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Abstract: Three new diorganotin(IV) complexes, [Bu2Sn(O2SeC6H5)2] n (1), [Bu2Sn(O2SeC6H4Me)2] n (2), [Me2Sn(O2SeC6H4Bu)2] n (3) have been synthesized by the reaction of benzeneseleninic acid, p-tolueneseleninic acid, and 4-tert-butylbenzeneseleninic acid with Me2SnCl2 or Bu2SnCl2 in the presence of sodium ethoxide in methanol at 50°C. All of the complexes were characterized by elemental analysis, FT-IR, NMR (1H, 13C and 119Sn) spectroscopy and X-ray crystallography. X-ray diffraction studies of 1, 2, 3 show that the areneseleninate groups behave as double bridges between the tin atoms leading to polymeric chain structure with Sn2O4Se2 eight-membered ring. The organic groups bonded to the tin atoms are in trans-position in the resulting octahedral arrangement. [Copyright &y& Elsevier]

Abstract: Six new triorganotin(IV) complexes, [R3Sn(O2SeC6H4Cl)] n (R=Me 1; Ph 2), [R3Sn(O2SeC6H4Me)] n (R=Me 3; Ph 4), [R3Sn(O2SeC6H4Bu)] n (R=Me 5; Ph 6) have been synthesized by the reaction of 4-chlorobenzeneseleninic acid, p-Tolueneseleninic acid, and 4-tert-butylbenzeneseleninic acid with triorganotin(IV) chloride in the presence of sodium ethoxide. All of the complexes were characterized by elemental analysis, FT-IR, NMR (1H, 13C, and 119Sn) spectroscopy, and X-ray crystallography. Crystal structures show that all of the complexes exhibit 1D infinite chain structures which are generated by the bidentate oxygen atoms and the five-coordinated tin centers. [Copyright &y& Elsevier]

Abstract: The self-assembled reaction of 2-hydroxynicotinic acid, KOH and tri-n-butyltin chloride in CH3OH and H2O (V/V=5:1) under solvothermal condition (150°C) affords a novel mixed tri- and dibutyltin macrocyclic complex 1. Characterization of the complex 1 was achieved using elemental analysis, IR, NMR (1H, 13C and 119Sn) spectroscopy, TGA and X-ray crystallography diffraction analysis. X-ray data revealed that it is an unusual 16-membered macrocycle containing eight tin atoms, and they can be divided into four sorts by the distinct environments, the endocyclic tin atoms are best described as five- and six-coordinate and the exocyclic tin atoms as five-coordinate. Furthermore, a 2D corrugated sheet is formed by intermolecular C–H⋯Cl, O–H⋯N and O–H⋯O weak interactions. [Copyright &y& Elsevier]

Abstract: Three types of methyltin phosphonates, {[(CH3)3Sn]4(O3PPh)2} n (1), {[(CH3)3Sn]2(O3PPh)·CH3OH} n (2) and {[(CH3)2SnO3PPh]4} n (3) were synthesized by the reaction of phenylphonic acid with trimethyltin (IV) chloride and dimethyltin (IV) dichloride, respectively. Complexes 1, 2 and 3 were characterized by elemental analysis, IR, NMR (1H, 13C, 31P and 119Sn) spectroscopy, TGA and X-ray crystallography diffraction analysis. The X-ray analysis of complex 1 shows that the structure is a polymeric infinite 1D zigzag chain. In complex 2, the oxygen atom of methanol molecule is coordinated to the tin atoms, and a 2D network is generated via O–H⋯O hydrogen bonds. In complex 3, a novel 2D network containing 12-membered (Sn3O6P3) rings is formed. [Copyright &y& Elsevier]

Abstract: Four new triorganotin complexes of 3-amino-5-mercapto-1,2,4-triazole with the type of R3Sn(SC2N3HNH2-3) (R=Me, 1; n-Bu, 2; Ph, 3; PhCH2, 4) have been synthesized. All the complexes have been characterized by elemental analysis, IR, 1H NMR and 13C NMR spectra. Complexes 1, 3 and 4 have been characterized by X-ray crystallography analyses too. The geometry about Sn of complex 1 is distorted trigonal bipyramidal and the supramolecular structures of complex 1 has been found consist of channels built up by intermolecular N–H⋯N hydrogen bonding. The geometry of tin atoms in complexes 3 and 4 are distorted tetrahedron and 1D polymers connected by intermolecular N–H⋯N hydrogen bonding or N–H⋯N and N–H⋯S hydrogen bonding. Additionally, 1D polymer of complex 3 aggregated in 2D layer by intermolecular N–H⋯S hydrogen bonding. [Copyright &y& Elsevier]

