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Different Coordination Modes of Saccharin in the Complexes of Lead(II) with 2-Pyridylmethanol and Pyridine-2, 6-dimethanol — Synthesis, Spectral and Structural Characterization

✍ Scribed by Veysel T. Yilmaz; Serkan Guney; Carsten Thöne

Publisher
John Wiley and Sons
Year
2002
Tongue
German
Weight
92 KB
Volume
628
Category
Article
ISSN
0372-7874

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✦ Synopsis

New lead(II)-saccharin complexes, [Pb(sac) 2 (pym)] (1) and [Pb(sac) 2 (pydm)] (2) (sac ϭ saccharinate anion; pym ϭ 2-pyridylmethanol; pydm ϭ pyridine-2,6-dimethanol) were synthesized and characterized by IR spectroscopy and single crystal X-ray diffractometry. Complex 1 crystallizes in the monoclinic P2 1 /c space group with Z ϭ 4, while the crystals of complex 2 are extremely X-ray sensitive and decompose by the X-ray beam within one day. Pym and pydm act as bi-and tridentate ligands, respectively. Most important feature of the complexes is non-equivalent coordination of the sac ligands to the lead(II) atom. In the complex 1, the sac ligands coordinate to the lead(II) ion in two distinct manners. One

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The crystal structure of a copper(II) complex of 2acetylpyridine 3-piperidylthiosemicarbazone, [Cu(Acpip) 2 ], indicates a tridentate, monoanionic ligand (i. e., pyridine nitrogen, imine nitrogen and thiolato sulfur atoms) and a bidentate, monanionic ligand (i. e., imine nitrogen and thiolato sulfur