Structure of bis(dipropyldithiocarbamato)tellurium(II)

Main Group Dithiocarbamate Complexes

“…Homoleptic dithiocarbamate complexes of both tellurium(II) (215,293,294,296,(302)(303)(304)(305)(306)(307)(308)(309)(310)(311) and tellurium(IV) (293, 294, 296, 302, 304-306, 309, 310, 312-315) are well known. The molecular structures of the bis(dithiocarbamate)tellurium(II) compounds, [Te(S 2 CNR 2 ) 2 ], are analogous to those of the corresponding Se compounds: The Te atom exhibits a planar trapezoidal coordination geometry, with the two dithiocarbamate ligands bound in an anisobidentate fashion [TeÀ ÀS(ave) ¼ 2.52 (short) and 2.83 A ˚(long)].…”

“…Formation of nonhomoleptic complexes by substitution of one of the dithiocarbamate ligands in the [Te(S 2 CNR 2 ) 2 ] complexes is generally difficult because of the strength of the TeÀ ÀS bonds and is often only feasible when electron-withdrawing substituents, such as CH 2 CH 2 OH, are attached to the dithiocarbamate. However, improvements in synthetic methodologies have enabled organyl, halide and pseudo-halide substituted analogues to be prepared (309,(323)(324)(325)(326)(327)(328)(329)(330)(331)(332).…”

“…The complex [Te 2 I 3 (S 2 CNi-Pr 2 ) 3 ] is a 1:1 adduct of the Te(IV) complex [TeI 2 (S 2 CNi-Pr 2 ) 2 ] and the Te(II) complex [TeI(S 2 CNi-Pr 2 )], in which the two Te units are bridged by an iodine atom (Fig. 32) (332). There is a weak Te .…”

Stereochemical Aspects of Tellurium Complexes with Sulfur Ligands: Molecular Compounds and Supramolecular Associations

“…The compound has been obtained by allowing elemental tellurium to react with iodine in dichloromethane and then adding a solution ofTeIV(S2CNPri2)4 in the same solvent. 119 The unique features of the structure of this compound (Figure 39) (i.e., Te4 in Figure 39). The TeiS^IA atoms form a mean plane (maximum deviation 0.023 A); the Tei-Te2 axis makes an angle of 57.9°with this plane, thus distorting the pentagon.…”

Structure of bis(diisopropyldithiocarbamato)tellurium(II)

“…The structure determination was carried out to study the effect of the bulkiness of the ligand and the effect of the tellurium lone pairs of electrons on the stereochemistry. Other structures of Te(ligand)2 complexes which have been reported are those of bis(O-ethylxanthato)tellurium(II) (Husebye, 1967), bis(morpholinyldithiocarbamato)tellurium(II) (Husebye, 1970) (Rout, Seshasayee, Radha & Aravamudan, 1983) and bis(dipropyldithiocarbamato)tellurium(II) (Ganesh, Seshasayee, Chidambaram, Aravamudan, Goubitz & Schenk, 1989).…”