Preparation,spectral and structural characterization of (2-benzoylpyridine N(4)-methyl-N(4)-phenylthiosemicarbazonato) chloropalladium(II) |
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Authors: | Kovala-Demertzi Dimitra Demertzis Mavroudis Yadav Paras Nath Castiñeiras Alfonso West |
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Institution: | (1) Department of Chemistry, University of Loannina, Loannina, Greece;(2) Department of Chemistry, Illinois State University, Normal, IL 61790-4160, USA |
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Abstract: | The synthesis, as well as spectral and structural characterization, of (2-benzoylpyridine-N(4)-methyl-N(4)-phenylthiosemicarbazonato)chloropalladium(II), Pd(Bz4MePh)Cl], is described. The unit cell contains two crystallographically independent molecules Pd(1)(Bz4MePh)Cl], (1), and Pd(2)(Bz4MePh)Cl], (2), stabilized by intra- and intermolecular hydrogen bonding. The distance between the Pd(1) and Pd(2) centres is 3.5038(11) Å. The spectroscopic techniques used in this study are the following: u.v.-visible, i.r. and 1H n.m.r. The protonation constants, determined spectrophotometrically, of the uncoordinated HBz4MePh are pKa1 = 10.82 ± 0.03 and pKa2 = 4.09 ± 0.02. |
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