Chun-lin Ma, Jikun Li, Ru-fen Zhang
May 15, 2006
Citations
0
Influential Citations
27
Citations
Journal
Inorganica Chimica Acta
Abstract
Abstract The trimethyltin(IV) polymer [(Me 3 Sn) 2 (nip) · EtOH] n ( 1 ) of 5-nitroisophthalic acid (H 2 nip) and its three derivatives with mixed organic N-donor ligands 2,2′-bipy [(Me 3 Sn) 2 (nip) · 2H 2 O] · [(Me 3 Sn) 2 (nip) · H 2 O] · 2(2,2′-bipy) ( 2 ) 4,4′-bipy {[(Me 3 Sn) 2 (nip)] 2 (4,4′-bipy)} n ( 3 ) or phen [(Me 3 Sn) 2 (nip) · H 2 O] · (phen) ( 4 ) have been synthesized by the reaction of trimethyltin(IV) chloride and H 2 nip when sodium ethoxide was added in the presence of 2,2′-bipy 4,4′-bipy or phen. All complexes 1 – 4 were characterized by elemental, IR, 1 H, 13 C, and 119 Sn NMR spectroscopy and X-ray crystallography analyses. Crystal, data collection and structure refinement parameters for complexes 1 , 2 , 3 and 4 are shown in Table 1 , Table 2 , respectively. The X-ray data showed the geometries of all the tin atoms in complexes 1 – 4 are trigonal bipyramidal. The X-ray analysis of 1 showed that the structure was a polymeric infinite chain with neighboring triorganotin centers being linked by dicarboxylate ligands and hydrogen bonds were found between adjacent chains. For 2 , two different monomers were found, in one monomer, Me 3 Sn were coordinated to both carboxyl groups of the ligand and water molecules were coordinated to the two Sn(IV) centers. In the other monomer, water molecules were coordinated to only one Sn center. Co-crystallized2,2′-bipy was found in 2 and a 2D supermolecular structure was formed via O–H⋯O and O–H⋯N (N atoms derived from 2,2′-bipy) hydrogen bonds. In 3 however, a 2D polymeric block was formed due to the inversion center of the 4,4′-bipy. For 4 , due to the O–H⋯O and O–H⋯N (N atoms derived from phen) hydrogen bonds and intermolecular Sn⋯O bonds, a 2D polymeric structure was formed.