Abstract: Nine triorganotin(IV) complexes of the type R3SnL (L=L1 R=Me 1, Ph 2, PhCH2 3; L=L2 R=Me 4, Ph 5, PhCH2 6; L=L2 R=Me 7, Ph 8, PhCH2 9) have been obtained by reaction of new Schiff base HL1, HL2 or HL3 with triorganotin(IV) chloride in the presence of sodium ethoxide. All the complexes 1–9 were characterized by elemental, IR and NMR spectra analyses. Except for complexes 3, 4, 6, 9, the others were also characterized by X-ray crystallography diffraction analyses, which revealed that complexes 1, 2, 5, 7, 8 were four coordinated and displayed a capped tetrahedron. [Copyright &y& Elsevier]

Abstract: A new macrocycle dimethyltin(IV) complex 1 has been synthesized by the reaction of 5-phenyl-1,3,4-oxadiazole-2-thiol with dimethyltin dichloride in the presence of sodium ethoxide. The complex 1 has been characterized by elemental, IR, 1H, 13C, 119Sn NMR spectra and X-ray crystallography diffraction analyses. X-ray data reveal that a 24-membered macrocycle associated by intermolecular CO non-bonded weak interactions. The geometry about each tin atom involved is distorted trigonal bipyramidal. [Copyright &y& Elsevier]

Abstract: A series of new organotin(IV) derivatives with 2,3,4,5-tetrafluorobenzoic acid: {[(2,3,4,5-F4C6HCO2)R2Sn]2O}2 (R=Et 1, n-Bu 2, Ph 3), [R2Sn(O2CC6F4H)2] n (R= n-Bu 4, Et 5, Ph 6), and Sn2R4(O2CC6F4H)3(OH) (R=Et 7, n-Bu 8, Ph 9), were synthesized by the reaction of diorganotin oxide and 2,3,4,5-tetrafluorobenzoic acid. All the complexes 1-9 have been characterized by elemental analysis, IR, 1H, 13C, 119Sn NMR spectra. Among them complexes 2, 4, 8 were also characterized by X-ray crystallography diffraction analyses. The crystal structure of complex 2 exhibited a tetra-nuclear geometry with the Sn2O2 symmetry core. Complex 4 formed a 1D helical double-chain structure through intermolecular O→Sn coordinating and completed a DNA-like assembly. Complex 8 revealed that the both Sn atoms were held together by hydroxide and acetate bridges, forming a chair-like six-membered ring. Moreover, the supramolecular structures of dimer, 1D chain or 2D network have been found in complexes 4 and 8 by intermolecular C–H⋯F weak hydrogen bond and non-bonded F⋯F or F⋯Sn interaction, which were highly effective in the assembly of supramolecular structures and could lead to the formation of complexes with fascinating topologies properties. [Copyright &y& Elsevier]

Abstract: The trimethyltin(IV) polymer [(Me3Sn)2(nip)·EtOH] n (1) of 5-nitroisophthalic acid (H2nip) and its three derivatives with mixed organic N-donor ligands 2,2′-bipy [(Me3Sn)2(nip)·2H2O]·[(Me3Sn)2(nip)·H2O]·2(2,2′-bipy) (2) 4,4′-bipy {[(Me3Sn)2(nip)]2(4,4′-bipy)} n (3) or phen [(Me3Sn)2(nip)·H2O]·(phen) (4) have been synthesized by the reaction of trimethyltin(IV) chloride and H2nip 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, 1H, 13C, and 119Sn NMR spectroscopy and X-ray crystallography analyses. Crystal, data collection and structure refinement parameters for complexes 1, 2, 3 and 4 are shown in , 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, Me3Sn 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. [Copyright &y& Elsevier]

Abstract: A series of diorganotin (IV) complexes of the types of R2SnCl(SSCC3H3N2) (R=CH3 1, n Bu 2, C6H5 3 and C6H5CH2 4), R2Sn(SSCC3H3N2)2 (R=CH3 5, n Bu 6, C6H5 7 and C6H5CH2 8) and R2Sn(SSCC3H2N2) (R=CH3 9, n Bu 10, C6H5 11 and C6H5CH2 12) have been obtained by reactions of 4(5)-imidazoledithiocarboxylic acid with diorganotin (IV) dichlorides in the presence of sodium ethoxide. All complexes are characterized by elemental, IR, 1H, 13C and 119Sn NMR spectra analyses. Also, the complexes 1, 7 and 9 are characterized by X-ray crystallography diffraction analyses, which reveal that the complex 1 is monomeric structure with five-coordinate tin (IV) atom, the complex 7 is monomeric structure with six-coordinate tin (IV) atom and the complex 9 is one-dimensional chain with five-coordinate tin (IV) atom. [Copyright &y& Elsevier]

