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@article{212151,
author = {Novosad, Josef and Tornroos, K. W. and Nečas, Marek and Slawin, A. M. Z. and Woollins, J. D. and Husebye, S.},
article_location = {Velká Británie},
article_number = {22},
keywords = {tellurium complexes; basicity and trans influence of ligands},
language = {eng},
issn = {0277-5387},
journal = {Polyhedron},
title = {Synthesis and Characterization of [Te2(-Cl)2{(SPPh2)2N}2], [(4-MeOC6H4TeCl3)2 {-Ph2P(S)CH2CH2P(S)Ph2}] and Te2(-S2PPh2)2 Representing Novel Types of Tellurium Complexes.},
volume = {18},
year = {1999}
}
TY - JOUR
ID - 212151
AU - Novosad, Josef - Tornroos, K. W. - Nečas, Marek - Slawin, A. M. Z. - Woollins, J. D. - Husebye, S.
PY - 1999
TI - Synthesis and Characterization of [Te2(-Cl)2{(SPPh2)2N}2], [(4-MeOC6H4TeCl3)2 {-Ph2P(S)CH2CH2P(S)Ph2}] and Te2(-S2PPh2)2 Representing Novel Types of Tellurium Complexes.
JF - Polyhedron
VL - 18
IS - 22
SP - 2861
EP - 2861
PB - Pergamon-Elsevier Science LTD
SN - 02775387
KW - tellurium complexes
KW - basicity and trans influence of ligands
N2 - The three title compounds have been synthesized and their structures determined by X-ray crystallography. [Te-2(mu-Cl)(2){(SPPh2)(2)N}(2)], 1, is a dinuclear square planar Te(II) complex where each Te atom is coordinated to the two sulfur atoms of the bidentate dithiolate ligand and to the two bridging chloride ligands. The Te-S bond lengths are 2.4980(8) and 2.5054(8) Angstrom, while the Te-Cl bond lengths are 2.9065(9) and 2.9230(9) Angstrom. In [(4-MeOC6H4TeCl3)(2){mu-Ph2P(S)CH2CH2P(S)Ph-2}], 2, the dithio ligand is neutral and adds a molecule of [4-MeOC6H4TeCl3] at each sulfur atom, thus bridging the two Te(IV) atoms. The coordination of both tellurium atoms is psi-octahedral with the anisyl group and a lone pair of electrons in axial positions. The Te-S bonds, 2.7747(6) and 2.8198(5) Angstrom, are surprisingly weak while the Te-Cl bonds lie in the range 2.4247(5) to 2.5343(6) Angstrom, those trans to Te-S being shortest. [Te-2(mu-Ph2PS2)(2)], 3, is a binuclear Te(I) complex, mainly held together by a Te-Te bond of 2.7298(5) Angstrom. Both anisobidentate diphenyldithiophosphinate ligands bridge the two tellurium atoms. The resulting coordination around each tellurium is best described as T-shaped with the Te-Te bond along the stem. In the asymmetric near linear S-Te-S system, the short Te-S bonds are 2.487(2) and 2.495(2) Angstrom while the long bonds are 2.947(2) and 3.033(2) Angstrom, respectively. The strongly different trans influences of the dithio ligands of 1 and 2 are discussed and it is suggested that they are dependent upon the basicity of the sulfur atoms.
ER -
NOVOSAD, Josef, K. W. TORNROOS, Marek NEČAS, A. M. Z. SLAWIN, J. D. WOOLLINS a S. HUSEBYE. Synthesis and Characterization of [Te2(-Cl)2$\{$(SPPh2)2N$\}$2], [(4-MeOC6H4TeCl3)2 $\{$-Ph2P(S)CH2CH2P(S)Ph2$\}$] and Te2(-S2PPh2)2 Representing Novel Types of Tellurium Complexes. \textit{Polyhedron}. Velká Británie: Pergamon-Elsevier Science LTD, 1999, roč.~18, č.~22, s.~2861-2865. ISSN~0277-5387.
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