ABSTRACT In the title complex, [Sn(C(6)H(5))(3)(C(7)H(3)ClNO(4))(CH(4)O)], the five-coordinate Sn(IV) atom exists in a trigonal-bipyramidal environment, formed by a monodentate carboxyl-ate group, three phenyl rings and a methanol mol-ecule. The axial sites are occupied by the O atoms of the methanol mol-ecule and the carboxyl-ate group, while the equatorial plane is formed by the C atoms of three phenyl rings. The benzene ring of the 2-chloro-4-nitro-benzoate ligand makes dihedral angles of 66.18 (7), 74.71 (7) and 77.39 (7)° with respect to the three phenyl rings. In the crystal, the mol-ecules are linked via inter-molecular O-H⋯O and C-H⋯O hydrogen bonds into a column along the b axis.
SourceAvailable from: Siang G Teoh[Show abstract] [Hide abstract]
ABSTRACT: In the title compound, [Sn(C(6)H(5))(3)(C(7)H(3)ClNO(4))], the four-coordinate Sn(IV) atom exists in a distorted tetra-hedral geometry, formed by a monodentate carboxyl-ate group and three phenyl rings. The conformation is stabilized by an intra-molecular C-H⋯O hydrogen bond, which generates an S(5) ring. The aromatic ring of the 4-chloro-3-nitro-benzoate ligand makes dihedral angles of 75.64 (12), 64.37 (12) and 2.97 (12)° with the three phenyl ligands. The O atoms of the nitro group are disordered over two sets of sites in a 0.817 (5):0.183 (5) ratio. In the crystal, mol-ecules are linked via inter-molecular C-H⋯O hydrogen bonds into chains running parallel to .Acta Crystallographica Section E Structure Reports Online 09/2011; 67(Pt 9):m1270-1. DOI:10.1107/S160053681103282X · 0.35 Impact Factor
[Show abstract] [Hide abstract]
ABSTRACT: The title compound, [Sn(C(6)H(5))(3)(C(7)H(5)N(2)O(4))](n), forms polymeric chains along . The Sn(IV) ion is five-coordinated in a distorted trigonal-bipyramidal geometry by two monodentate carboxyl-ate groups and three phenyl rings. The axial sites are occupied by the O atoms of two symmetry-related carboxyl-ate groups [O-Sn-O = 170.88 (3)°]. The benzene ring of the 5-amino-2-nitro-benzoate ligand forms dihedral angles of 82.92 (6), 81.10 (6) and 83.54 (6)° with respect to the three phenyl rings. In the crystal, the chains are linked by inter-molecular N-H⋯O and weak C-H⋯O inter-actions into a three-dimensional network. The crystal structure is further stabilized by weak inter-molecular C-H⋯π inter-actions.Acta Crystallographica Section E Structure Reports Online 09/2011; 67(Pt 9):m1276-7. DOI:10.1107/S1600536811033332 · 0.35 Impact Factor
[Show abstract] [Hide abstract]
ABSTRACT: Cancer cases are alarmingly increasing worldwide, and newer chemotherapeutic agents are needed. Recent analogs of cisplatin (carboplatin, lobaplatin, nedaplatin and oxaliplatin) and their marketing as advanced chemotherapeutic drugs have furthered the interest in metal-based anti-cancer drugs. In the current study, two new polymeric organotin(IV) carboxylate complexes (1 and 2) have been synthesized and characterized. Spectroscopic studies showed that coordination took place via carboxylates. Furthermore, X-ray crystallographic study on 1 indicated that it possesses a monomeric structure and exists in polymeric formation due to additional Sn-N coordination, assigning seven coordinations to each metal ion. Both the complexes were tested against three cancerous (human colon cancer, HCT 116; breast cancer, MCF-7; and leukemia, K562) and one non-cancerous (3T3-L1) cell lines. Complex 1 showed exceptional cytotoxicity against cancerous cell lines (IC50 = 1.0 mu M for HCT 116; 258.7 nM for MCF-7; and 46.7 nM K562) and remained comparatively non-toxic against normal cells (IC50 = 37.0 mu M). This shows that both complexes have selective cytotoxicity against cancer cells.Journal of Coordination Chemistry 09/2014; 67(20):1-13. DOI:10.1080/00958972.2014.963571 · 2.22 Impact Factor