Mixed ligand palladium(II) complexes of oxalate and malonate with vitamin-B6 molecules: synthesis,crystal structure and kinetics |
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| Authors: | Dey Sukalpa Banerjee Pradyot Gangopadhyay Sumana Vojtíšek Pavel |
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| Affiliation: | (1) Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata, 700 032, India;(2) Department of Chemistry, Gurudas College, Narikeldanga, Kolkata, 700 054, India;(3) Department of Inorganic Chemistry, Universita Karlova, Albertov 2030, 128 40 Prague 2, Czech Republic |
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| Abstract: | The synthesis of six mononuclear palladium complexes of general formula [Pd(ox)/(mal)L2] and [Pd(ox)/(mal)L ] (ox = oxalate, mal = malonate, both L and L are vitamin-B6 molecules (I), L = pyridoxine, pyridoxal and L = pyridoxamine) has been achieved. The structures of these compounds were established by elemental analysis, i.r. and 13C-n.m.r. [Pd(oxalate)(pyridoxine)2] was analyzed by single crystal X-ray diffraction. It exhibits square planar coordination with bond lengths 2.015 (2) Å for Pd—N and 2.010 (2) Å for Pd—O. The interaction of [Pd(ox)2]2– and [Pd(mal)2]2– with L has been followed kinetically in order to look into the nature of products and the mechanism of formation under the conditions [PdII-chelate]  [L] and [L]. |
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