Abstract: To provide an economical fuel cell electrode catalyst which can be used in place of platinum as a simple substance or a platinum alloy and has easy-to-control catalytic power, a molecular metal complex is used as a fuel cell electrode catalyst which molecular metal complex is a mononuclear or multinuclear coordination compound that has a particular structure, that is not a polymer compound, and that does not have a layered structure.

Abstract: To provide an economical fuel cell electrode catalyst which can be used in place of platinum as a simple substance or a platinum alloy and has easy-to-control catalytic power, a molecular metal complex is used as a fuel cell electrode catalyst which molecular metal complex is a mononuclear or multinuclear coordination compound that has a particular structure, that is not a polymer compound, and that does not have a layered structure.

Abstract: An object of the present invention is to provide a novel method for producing hydrogen peroxide by direct synthesis that is capable of taking the place of the conventional anthraquinone process, and to provide a catalyst used in the production method. The present invention is a metal complex represented by the following general formula (1), (2), (3) or (4).

Abstract: An object of the present invention is to provide a novel method for producing hydrogen peroxide by direct synthesis that is capable of taking the place of the conventional anthraquinone process, and to provide a catalyst used in the production method. The present invention is a metal complex represented by the following general formula (1), (2), (3) or (4).

Abstract: To provide an economical fuel cell electrode catalyst which can be used in place of platinum as a simple substance or a platinum alloy and has easy-to-control catalytic power, a molecular metal complex is used as a fuel cell electrode catalyst which molecular metal complex is a mononuclear or multinuclear coordination compound that has a particular structure, that is not a polymer compound, and that does not have a layered structure.

Abstract: An object of the present invention is to provide a method for synthesis of keto acids by hydration of an acetylene compound (acetylene-carboxylic acids) under mild conditions free from harmful mercury catalysts and a method for synthesis of amino acids from acetylene-carboxylic acids in a single container (one-pot or tandem synthesis). In one embodiment of the method according to the present invention for synthesis of keto acids, acetylene-carboxylic acids is hydrated in the presence of a metal salt represented by General Formula (1), where M1 represents an element in Group VIII, IX, or X of the periodic table, and X1, X2, or X3 ligand represents halogen, H2O, or a solvent molecule, and k represents a valence of a cation species, and Y represents an anion species, and L represents a valence of the anion species, and each of K and L independently represents 1 or 2, and k×m=L×n.

Abstract: A catalyst for the decomposition of formic acid including a dinuclear metal complex represented by a formula (1) below, a tautomer or stereoisomer thereof, or any of their salts, where M1 and M2 are transition metals; Ar is a ligand having aromaticity and may be unsubstituted or substituted; R1 to R27 are each independently a hydrogen atom, an alkyl group, or the like, or R15 and R16 may together form a —CH?CH—, where Hs in the —CH?CH— may be each independently replaced by an alkyl group or the like, and R23 and R24 may together form a —CH?CH—, where Hs in the —CH?CH— may be each independently replaced by an alkyl group or the like; L is an arbitrary ligand or is absent; and m is a positive integer, 0, or a negative integer.

Abstract: The present invention provides a catalyst for the decomposition of formic acid including a dinuclear metal complex represented by a formula (1) below, a tautomer or stereoisomer thereof, or any of their salts, where M1 and M2 are transition metals and may be the same or different; Ar is a ligand having aromaticity and may be unsubstituted or substituted by one or more substituents; R1 to R27 are each independently a hydrogen atom, an alkyl group, or the like, or R15 and R16 may together form a —CH?CH—, where Hs in the —CH?CH— may be each independently replaced by an alkyl group or the like, and R23 and R24 may together form a —CH?CH—, where Hs in the —CH?CH— may be each independently replaced by an alkyl group or the like; L is an arbitrary ligand or is absent; and m is a positive integer, 0, or a negative integer.

Abstract: An object of the present invention is to provide a method for synthesis of keto acids by hydration of an acetylene compound (acetylene-carboxylic acids) under mild conditions free from harmful mercury catalysts and a method for synthesis of amino acids from acetylene-carboxylic acids in a single container (one-pot or tandem synthesis). In one embodiment of the method according to the present invention for synthesis of keto acids, acetylene-carboxylic acids is hydrated in the presence of a metal salt represented by General Formula (1), where M1 represents an element in Group VIII, IX, or X of the periodic table, and X1, X2, or X3 ligand represents halogen, H2O, or a solvent molecule, and k represents a valence of a cation species, and Y represents an anion species, and L represents a valence of the anion species, and each of K and L independently represents 1 or 2, and k×m=L×n.

Abstract: A photoacid generator comprising a metal hydride complex represented by the formula (I): wherein X represents a metal atom. The iridium hydride complex of the present invention can be used as an acid generator for chemically-amplified photoresists or color filters for liquid crystal, and in addition, can be widely applied in photographic-related or printing-related fields, or the like.

Abstract: Carbon dioxide and water are mixed with an organometallic complex represented by general formula (1) below where R1, R2, R3, R4, R5, and R6 independently represent a hydrogen atom or a lower alkyl group, M represents an element that can be coordinated to the benzene ring, X1 and X2 represent nitrogen-containing ligands, X3 represents a hydrogen atom, a carboxylic acid residue, or H2O, X1 and X2 may be bonded to each other, Y represents an anion species, K represents a valency of a cation species, L represents a valency of an anion species, K and L independently represent 1 or 2, and K, m, L, and n are related to one another by K×m=L×n. This makes it possible to directly reduce carbon dioxide in water.

Abstract: An ionization chamber of an analytical apparatus (10) in which high concentration test sample ions are evaporated is provided with an ion introduction control means (8) to control the quantity of the test sample ions introduced to an ion attracting electrode (9). Therefore, an analytical apparatus can be provided that is capable of substantially simultaneous mass spectrometry and absorption, emission, and scattering spectroscopy. The apparatus also includes: a low temperature bath (106) which cools the test sample solution before it is introduced to the sprayer (104); and a cooling gas introduction tube (108), constructed separately from the sprayer, which cools the sprayer and the test sample solution introduced to the sprayer (104). The inclusion enables effective restriction of test sample heating upon high voltage application.

Abstract: A photoacid generator comprising a metal hydride complex represented by the formula (I): wherein X represents a metal atom. The iridium hydride complex of the present invention can be used as an acid generator for chemically-amplified photoresists or color filters for liquid crystal, and in addition, can be widely applied in photographic-related or printing-related fields, or the like.

Abstract: Carbon dioxide and water are mixed with an organometallic complex represented by general formula (1) below where R1, R2, R3, R4, R5, and R6 independently represent a hydrogen atom or a lower alkyl group, M represents an element that can be coordinated to the benzene ring, X1 and X2 represent nitrogen-containing ligands, X3 represents a hydrogen atom, a carboxylic acid residue, or H2O, X1 and X2 may be bonded to each other, Y represents an anion species, K represents a valency of a cation species, L represents a valency of an anion species, K and L independently represent 1 or 2, and K, m, L, and n are related to one another by K×m=L×n. This makes it possible to directly reduce carbon dioxide in water.