Abstract: The invention relates to an improved process for inexpensive and environmentally benign preparation of trialkylgallium compounds of the general formula: R3Ga in high yield and selectivity, where R is alkyl of 1 to 4 carbon atoms. Trialkylgallium is prepared according to the invention via the intermediate stage alkylgallium dichloride (RGaCl2) or dialkylgallium chloride/alkylgallium dichloride mixture (R2GaCl/RGaCl2). The RGaCl2 obtained or the R2GaCl/RGaCl2 mixture also forms part of the subject-matter of the present invention. The novel process of the present invention is notable for improved process management. The process intentionally makes substantial use of inexpensive starting materials and reagents of low environmental impact and so is also useful for the industrial scale.

Abstract: The invention relates to a method for the cost-effective and environmentally friendly production of dialkyl indium chloride in high yield and with high selectivity and purity. The dialkyl indium chloride produced according to the invention is particularly suitable, also as a result of the high purity and yield, for the production, on demand, of indium-containing precursors in high yield and with high selectivity and purity. As a result of the high purity, the indium-containing precursors that can be produced are particularly suitable for metal organic chemical vapor deposition (MOCVD) or metal organic vapor phase epitaxy (MOVPE). The novel method according to the invention is characterized by the improved execution of the method, in particular a rapid process control. Owing to targeted and extensive use of raw materials that are cost-effective and have a low environmental impact, the method is also suitable for use on an industrial scale.

Abstract: The invention relates to a method for the cost-effective and environmentally friendly production of dialkyl indium chloride in high yield and with high selectivity and purity. The dialkyl indium chloride produced according to the invention is particularly suitable, also as a result of the high purity and yield, for the production, on demand, of indium-containing precursors in high yield and with high selectivity and purity. As a result of the high purity, the indium-containing precursors that can be produced are particularly suitable for metal organic chemical vapour deposition (MOCVD) or metal organic vapour phase epitaxy (MOVPE). The novel method according to the invention is characterised by the improved execution of the method, in particular a rapid process control. Owing to targeted and extensive use of raw materials that are cost-effective and have a low environmental impact, the method is also suitable for use on an industrial scale.

Abstract: The invention relates to a method for the cost-effective and environmentally friendly production of alkyl indium sesquichloride in high yield and with high selectivity and purity. The alkyl indium sesquichloride produced according to the invention is particularly suitable, also as a result of the high purity and yield, for the production, on demand, of indium-containing precursors in high yield and with high selectivity and purity. As a result of the high purity, the indium-containing precursors that can be produced are particularly suitable for metal organic chemical vapour deposition (MOCVD) or metal organic vapour phase epitaxy (MOVPE). The novel method according to the invention is characterised by the improved execution of the method, in particular a rapid process control. Owing to targeted and extensive use of raw materials that are cost-effective and have a low environmental impact, the method is also suitable for use on an industrial scale.

Abstract: The invention relates to new metal complexes having N-aminoamidinate ligands, more particularly metal complexes having N,N?-bis(dimethylamino)acetamidinate, N,N?-bis(dimethylamino)formamidinate, N-dimethylaminoacetamidinate or N-dimethylamino-N?-isopropyl-acetamidinate ligands as well as to their preparation and use. The metal complexes are characterized by a five-membered chelate ring. The metal complexes are formed with the metals from the main groups of the PTE, but also with transition-group elements such as tantalum (Ta), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu) or zinc (Zn), and also with precious metals such as palladium (Pd). The complexes of the invention find use as precursors for the preparation of functional layers by means of gas-phase thin-film processes such as CVD, MO-CVD and ALD. Additionally they may be used as catalysts for olefin hydroamination and for olefin polymerization.

Abstract: Urethanes are prepared by oxidative carbonylation of at least one amino compound in the presence of carbon monoxide, oxygen and organic, at least one hydroxyl-group-carrying compound. The carbonylation is carried out in the absence of halogen-containing promoters. The carbonylation is also carried out in the presence of a metal complex catalyst which contains neutral bidentate N-chelate ligands of the (N˜N) type, two monoanionic N,O-chelate ligands of the general type (N˜O)? or tetradentate dianionic chelate ligands (O˜N˜N˜O)2?.

Abstract: The invention relates to ?5:?1-cyclopentadienylidene-phosphorane constrained geometry complexes of rare earth metals, abbreviated to ?5:?1-CpPC-CGC, method for production and use of same.

Abstract: The invention relates to a method for producing urethanes or ureas or mixtures of urethanes and ureas by oxidative carbonylation of organic amines in the presence of carbon monoxide, oxygen and a catalyst, where the catalyst used is a transition metal complex containing the structural feature: [Mn+(O˜N˜O)2?](n?2)+(L)m(Z?)n?2 and the method is carried out under halogen-free reaction conditions. The invention further relates to transition metal complexes containing said structural feature and also to the use of such transition metal complexes as catalysts in the production of urethanes or ureas or mixtures of urethanes and ureas.

