Structural and spectral studies of N-(3-hydroxypyridine-2-yl)-5- hydroxysalicylideneimine and its dimethyltin(IV) complex

N-(3-hydroxypyridine-2-yl)-5-hydroxysalicylideneimine(HOC6H3OHCHyNC5H3NOH) (1) and its dimethyltin(IV) complex (Me2- Sn(OC6H3OHCHyNC5H3NO)) (2) were prepared and characterized by 1H-NMR, IR, mass spectroscopy and single crystal X-ray diffraction method. The complex (2) crystallizes in the space group C2=c with cell dimensions a ¼ 20:841ð2Þ; b ¼ 10:646ð2Þ; c ¼ 13:206ð2Þ A° , b ¼ 105:95ð1Þ8 with Z ¼ 8; V ¼ 2817:3ð6Þ A° 3. Molecular structure has been determined by standard methods and refined by full-matrix least squares (on F2Þ to R value of 0.036. The studied tin(IV) complex exhibits the strongly distorted square-pyramidal geometry around tin atom. In the solid state, each distorted square-pyramidal Me2Sn(OC6H3OHCHyNC5H3NO) unit is connected to the others via dual use of hydrogen bonds and p–p interactions. The tautomeric effect of ligand was discussed besides the coordination geometry of the complex (2). q 2004 Elsevier B.V. All rights reserved.