Dichlorido{4-cyclo­hexyl-1-[1-(2-pyridyl-κN)ethyl­idene]thio­semicarbazidato-κ2 N 1,S}methyl­tin(IV). Corrigendum

Corrigendum to Acta Cryst. (2010), E66, m570

{4-Hy­droxy-N′-[(2E,3Z)-4-oxido-4-phenyl­but-3-en-2-yl­idene]benzo­hydra­zidato}diphenyl­tin(IV) methanol monosolvate

Two independent diphenyl­tin mol­ecules and two independent methanol mol­ecules comprise the asymmetric unit of the title compound, [Sn(C6H5)2(C17H14N2O3)]·CH3OH. The Sn atom in each is five-coordinated by a tridentate ligand and the ipso-C atoms of the Sn-bound benzene substituents. The resulting C2N2O donor set defines a coordination geometry that is inter­mediate between trigonal-bipyramidal (TP) and square-pyramidal (SP), with one mol­ecule slightly tending towards TP and the other slightly towards SP. The mol­ecules differ in terms of the relative orientations of the terminal benzene rings [dihedral angles = 45.71 (18) and 53.98 (17)°] and of the Sn-bound benzene substituents [dihedral angles = 59.5 (2) and 45.77 (18)°, respectively]. The most prominent feature of the crystal packing is the formation of four-mol­ecule aggregates via O—H⋯O and O—H⋯N hydrogen bonds, in which the hy­droxy group is connected to a methanol mol­ecule which, in turn, is linked to a non-coordinating N atom. Weak C—H⋯π inter­actions also occur

n-Butyl­dichlorido{4-cyclo­hexyl-1-[phenyl(2-pyridyl-κN)methyl­ene]­thiosemicarbazidato-κ2 N 1,S}tin(IV) chloro­form monosolvate

The monodeprotonated Schiff base ligand in the title com­pound, [Sn(C4H9)(C19H21N4S)Cl2]·CHCl3, N,N′,S-chelates to the Sn atom, which is six-coordinated in an octa­hedral environment. The three coordinating atoms along with the butyl C atom comprise a square plane, above and below which are positioned the Cl atoms. The amino group is a hydrogen-bond donor to a Cl atom of an adjacent mol­ecule, the hydrogen bond giving rise to a helical chain propagating in [010]. The Cl and H atoms of the chloro­form mol­ecule are disordered over two positions in an 0.67:0.33 ratio

1,5-Bis[(E)-1-(2-hydroxyphenyl)ethyl­idene]thiocarbonohydrazide mono­hydrate

In the title compound, C17H18N4O2S·H2O, the thio­urea derivative is almost planar, with an r.m.s. deviation for the non-H atoms of 0.057 Å. The hydroxyl groups lie to the same side of the mol­ecule as the thione S atom, a conformation that allows the formation of intra­molecular O—H⋯S and O—H⋯N hydrogen bonds. In the crystal structure, the thio­urea and water mol­ecules self-assemble into a two-dimensional array by a combination of Owater—H⋯Ohydrox­yl, N—H⋯Owater and Owater—H⋯S hydrogen bonds and C—H⋯π inter­actions

Di-n-but­yl{4-hydr­oxy-N′-[(2-oxido-1-naphthyl-κO)methyl­ene]benzo­hydrazidato-κ2 O,N′}tin(IV)

The deprotonated Schiff base ligand in the title compound, [Sn(C4H9)2(C18H12N2O3)], O,N,O′-chelates to the Sn atom, which is five-coordinated in a cis-C2NO2Sn trigonal-bipyramidal environment. The apical sites are occupied by the O atoms [O—Sn—O = 155.2 (2)°]. The hydr­oxy group is a hydrogen-bond donor to the two-coordinate N atom of an adjacent mol­ecule, the hydrogen-bonding inter­action giving rise to a helical chain running along the c axis. The carbon atoms of the butyl chains are equally disordered over two positions

(2E)-2-(2-Phenyl­hydrazin-1-yl­idene)propanoic acid

The 13 non-H atoms comprising the title compound, C9H10N2O2, are close to planar (r.m.s. deviation = 0.140 Å), with maximum deviations of 0.292 (1) and 0.210 (1) Å to either side of the least-squares plane exhibited by the hy­droxy and carbonyl O atoms, respectively. The observed conformation is stabilized by an intra­molecular O—H⋯N hydrogen bond. The conformation about the N=C double bond [1.2909 (16) Å] is E. The hy­droxy OH group also forms an inter­molecular hydrogen bond to a carbonyl O atom, and the amine H atom similarly forms an N—H⋯O hydrogen bond to a second carbonyl O atom. The result is the formation of a double layer with a flat topology. Layers stack along the a-axis direction connected by C—H⋯π inter­actions

