David G. Calatayud - Reactivity of benzil bis(4-methyl-3-thiosemicarbazone) with cadmium nitrate. Crystal structure of [Cd(LMe2H4)(NO3)(2)][Cd(LMe2H4)(NO3)(H2O)]NO3 center dot H2O

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  Calatayud, D G, Lopez-Torres, E, Mendiola, M A   Polyhedron 2008 27 (11)   2277-2284

  Abstract: The reaction between cadmium nitrate   dihydrate and benzil bis(4-methyl-3-thiosemicarbazone), LMe2H4,   depends on the working conditions. In methanol the reaction gives   the novel complex [Cd(LMe2H4)(NO3)2][Cd(LMe2H4)(NO3)(H2O)]NO3 ·   H2O (1). Its crystal structure shows the presence of two cadmium   atoms with different coordination numbers, seven and eight, and   the ligands acting as N2S2 neutral molecules. One cadmium has the   coordination sphere completed by a bidentate nitrato group and a   water molecule, whereas the other one is bonded to two bidentate   nitrato groups. Both molecules are joined to one nitrate ion and   to an additional water molecule by hydrogen bonds. In the   presence of lithium hydroxide, the reaction leads to a binuclear   complex with the ligand doubly deprotonated [Cd(LMe2H2)]2 (2).   The complexes were characterized by elemental analysis, mass   spectrometry, 13C and 113Cd CP/MAS NMR and, in the case of   complex 1, by X-ray diffraction.

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