Article,
Synthesis and characterization of some organotin(IV) adducts containing a related series of pyridines: Crystal structure of SnMe2Cl2(bu(2)bpy)
POLYHEDRON, 29 (5): 1393-1398 (March 2010)
DOI: {10.1016/j.poly.2010.01.025}
Abstract
Organotin(IV) complexes of SnR(4-n)Cln (n = 2, R = Me, Bu-n; n = 1,
R = Ph) react with the bidentate pyridyl ligand
4,4'-di-tert-butyl-2,2'-bipyridine (bu(2)bpy) to give hexa-coordinated
adducts with the general formula SnR(4-n)Cln(bu(2)bPY). However, the
reaction of these organotin(IV) complexes with the corresponding
monodentate ligand 4-tert-butylpyridine (bupy) resulted in the formation
of the hexa-coordinated complex SnMe2Cl2(bupy)(2) and the
penta-coordinated complexes SnR(4-n)Cln(bupy) (bupy) (n = 2, R =
Bu-n: n = 1, R = Ph). Moreover, the reaction of the above organotin(IV)
complexes with 4,4'-trimethylenedipyridine (tmdp) yields
hexa-coordinated adducts with the general formula SnR2Cl2(tmdp) (R =
Me, Bu-n) and the penta-coordinated complex ClPh3Sn-mu-(tmdp)SnPh3Cl
in the solid state. The resulting complexes have been characterized by
multinuclear NMR (H-1, C-13, Sn-119) spectroscopy and elemental
analysis. NMR data shows that the triphenyltin(IV) adducts are not
stable in solution and dissociate to give tetra-coordinated tin(IV)
complexes. The X-ray crystal structure determination of
SnMe2Cl2(bu(2)bpy) reveals that the tin atom is hexa-coordinated in
an octahedral geometry with a trans-SnMe2 configuration. (C) 2010
Published by Elsevier Ltd.
