The Experts below are selected from a list of 621 Experts worldwide ranked by ideXlab platform
Isabel Sobrados - One of the best experts on this subject based on the ideXlab platform.
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synthesis and characterisation of zinc Cadmium and mercury complexes of benzilbisthiosemicarbazone structure of Cadmium Derivative
Inorganica Chimica Acta, 2001Co-Authors: Elena Lopeztorres, Ma Antonia Mendiola, Jesus Rodriguezprocopio, Ma Teresa Sevilla, Enrique Colacio, Jose Ma Moreno, Isabel SobradosAbstract:Abstract Complexes [MLH6(NO3)2] (M=Cd, Hg) (1 and 2), [MLH4] (M=Hg, Zn) (3 and 5) and [ZnLH5NO3] (4) have been synthesised by reaction of benzilbisthiosemicarbazone LH6 with Cadmium, mercury and zinc nitrates in ethanol. The X-ray diffraction study of Cadmium complex 1 shows that the azomethine nitrogen atoms, the sulfur atoms and the nitrate groups are bonded to the Cadmium atom giving, the first time for this kind of ligands, a distorted octahedral geometry. Complexes have been characterised by elemental analyses and mass spectra as well as by IR, 1H, 13C and 113Cd NMR and 13C and 113Cd CP/MAS NMR spectroscopies. In all complexes LH6 acts as a tetradentate N2S2 ligand. The electrochemical behaviour of complexes, studied by cyclic voltammetry, shows metal centred and ligand reduction processes for all of them.
Elena Lopeztorres - One of the best experts on this subject based on the ideXlab platform.
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synthesis and characterisation of zinc Cadmium and mercury complexes of benzilbisthiosemicarbazone structure of Cadmium Derivative
Inorganica Chimica Acta, 2001Co-Authors: Elena Lopeztorres, Ma Antonia Mendiola, Jesus Rodriguezprocopio, Ma Teresa Sevilla, Enrique Colacio, Jose Ma Moreno, Isabel SobradosAbstract:Abstract Complexes [MLH6(NO3)2] (M=Cd, Hg) (1 and 2), [MLH4] (M=Hg, Zn) (3 and 5) and [ZnLH5NO3] (4) have been synthesised by reaction of benzilbisthiosemicarbazone LH6 with Cadmium, mercury and zinc nitrates in ethanol. The X-ray diffraction study of Cadmium complex 1 shows that the azomethine nitrogen atoms, the sulfur atoms and the nitrate groups are bonded to the Cadmium atom giving, the first time for this kind of ligands, a distorted octahedral geometry. Complexes have been characterised by elemental analyses and mass spectra as well as by IR, 1H, 13C and 113Cd NMR and 13C and 113Cd CP/MAS NMR spectroscopies. In all complexes LH6 acts as a tetradentate N2S2 ligand. The electrochemical behaviour of complexes, studied by cyclic voltammetry, shows metal centred and ligand reduction processes for all of them.
Ma Antonia Mendiola - One of the best experts on this subject based on the ideXlab platform.
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Versatile chelating behavior of benzil bis(thiosemicarbazone) in zinc, Cadmium, and nickel complexes.
Inorganic Chemistry, 2004Co-Authors: Elena López-torres, Ma Antonia Mendiola, César J. Pastor, Beatriz Souto PérezAbstract:Reactions of benzil bis(thiosemicarbazone), LH(6), with M(NO(3))(2).nH(2)O (M = Zn, Cd, and Ni), in the presence of LiOH.H(2)O, show the versatile behavior of this molecule. The structure of the ligand, with the thiosemicarbazone moieties on opposite sides of the carbon backbone, changes to form complexes by acting as a chelating molecule. Complexes of these metal ions with empirical formula [MLH(4)] were obtained, although they show different molecular structures depending on their coordinating preferences. The zinc complex is the first example of a crystalline coordination polymer in which a bis(thiosemicarbazone) acts as bridging ligand, through a nitrogen atom, giving a 1D polymeric structure. The coordination sphere is formed by the imine nitrogen and sulfur atoms, and the remaining position, in a square-based pyramid, is occupied by an amine group of another ligand. The Cadmium Derivative shows the same geometry around the metal ion but consists of a dinuclear structure with sulfur atoms acting as a bridge between the metal ions. However, in the nickel complex LH(6) acts as a N(2)S(2) ligand yielding a planar structure for the nickel atom. The ligand and its complexes have been characterized by X-ray crystallography, microanalysis, mass spectrometry, IR, (1)H, and (13)C NMR spectroscopies and for the Cadmium complex by (113)Cd NMR in solution and in the solid state.
