Preparation and structural characterization of organotin(IV) complexes with ligands containing a hetero {N} atom and a hydroxy group or hydroxy and carboxyl groups

Crystal and solution structures of di-n-butyltin(IV) complexes of 5-[(E)-2-(4-methoxyphenyl)-1-diazenyl]quinolin-8-ol and benzoic acid derivatives: En route to elegant self-assembly via modulation of the tin coordination geometry

“…Cl [3], n Bu [4,5], t Bu [4], Ph [6,7] and Bz [8] revealed molecules with a highly distorted octahedral coordination of the tin atom by bidentate quinolin-8-olate groups and essentially cis-R groups. Structural information on R 2 SnX(L) type complexes (e.g.…”

Synthesis, structural characterization and biological studies of the triphenyltin(IV) complex with 2-thiobarbituric acid

“…The interaction of the similar ligand 4,6-dihydroxypyrimidine (H 2 DHPM) toward di-n-butyltin(IV) moiety was also studied previously [15]. The preparation procedure of 1 is a somewhat modification of the one reported earlier [15] for the preparation of the du-n-butyltin complex with H 2 DHPM. Spectroscopic data of this compound also showed binding of the phenolate oxygen(s) to the metal ions [15] as in the case of 1.…”

“…Thus, the chemistry that join together organotin moieties and hydroxyl derivatives (e.g. 4,6-dihydroxypyrimidine ligand) is already known [15]. These complexes are prepared by refluxing a methanolic solution of the sodium salt of the ligands with organotin halides.…”

Mixed ligand complexes with 2-piperidine-carboxylic acid as primary ligand and ethylene diamine, 2,2′-bipyridyl, 1,10-phenanthroline and 2(2′-pyridyl)quinoxaline as secondary ligands: preparation, characterization and biological activity

“…The strong bands at 1643 and 1373 cm )1 are assigned to m as (COO ) ) and m s (COO ) ) vibration, respectively. In the spectra of the complexes, the separation between these two bands {D = m as (COO ) ) ) m s (COO ) ) $ 220cm )1 } indicates the monodentate coordination mode of the carboxylate group [5,[18][19][20][21]. The bands at 3140 and 1570 cm )1 arise from m(NH) and d(NH) vibrations, respectively, and, as expected, these bands are shifted to lower wave number upon complexation [21][22][23].…”