The crystal structure of triphenyl(N,N-diisopropyldithiocarbamato)tellurium(IV), an unusual dimeric structure

Monooxytellurane(IV) Derivatives ([10−Te−4(C3O)]). Syntheses and Molecular Structure of Triaryltelluronium Carboxylate Compounds

“…Thus, differences between the structures of 2a and 2b may be due to steric factors arising from the size of the substituent influencing the carboxyl group and the influence of crystal packing forces. Such behavior has been reported for the triphenyltelluronium methylxanthate derivatives by Singh et al They have suggested that the structural difference between triphenyltelluronium methylxanthate (as a dimer form) and isobutylxanthate depended on the steric influence of the alkyl group of the xanthate system.…”

Synthesis, characterization and structural studies of dithiocarbamate derivatives of 2,2,6,6-tetramethyl-1-oxa-4,4-diiodo-4-tellura-2,6-disilacyclohexane,O[Si(CH3)2CH2]2TeI(dtc)

“…Tables 2 and 3. The coordination geometry of the tellurium center in the three compounds can be described as the sawhorse structure typical of Te(IV) compounds in which the lone-pair of electrons is apparently stereochemically active and occupies an equatorial position in a distorted trigonal bipyramid [1][2][3][4][5][6][7][8][9][10][11][12] (1) and 2.91(1) Å), with a shortening of the Te-S bond; this behavior has been observed in Me 2 TeI[S 2 -…”

“…The great structural diversity of organotellurium (IV) derivatives with 1,1-dithio ligands [1], such as dithiocarbamates [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], dithiophosphates [4,[14][15][16][17], dithiophosphinates [11,12] and xanthates [13,14,18] are greatly influenced by the nature of the ligands, and little changes in aspects, such as the size of the ligand's bite, the strong tendency to form inter-and intra-molecular interactions, and the presence of the apparently stereochemically active lone pair of electrons could influence the coordination geometry. As an extension, of our previous studies on organotellurium (IV) derivatives of dithiocarbamate ligands, we present herein the results of the preparation and spectroscopic characterization of five new monosubstituted bicyclic complexes O [Si(CH 3 (5), such compounds contain, in addition to a cyclic dithiocarbamate ligand an interesting silicon containing organometallic tellurium sixmembered heterocycle ring.…”

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

“…Thus a variety of stable compounds of ~~~~~k i~ compoun~s of tellurium(~~) containing the dithioorganotellurium(1V) with 1,l-dithio ligands such as N,N-dialkyl carbamate entity such as Te(S,CNR,), have been reported in dithiocarbamates (5)(6)(7)(8)(9)(10)(11)(12)(13)(14), 0-alkyl dithiocarbonates (xanthates) the literature ( 1 4 ) , whereas the analogous xanthates and l2 ¶ 15-17) and 0 3 0 -d i a l k~l dithiophosphates (11-14, dithiophosphates are unknown. hi^ presumably reflects a 17-22) have been described in the literature.…”