1999
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.
NOVOSAD, Josef; K. W. TORNROOS; Marek NEČAS; A. M. Z. SLAWIN; J. D. WOOLLINS et. al.Základní údaje
Originální název
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.
Autoři
NOVOSAD, Josef (203 Česká republika, garant); K. W. TORNROOS; Marek NEČAS (203 Česká republika); A. M. Z. SLAWIN; J. D. WOOLLINS a S. HUSEBYE
Vydání
Polyhedron, Velká Británie, Pergamon-Elsevier Science LTD, 1999, 0277-5387
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10402 Inorganic and nuclear chemistry
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 1.116
Kód RIV
RIV/00216224:14310/99:00001177
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000083330100006
Klíčová slova anglicky
tellurium complexes; basicity and trans influence of ligands
Štítky
Změněno: 25. 6. 2009 12:03, doc. Mgr. Marek Nečas, Ph.D.
Anotace
V originále
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.
Návaznosti
MSM 143100011, záměr |
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