Dichlorido{4-cyclo­hexyl-1-[1-(2-pyridyl-κN)ethyl­idene]thio­semicarbazidato-κ2 N 1,S}methyl­tin(IV)

The monodeprotonated Schiff base ligand in the title compound, [Sn(CH3)(C14H19N4S)Cl2], N,N′,S-chelates to the Sn atom, which is six-coordinated in an octa­hedral environment. The three coordinating atoms along with the methyl C atom comprise a square plane, above and below which are positioned the Cl atoms. The amino group is a hydrogen-bond donor to a Cl atom of an adjacent mol­ecule, the hydrogen bond giving rise to a helical chain extending parallel to [100]

Treatability ofTropical Wood Using Newly Synthesized Organotin(IV) Complexes

The treatability ofthree tropical wood species namely Alstonia scholar is (pulai), Macaranga triloba (mahang) and Hevea brasiliensis (rubberwood) was investigated Wood species were chemically treated with five newly synthesized organotin(lV) complexes using full-cell treatment method This study explored whether tropical wood species could be treated successfully with newly synthesized organotin(IV) complexes as wood preservatives. Ten 19x19x19 mm sized wood cubes of each species were treated with three levels of concentration (0.1, 0.5 and 1 %) ofmono me thyltin (IV) (MMI') andmonophenyltin(IV) (MPT) ofmono series and dimethyltin(IV) (DMT), diphenyltin(IV) (DPT) and dibulyltin(IV) (DBT) ofdiseries organotin(IV) complexes with 2-acetylpyridine-N (4)-cyclohexyl thiosemicarbazone ligand The treated wood species were evaluated by chemical retention values and characterized by FT -IR (Fourier Transform Infrared) spectroscopy analysis. The highest retention (10.59 kg m-1) was found in Alstonia scholaris treated with 1% DMT complexes and the lowest retention (0.47 kg m -') was found inHevea brasiliensis treated with OJ % DMT complexes. FT -IR spectra oftreated wood showed new absorption bands in the range of 594-606 and 441-457 em-I due to Sn-C and Sn-N bonds, respectively. A newly formed absorption band at range 549-569 cm-1 due to Sn-O band was also observed in the treated wood sample spectra. Chemical retention and FTIR spectra suggest tropical wood species are treatable with newly synthesized organotin(IV) complexes as wood preservatives

n-Butyldichlorido{4-cyclohexyl-1-[1-(pyridin 2-yl-jN)ethylidene]thiosemicarbazidato-j2N1,S}tin(IV)

Two independent mol-ecules comprise the asymmetric unit in the title compound, [Sn(C₄H₉)(C₁₄H₁₉N₄S)Cl₂]. In each mol-ecule, the Sn(IV) atom exists within a distorted octa-hedral geometry defined by the N,N',S-tridentate mono-deprotonated Schiff base ligand, two mutually trans Cl atoms, and the α-C atom of the n-butyl group; the latter is trans to the azo-N atom. The greatest distortion from the ideal geometry is found in the nominally trans angle formed by the S and pyridyl-N atoms at Sn [151.72 (7) and 152.04 (7)°, respectively]. In the crystal, mol-ecules are consolidated into a three-dimensional architecture by a combination of N-H⋯Cl, C-H⋯π and π-π inter-actions [inter-centroid distances = 3.6718 (19) and 3.675 (2) Å]

Synthesis, Characterization And Biological Studies Of Organotin(Iv) Complexes Of Thiosemicarbazone Ligand Derived From Pyruvic Acid: X-Ray Crystal Structure Of [Me2sn(Pat)]

Six organotin(IV) complexes of pyruvic acid thiosemicarbazone ligand [H2PAT, (1)] with general formula [RSnCln-1 PAT)] [R = Me2, n = 1 (2); R = Bu2, n = 1 (3); R = Ph2, n = 1 (4); R = Me, n = 2 (5); R = Bu, n = 2 (6); R = Ph, n = 2 (7)] were synthesized by direct reaction of thiosemicarbazone ligand (1), base and organotin(IV) chloride(s) in absolute methanol under N2 atmosphere. These organotin(IV) complexes were characterized by elemental analyses, molar conductivity, UV-visible, FTIR, 1 H and 13C NMR spectral studies. Among them, dimethyltin(IV) complex (2) was also characterized by X-ray crystallography diffraction analyses. The cytotoxicity of the ligand (1) as well as its organotin(IV) complexes (2-7) were determined by Artemia salina, shrimp test lethality bioassay