Abstract: The invention relates to chelate-stabilized homleptic triaryl compounds based on phenylphosphoranes, to methods for preparing same and to the use thereof as catalysts. According to the invention, the object is achieved by homleptic rare earth triaryl complexes of the general formula (I), where SE=Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu; X?O, CRR?; R1, R2=phenyl; R, R?=mutually independently H, alkyl with n=10 C atoms, phenyl or trimethylsilyl.

Abstract: The present invention relates to a method for producing linear and/or cyclic carbonate esters, involving the step of reacting an epoxide with carbon dioxide in the presence of a catalyser. The invention further relates to the use of special catalysers for reacting epoxides with carbon dioxide, special catalysers and special reaction products. The catalyser comprises a complex of a metal M or M-A with a ligand L, the metal M being present in an oxidation state of >=0, A standing for halide, carboxylate, phenolate, sulfonate, phosphonate, alkyl, alkoxy or amido, and the ligand L having the subsequent structure (Ia) or (Ib), wherein one or both of the OH groups shown in (Ia) and/or (Ib) can also be deprotonated.

Abstract: The invention relates to ?5:?1-cyclopentadienylidene-phosphorane constrained geometry complexes of rare earth metals, abbreviated to ?5:?1-CpPC-CGC, method for production and use of same.

Abstract: The invention relates to chelate-stabilized homleptic triaryl compounds based on phenylphosphoranes, to methods for preparing same and to the use thereof as catalysts. According to the invention, the object is achieved by homleptic rare earth triaryl complexes of the general formula (I), where SE=Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu; X=O, CRR?; R1, R2=phenyl; R, R?=mutually independently H, alkyl with n=10 C atoms, phenyl or trimethylsilyl.

Abstract: Monosubstituted oxalic acid derivatives of the general formula (I) [A]+[O—C(O)—C(O)—O—X???(I) Wherein the meaning is for [A]+ a cation made from an organic moiety A having a formally positively charged heteroatom selected from the group consisting of nitrogen, phosphorus and sulfur X is a C1 to C30 organic residue and wherein the following compounds (I) are disclaimed: Tetramethylammonium monomethyloxalate Methyltri(alkyl)ammonium monomethyloxalate Trimethyl(1-hydroxyethyl)ammonium monomethyloxalate Methyltriethylammonium monomethyloxalate Tetraethylammonium monomethyloxalate n-Propyltriethylammonium mono-n-propyloxalate n-Butyltriethylammonium mono-n-butyloxalate Benzyltriethylammonium monobenzyloxalate cyclohexyldimethylammonium monomethyloxalate Dimethyl-phenylammonium monomethyloxalate.

Abstract: The invention relates to new metal complexes having N-aminoamidinate ligands, more particularly metal complexes having N,N?-bis(dimethylamino)acetamidinate, N,N?-bis(dimethylamino)formamidinate, N-dimethylaminoacetamidinate or N-dimethylamino-N?-isopropyl-acetamidinate ligands as well as to their preparation and use. The metal complexes are characterized by a five-membered chelate ring. The metal complexes are formed with the metals from the main groups of the PTE, but also with transition-group elements such as tantalum (Ta), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu) or zinc (Zn), and also with precious metals such as palladium (Pd). The complexes of the invention find use as precursors for the preparation of functional layers by means of gas-phase thin-film processes such as CVD, MO-CVD and ALD. Additionally they may be used as catalysts for olefin hydroamination and for olefin polymerization.

Abstract: The invention relates to a method for producing urethanes or ureas or mixtures of urethanes and ureas by oxidative carbonylation of organic amines in the presence of carbon monoxide, oxygen and a catalyst, where the catalyst used is a transition metal complex containing the structural feature: [Mn+(O˜N˜O)2?](n-2)+(L)m(Z?)n-2 and the method is carried out under halogen-free reaction conditions. The invention further relates to transition metal complexes containing said structural feature and also to the use of such transition metal complexes as catalysts in the production of urethanes or ureas or mixtures of urethanes and ureas.

Abstract: Tris(heterocyclyl)-metal complexes and the use thereof as bleach catalysts are described.

Abstract: Bis(hydroxyquinoline)-metal complexes and the use thereof as bleach catalysts are described.

Abstract: Biheteroaryl metal complexes and the use thereof as bleach catalysts are described.

Abstract: The aim of the invention is to improve the cleaning power of detergents and cleaning agents, especially with regard to bleachable stains, while avoiding any damage to the textile treated with said detergents and cleaning agents. For this purpose, a bleach catalyst in the form of a complex of Fe—, Mo—, Mn— and/or W with a ligand having a skeleton of formula (I) is used.

Abstract: A bleach catalyst includes a complex of Fe—, Mo—, Mn— and/or W with a ligand having a skeleton of formula (I).