Square-planar 1:2 Ni(II) and Pd(II) complexes with different coordination mode of salicylaldehyde (4)-phenylthiosemicarbazone: Synthesis, structure and spectral properties

Square-planar 1:2 Ni(II) (1) and Pd(II) (2a, 2b) complexes with different coordination mode of salicylaldehyde (4)-phenylthiosemicarbazone (4-PhTSC-salH 2) have been synthesized. The molecular and crystal structure for obtained complexes was determined by X-ray crystallography and confirmed by 1H NM...

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Bibliographic Details
Published in:Journal of molecular structure 2010-12, Vol.984 (1), p.15-22
Main Authors: Bon, V.V., Orysyk, S.I., Pekhnyo, V.I., Volkov, S.V.
Format: Article
Language:English
Subjects:
Bonding
Crystal structure
Infrared radiation
Ligands
Molecular structure
Nickel
Palladium
Polymorphism
Spectra
Sulfur
Thiosemicarbazone
X-ray structure
X-rays
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Summary:Square-planar 1:2 Ni(II) (1) and Pd(II) (2a, 2b) complexes with different coordination mode of salicylaldehyde (4)-phenylthiosemicarbazone (4-PhTSC-salH 2) have been synthesized. The molecular and crystal structure for obtained complexes was determined by X-ray crystallography and confirmed by 1H NMR, UV–vis, IR spectroscopy and elemental analysis. It has been shown that one of the 4-PhTSC-salH 2 molecules coordinate to the metal ion in tridentate manner in thiolic tautomeric form as a E-isomer; at the same time, another ligand molecule bonded to the metal ion only via thioamide sulphur atom in thion tautomeric form as a Z-isomer. The two polymorphic modifications for the Pd complex with similar molecular, but different crystal structure were obtained and discussed.
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2010.08.046