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synthesis and characterisation of zinc Cadmium and mercury complexes of benzilbisthiosemicarbazone structure of Cadmium Derivative
Inorganica Chimica Acta, 2001Co-Authors: Elena Lopeztorres, Ma Antonia Mendiola, Jesus Rodriguezprocopio, Ma Teresa Sevilla, Enrique Colacio, Jose Ma Moreno, Isabel SobradosAbstract:Abstract Complexes [MLH6(NO3)2] (M=Cd, Hg) (1 and 2), [MLH4] (M=Hg, Zn) (3 and 5) and [ZnLH5NO3] (4) have been synthesised by reaction of benzilbisthiosemicarbazone LH6 with Cadmium, mercury and zinc nitrates in ethanol. The X-ray diffraction study of Cadmium complex 1 shows that the azomethine nitrogen atoms, the sulfur atoms and the nitrate groups are bonded to the Cadmium atom giving, the first time for this kind of ligands, a distorted octahedral geometry. Complexes have been characterised by elemental analyses and mass spectra as well as by IR, 1H, 13C and 113Cd NMR and 13C and 113Cd CP/MAS NMR spectroscopies. In all complexes LH6 acts as a tetradentate N2S2 ligand. The electrochemical behaviour of complexes, studied by cyclic voltammetry, shows metal centred and ligand reduction processes for all of them.
Jose Ma Moreno - One of the best experts on this subject based on the ideXlab platform.
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synthesis and characterisation of zinc Cadmium and mercury complexes of benzilbisthiosemicarbazone structure of Cadmium Derivative
Inorganica Chimica Acta, 2001Co-Authors: Elena Lopeztorres, Ma Antonia Mendiola, Jesus Rodriguezprocopio, Ma Teresa Sevilla, Enrique Colacio, Jose Ma Moreno, Isabel SobradosAbstract:Abstract Complexes [MLH6(NO3)2] (M=Cd, Hg) (1 and 2), [MLH4] (M=Hg, Zn) (3 and 5) and [ZnLH5NO3] (4) have been synthesised by reaction of benzilbisthiosemicarbazone LH6 with Cadmium, mercury and zinc nitrates in ethanol. The X-ray diffraction study of Cadmium complex 1 shows that the azomethine nitrogen atoms, the sulfur atoms and the nitrate groups are bonded to the Cadmium atom giving, the first time for this kind of ligands, a distorted octahedral geometry. Complexes have been characterised by elemental analyses and mass spectra as well as by IR, 1H, 13C and 113Cd NMR and 13C and 113Cd CP/MAS NMR spectroscopies. In all complexes LH6 acts as a tetradentate N2S2 ligand. The electrochemical behaviour of complexes, studied by cyclic voltammetry, shows metal centred and ligand reduction processes for all of them.
Enrique Colacio - One of the best experts on this subject based on the ideXlab platform.
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synthesis and characterisation of zinc Cadmium and mercury complexes of benzilbisthiosemicarbazone structure of Cadmium Derivative
Inorganica Chimica Acta, 2001Co-Authors: Elena Lopeztorres, Ma Antonia Mendiola, Jesus Rodriguezprocopio, Ma Teresa Sevilla, Enrique Colacio, Jose Ma Moreno, Isabel SobradosAbstract:Abstract Complexes [MLH6(NO3)2] (M=Cd, Hg) (1 and 2), [MLH4] (M=Hg, Zn) (3 and 5) and [ZnLH5NO3] (4) have been synthesised by reaction of benzilbisthiosemicarbazone LH6 with Cadmium, mercury and zinc nitrates in ethanol. The X-ray diffraction study of Cadmium complex 1 shows that the azomethine nitrogen atoms, the sulfur atoms and the nitrate groups are bonded to the Cadmium atom giving, the first time for this kind of ligands, a distorted octahedral geometry. Complexes have been characterised by elemental analyses and mass spectra as well as by IR, 1H, 13C and 113Cd NMR and 13C and 113Cd CP/MAS NMR spectroscopies. In all complexes LH6 acts as a tetradentate N2S2 ligand. The electrochemical behaviour of complexes, studied by cyclic voltammetry, shows metal centred and ligand reduction processes for all of them.
