The crystal structure of dibutyl-bis(pentamethylenedithiocarbamato)tin(IV)

Abstract

The crystal and molecular structure of SnBu2(pmdtc)2 has been solved by X-ray diffraction methods and refined by a block-diagonal least-squares procedure to R = 0.083 for 895 observed reflections. Monoclinic, space group C2, a = 19.893(6), b = 7.773(8), c = 12.947(8) . 10-10 m, β = 129.07(5)°, Z = 2, C20H38N2S4Sn. Measured and calculated densities are Dm = 1.38(2), Dc = 1.36 Mg m-3. Sn atom, placed on the twofold axes, is coordinated with four S atoms in the distances Sn-S 2.966(6) and 2.476(3) . 10-10 m. Coordination polyhedron is a strongly distorted octahedron. Ligand S2CN is planar.

Structure of di(n-butyl)bis(morpholinocarbodithioato-κ2S,S')tin(IV)

“…The S--Sn--S bond angles deviate from 90 °, ranging between 64.5 (1) ° in the chelate ring and 148.5 (1) ° for the S(2)-- i bond between ligands. The coordination geometry of the SnC2S4 core and the associated bond lengths are remarkably similar to those of Me2Sn(S2CNMe2)2 (Kimura, Yasuoka, Kasai & Kakudo, 1972), Me2Sn-[S2CN(CH2)4]2 (Lockhart, Manders & Schlemper, 1985), (n-Bu)2Sn[S2CN(CH2)5]2 (Lokaj et al, 1986) and (n-Bu)2Sn(S2CNEt2)z (Vrfibel et al, 1992). The S2CN fragment is planar within experimental error, the Sn atom deviating by -0.264 (4)/k from this plane.…”

Bis[N,N-bis(2-hydroxyethyl)dithiocarbamato]dimethyltin(IV)

“…The dithiocarbamates display an intramolecular tin±sulfur interaction of about 3 A Ê , which is only about 0.5 A Ê longer than the covalent tin±sulfur distances. On the other hand, for the trimethyltin derivatives, as the interaction is much longer, the dithiocarbamate group is essentially monodentate (Lokaj et al, 1986).…”

Bis(N-benzyl-N-isopropyldithiocarbamato-κS)di-n-butyltin(IV)

“…For other di-n-butyltin dithiocarbamates, see: Farina et al (2000); Lokaj et al (1986); Menezes et al (2005); Vrá bel et al (1992a,b); Vrá bel & Kellö (1993); Zia-ur-Rehman et al (2006). For a review of the applications and structures of tin dithiocarbamates, see: Tiekink (2008).…”