Re-visiting of 5-[(E)-2-(aryl)-1-diazenyl]-quinolin-8-ol with tweaking of Sn-Ph groups:: Synthesis, spectroscopic characterization and X-ray crystallography

Reactions of sodium 5-[(E)-2-(aryl)-1-diazenyl]quinolin-8-olates (LH, where the aryl group is an R-substituted phenyl ring such that for L(1)H: R = H; L(2)H: R = 2'-CH(3); L(3) H: R = 3'-CH(3); L(4)H: R = 4'-CH(3); L(5) H: R = 4'-OCH(3) and L(6) H: R = 4'-OC(2)H(5)) with Ph(3)SnCl in a 1: 1 molar ratio yielded complexes of composition Ph(3)SnL. The complexes have been characterized by (1)H, (13)C , (119)Sn NMR, IR and (119m)Sn Mossbauer spectroscopic techniques in combination with elemental analyses. The crystal structures of Ph(3)SnL(1)center dot 0.5C(6)H(6) (1), Ph(3)SnL(2) (2), Ph(3)SnL(5) center dot C(6)H(6) (5) and Ph(3)SnL(6) center dot 0.5C(6)H(6) (6) were determined. The results of the X-ray studies indicated that the benzene solvated compounds 1, 5 and 6 are distorted square pyramid, with one of the phenyl C atoms in the apex while the ligand arrangement around central Sn atom in 2 is distorted trigonal-bipyramidal, with a phenyl C and the oxinato N atoms in axial positions. (C) 2008 Elsevier B.V. All rights reserved.