[Display omitted] Organotin(IV) complexes 2 and 4 exhibited strong cytostatic activity towards HeLa and HepG-2 cell lines. Meanwhile, the complex 4 exhibited much stronger inhibition against five common plant pathogenic fungi in vitro. Then, the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) micrographs were used to study changes on the fungal morphology for the treatments with the complex 4, which indicated the complex 4 can damage the cell wall of mycelia. • The organotin(IV) complexes 1 – 4 formed varieties of supramolecular structures. • The organotin(IV) complexes 2 and 4 showed higher anticancer activities. • Complex 4 exhibited a broad spectrum of antifungal potential activity. • Complex 4 could break down the cell wall of the fungus. Four new organotin(IV) complexes, [(Me 2 Sn) 4 O 2 (C 10 H 10 F 2 NO 4 S) 4 ] (1), [(n -Bu 2 Sn) 4 O 2 (C 10 H 10 F 2 NO 4 S) 4 ] (2), [Me 3 SnC 10 H 10 F 2 NO 4 S] (3) and [ n -Bu 3 SnC 10 H 10 F 2 NO 4 S] (4) have been synthesized by the reactions of 2,6-difluoro-3-(propylsulfonamido)benzoic acid with R 2 SnO (R = Me, and n -Bu) or R 3 SnCl (R = Me, and n -Bu). The four complexes have been characterized by elemental analysis, FT-IR, NMR (1H, 13C and 119Sn), and X-ray crystallography. The X-ray crystallography analyses revealed that the complexes 1 and 2 represent tetranuclear tin ladder-like geometries. In comparison, complexes 3 and 4 exhibit 1D zig-zag chains. Complex 1 constructs a 2D planar structure by N H···O and C H···O intermolecular hydrogen bonding. Complex 2 constructs a 3D supramolecular framework via the C H···O and C H···F intermolecular hydrogen bonding. The 3D supramolecular frameworks of complexes 3 and 4 were formed by S O···H intermolecular hydrogen bonding, respectively. Furthermore, in vitro cytostatic activity of complexes 1 – 4 against the cervical carcinoma (HeLa) and the hepatocellular carcinoma (HepG-2) cell lines were examined by MTT screening. Results indicated that complexes 2 and 4 exhibited strong cytostatic activity. Meanwhile, the inhibition of complexes 1 – 4 against five common plant pathogenic fungi in vitro was obtained by the mycelial growth inhibition method, and the results revealed that complex 4 exhibited much stronger inhibition. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) micrographs were used to study changes on the fungal morphology for the treatments with complex 4. [ABSTRACT FROM AUTHOR]

Abstract: Eight triorganotin complexes of the types [(R3Sn)2(C24H16N8S2)].Y (R=Ph, Y=0 (1); R=PhCH2, Y=2CH3OH (2); R= n-Bu, Y=0 (3)), [(R3Sn)2(C24H16N8S2)] n (R=Me (4)), [(R3Sn)2(C12H6N6S4)]·Y (R=Ph, Y=CH2Cl2 (5); R=PhCH2, Y=0 (6)) and [(R3Sn)2(C12H6N6S4)] (R=Bu (7), R=Me (8)) have been obtained by H2L1 (H2L1 derived from 4-amino-5-phenyl-4H-1,2,4-triazole-3-thiol) and H2L2 (H2L2 derived from 5-amino-1,3,4-thiadiazole-2-thiol) with triorganotin chloride in the presence of sodium ethoxide. All the complexes were characterized by elemental, IR and NMR spectra analyses, except for complexes 1, 3, 6 and 8, other complexes were also characterized by X-ray diffraction analyses, which reveal that complexes 2 and 5 are dinuclear structures, complex 4 has a 2D network structure and complex 7 forms a macrocyclic structure linked by intermolecular N→Sn interactions. [Copyright &y& Elsevier]

Abstract: A novel spring-like organotin complex [(Ph3Sn)(C7H5ClNO2)] n·3C6H6 (1), has been synthesized by treatment of 6-chloro-3-pyridineacetic acid bis(triphenyltin)oxide on the condition of reflux. The complex was characterized by elemental analysis, FT-IR, NMR (1H, 13C and 119Sn) spectroscopy, and X-ray crystallography diffraction analysis. The structure analyses reveals that complex 1 is an 1D infinite chain linked by intermolecular Sn–O bonds, in which the guest benzene molecules are established in the cavity of this helical chain; all the tin atoms of complex 1 are five-coordinated. [ABSTRACT FROM AUTHOR]