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[Display omitted] In order to know the capacity of the tetrazolium cation [Ph 3 CN 4 ]+ to act as a stabilizing influence in the presence of bulky anions and facilitator to obtain suitable crystals for single-crystal X-ray diffraction studies, four new compounds [Ph 3 CN 4 ] [Ph 2 P(X)NP(Y)Ph 2 ] [X = Y = O (1); X = Y = S (2); X = Y = Se (3); X = S, Y = Se (4)] were synthesized. The compounds were characterized by elemental analysis, IR, FAB+ mass spectrometry, 1H, 13C, and 31P NMR spectroscopy, and the corresponding single-crystal X-ray structural determinations were acquired. In the four compounds, the neighboring [Ph 3 CN 4 ]+ and [Ph 2 P(X)NP(Y)Ph 2 ]- ions are linked by electrostatic interactions, and thus supramolecular polymer chains are generated. To explain the energetic implications of the structural deformations, the interactions and the stabilizer hydrogen bonds, a study was carried out through the Density Functional Theory (DFT). [ABSTRACT FROM AUTHOR]

Six new diorganotin (IV) complexes, [Ph2Sn(Pr-ACDA)2] 1, [Bu2Sn(Pr-ACDA)2] 2, [Ph2Sn(Bz-ACDA)2] 3, [Bu2Sn(Bz-ACDA)2] 4, [Me2Sn(Bz-ACDA)2] 5, [t-Bu2Sn(Bz-ACDA)2] 6 are reported (where ACDA is the 2-amino-1-cyclopentene-1-carbodithioic anion). The diorganotin complexes were prepared from reactions between sodium N-propyl and N-benzyl-2-amino-1-cyclopentene-1-carbodithioate with R2SnCl2 (R=Ph, Bu, Me, tBu) in a 2:1 ratio. All complexes were characterized by elemental analysis, IR, multinuclear NMR (1H, 13C, and 119Sn), FAB+ mass spectrometry and in the case of 2, 3 and 5 by single-crystal X-ray diffraction. Both solution and solid state studies show that dithioacid ligands are coordinated to tin in an aniso-bidentate manner. In all complexes coordination takes place only through the carbodithioate moieties. 119Sn NMR data indicate pentacoordination of tin in solution. The tin coordination geometry, in all three structures is a highly distorted octahedral geometry, where tin is bonded to the four sulfur atoms of the two aniso-bidentate carbodithioate ligands in the equatorial plane and the organic substituents on tin atom in trans-positions. In addition, the crystal structures show the presence of N-H...S hydrogen bonding contacts. [ABSTRACT FROM AUTHOR]

The bis(2-amino-1-cyclopentenecarbodithioate)diethyltin (IV) compound (1) was synthesized by reacting diethyltin (IV) chloride with two equivalents of sodium 2-amino-1-cyclopentenecarbodithioate. The structure of (1) was determined by FT-IR and multinuclear magnetic resonance (1H, 13C, 119Sn) spectroscopy, mass spectrometry and X-ray diffraction methods. The geometry obtained around Tin is a skewed trapezoidal bipyramid with both organic residues in mutual trans-positions. To study the coordination of Tin, theoretical calculations at Hartree–Fock (HF) level were carried out. Results for relativistic, quasi-relativistic and non-relativistic pseudopotentials are reported. The concept of local bond order is defined and applied to quantify the weak local interaction between the thiocarbonyl sulfur atom and Tin. [Copyright &y& Elsevier]

The reaction of benzylferrocenyldithiophosphonate ligands [NH 4 ][S 2 P(OR)(Fc)] [R = Bz ( 1 ), 4-( i Pr)-Bz ( 2 ), 4-( t Bu)-Bz ( 3 ), 4-(Ph)-Bz ( 4 ), 3-(OBz)-Bz ( 5 ); Bz = benzyl, Fc = ferrocenyl] with organotellurium iodides, C 4 H 8 TeI 2 and C 8 H 8 TeI 2 , yielded the corresponding tellurium(IV) dithiophosphonate complexes [C 4 H 8 Te{S 2 P(OR)(Fc)} 2 ] [R = Bz ( 6 ), 4-( i Pr)-Bz ( 7 ), 4-( t Bu)-Bz ( 8 ), 4-(Ph)-Bz ( 9 ), 3-(OBz)-Bz ( 10 )] and [C 8 H 8 Te{S 2 P(OR)(Fc)} 2 ] [R = Bz ( 11 ), 4-( i Pr)-Bz ( 12 ), 4-( t Bu)-Bz ( 13 ), 4-(Ph)-Bz ( 14 ), 3-(OBz)-Bz ( 15 )]. Compounds 6 – 15 were characterized by elemental analyses, infrared, 1 H, 13 C, 31 P and 125 Te NMR spectroscopy and EI mass spectrometry, while complexes 6 , 11 and 14 were also characterized by single-crystal X-ray diffraction studies. The dithiophosphonate ligands display an anisobidentate coordination mode upon interaction with the metal center. The solid-state structures show ferrocenyl groups in the dithiophosphonate ligands adopting trans arrangements. [ABSTRACT FROM AUTHOR]

Abstract: [D(CH2CH2S)2]M(XCH2CH2Y) 1–8 (M=Ge, Sn; D=O, S; X=Y=S, O and X=S, Y=O) spirocycles were synthesized to analyze the influence of the metal center replacement and the donor atom hardness on the strength of the transannular bond and the hypercoordination phenomena. The compounds were characterized by IR, Raman and NMR (1H, 13C and 119Sn) spectroscopy, E.I. mass spectrometry and elemental analysis. The molecular and crystal structures of compounds 3, 4, 6–8 and Ge(SCH2CH2S)2 (9) were obtained by X-ray diffraction analyses. They all exhibit five-coordinate central atoms due to transannular metal coordination (MD) except 4, which displays a dimeric structure formed by the fusion of two five-membered rings resulting in a cyclic-distannoxane unit, {[O(CH2CH2S)2]Sn(SCH2CH2O)}2. The relationship between the nature of the metal center and the differences found between the two germanium and tin series are discussed. [Copyright &y& Elsevier]

Three novel aluminum-containing tin(IV) heterobimetallic sulfides are reported. The reaction of [LAI(SLi)2(THF)2]2 (1) [L = HC(CMeNAr)2, Ar = 2,6-/Pr2C6H3] with Ph2SnCl2, Me2SnCl2, and SnCl4 in THF respectively afforded LAl(μ-S)2SnPh2 (2), LAl(μ-S)2SnMe2 (3), and LAl(μ-S)2Sn(μ-S)2AIL (4) in moderate yields. Compounds 2, 3, and 4 were characterized by elemental analysis, NMR, electron-impact mass spectrometry, and single-crystal X-ray structural analysis. [ABSTRACT FROM AUTHOR]