The crystal structure of α-dimethyltellurium dichloride

Synthesis, spectroscopic, and structural studies of dimethyltellurium(IV) alkylene and diphenyl dithiophosphates. Crystal structures of and

“…As is the case in the infrared spectrum of Me,TeI, (37), there is no strong feature in the 525 cm-' region, but a weak peak at 526 cm-' can be assigned to the asymmetric Te-C stretch. The observation of near accidental degeneracy of the two Te-C stretches is consistent with the observation of C -T e 4 angles of 96.2(3) and 96.6(3)", respectively for 1 and 4, as found for the Me,TeX, species (38), while the considerable separation between the two Te-S stretching vibrations in both molecules is to be expected for two bonds at nearly 180" to one another. Finally, the features in the spectra of compounds 2, 3, and 5 are sufficiently Can.…”

Synthesis and characterization of dimethyl- and dimethoxyphenylbis(N,N-dialkyldithiocarbamato)tellurium(IV) and chlorodimethyl- and chlorodimethoxyphenyl-(N,N-dialkyldithiocarbamato)tellurium(IV). Crystal structures of Me2Te[S2CNMe2]2 and (p-MeOC6H4)2Te[S2CNMe2]2

“…This is consistent with the average C-S bond length of the terminal or aniso-bonded sulfur atom, being 1.68 l (8) (29). In Me,TeCl,, where the Te-C bond length is 2.09 A (30) the Te-C stretches were both assigned at 544 cm-' (29). Two distinct peaks are seen in this region for compounds 1 to 4, particular in the Raman effect, which are assigned to the symmetric and asymmetric Te-C stretching vibrations, respectively.…”

The crystal structure of SeOCl2.2C5H5N

“…Similar indications of weak chlorine bridges in related compounds have been found in TeC12(CHs)~. (Christofferson et al, 1958), in CuCl~.2 CsHsN (Dunitz, 1957), and in (C6Hs)~JC1 (Khotsianova, 1957). The pyridine rings, which are planar within the limits of error, are not in the equatorial plane through Se, 0 and N but are rotated around the Se-N bonds through angles of 4 ° and 22 ° respectively, both in the same direction.…”