides a method for enhancing the water solubility of cytotoxic trans-platinum complexes. The present invention also provides a method for killing tumor cells, and a method for the treatment of tumors by the administration of a cytotoxic platinum coordination complex of the general formula SP4-2-[PtX(L)(L′)(B)]+.
Abstract: The present invention relates to a process for carbonylation of epoxide derivatives, in which the reactivity, selectivity and the yield are superior. More specifically, the present invention relates to a process for hydroformylation of an epoxide derivative in which there is utilized a transition metal catalyst having a cyclopentadienyl radical, thereby improving the reactivity and selectivity. Further, the present invention relates to a process for hydroesterification of an epoxide derivative, in which a proper catalyst is selected, and the reaction temperature and pressure are adjusted within proper ranges under the presence of a cobalt catalyst, thereby improving the product selectivity and the yield.
Abstract: The present invention relates to tetra- and penta-nuclear platinum complexes with antitumor activity, to a method for preparing them and to pharmaceutical compositions containing them.
Type:
Grant
Filed:
April 27, 2000
Date of Patent:
November 6, 2001
Assignee:
Setanta Therapeutics, Inc.
Inventors:
Giovanni Da Re, Roberto Di Domenico, Silvano Spinelli, Nicholas Farrell
Abstract: The invention provides a probe for detecting a highly ordered structural site of a nucleic acid of a gene by specifically binding with the structural site to generate an electrochemical response. The inventive probe comprises a cyclic ligand containing ferrocenyl group and a DNA threading intercalating moiety, such as 1, 4, 5, 8-tetrasubstituted naphthalene, 9, 10-disubstituted anthracene, and 1, 5-disubstituted anthraquinone. Current of the cyclic ligand is not observed due to interaction such as stacking or so called charge transfer between ferrocenyl group and the DNA threading intercalating moiety in conventional electrolyte. The binding of the ligand with a highly ordered structural site of a single stranded nucleic acid, where nucleic base inserts between the cavity of cyclic ligand, inhibits the intramolecular interaction of the ligand to convert the ligand into its electrically active form, and as a result, current is observed.
Abstract: A ruthenium (II) complex having a dipyridophenazine or tetrapyridophenazine ligand and being represented by the formula (1) or (2) shown in the specification. Upon absorption of light, the complex emits fluorescence for a longer life time in a protic solvent as compared with known analogous compounds.
Type:
Grant
Filed:
March 27, 2000
Date of Patent:
September 11, 2001
Assignee:
Secretary of Agency of Industrial Science and
Technology
Abstract: A platinum complex represented by the formula PtL1/L2 or PtLX1/LX2 wherein L1 and L each represent a ligand selected from the group consisting of 2,2′-bipyridine compounds having at least one anionic group and 1,10-phenanthroline compounds having at least one anionic group, L2 represents a dithiolate selected from those represented by the formulas (a) through (d) shown in the specification, and X1 and X2 each represent a thiolate selected from those represented by the following formulas (e) and (f) shown in the specification. A dye-sensitized electrode includes a substrate having an electrically conductive surface, an oxide semiconductor film formed on the conductive surface, and the above platinum complex supported on the film. A solar cell includes the above electrode, a counter electrode, and an electrolyte disposed therebetween.
Type:
Grant
Filed:
March 27, 2000
Date of Patent:
August 14, 2001
Assignee:
Agency of Industrial Science and Technology
Abstract: Organic complexes of vanadium are provided, having the general structure VL3, where V is vanadium(III) and L is a monoprotic bidentate ligand that forms a five-membered, unsaturated vanadium containing ring, having vanadium coordinating oxygen or sulfur ring heteroatoms, and where the vanadium containing ring is fused to a six-membered heterocyclic ring. Preferably L is a hydroxypyrone or a hydroxypyridinone. The complexes have a number of uses, including the treatment of elevated blood glucose and related disorders, treatment of proliferative disorders, etc.
Type:
Grant
Filed:
October 25, 1999
Date of Patent:
July 31, 2001
Assignee:
The University of British Columbia
Inventors:
Chris Orvig, John H. McNeill, Marco Melchior
Abstract: The invention is directed towards a metal complex having the formula LMX1X2. L is a bidentate nitrogen-containing ligand with more than 2 nitrogens. M is copper, silver, or gold. X1 and X2 are independently selected from the group consisting of halogens, hydride, triflate, acetate, trifluoroacetate, perfluorotetraphenylborate, tetrafluoroborate, C1 through C12 alkyl, C1 through C12 alkoxy, C3 through C12 cycloalkyl, C3 through C12 cycloalkoxy, aryl, and any other moiety into which a monomer can insert. Such metal complexes have a tetrahedral or pseudo-tetrahedral structure.
Abstract: Novel aminomethylphosphine ligands have particular substituents on the central carbon atom. Such ligands form coordination complexes that may be catalysts for the polymerization of monomers or other catalytic induced reactions.
Type:
Grant
Filed:
December 14, 1999
Date of Patent:
January 23, 2001
Assignee:
Symyx Technologies, Inc.
Inventors:
Anne Marie LaPointe, Anil Guram, Timothy S. Powers, Bernd Jandeleit, Thomas Boussie, Cheryl Lund
Abstract: Amyloid binding compounds which are non-azo derivatives of Chrysamine G, pharmaceutical compositions containing, and methods using such compounds to identify Alzheimer's brain in vivo and to diagnose other pathological conditions characterized by amyloidosis, such as Down's Syndrome are described. Pharmaceutical compositions containing non-azo derivatives of Chrysamine G and methods using such compositions to prevent cell degeneration and amyloid-induced toxicity in amyloidosis associated conditions are also described. Methods using non-azo Chrysamine G derivatives to stain or detect amyloid deposits in biopsy or post-mortem tissue are also described. Methods using non-azo Chrysamine G derivatives to quantify amyloid deposits in homogenates of biopsy and post-mortem tissue are also described.
Type:
Grant
Filed:
April 18, 1997
Date of Patent:
January 2, 2001
Assignee:
University of Pittsburgh
Inventors:
William E. Klunk, Jay W. Pettegrew, Chester A. Mathis, Jr.
Abstract: Organometallic compounds useful for forming aluminum films by chemical vapor deposition are disclosed. Also disclosed are methods of preparing the organimetallic compounds and methods of forming aluminum films.
Abstract: The present invention is directed to cyclic amines of the formula I: ##STR1## (wherein R.sup.1, R.sup.2, R.sup.3, m and n are defined herein) which are useful as modulators of chemokine receptor activity. In particular, these compounds are useful as modulators of the chemokine receptors CCR-1, CCR-2, CCR-2A, CCR-2B, CCR-3, CCR-4, CCR-5, CXCR-3, and/or CXCR-4.
Type:
Grant
Filed:
July 21, 1998
Date of Patent:
October 24, 2000
Assignee:
Merck & Co., Inc.
Inventors:
Charles G. Caldwell, Paul E. Finke, Malcolm Maccoss, Laura C. Meurer, Sander G. Mills, Bryan Oates