Calcium-bis{[去吧(trimethylsilyl) silyl] tellanid·4 THF:合成、spektroskopische特性和结构

IF 0.8 4区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR Zeitschrift Fur Naturforschung Section B-A Journal of Chemical Sciences Pub Date : 1992-01-01 DOI:10.18419/OPUS-1299

G. Becker, K. Klinkhammer, W. Schwarz, M. Westerhausen, T. Hildenbrand

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引用次数: 0

摘要

用二聚体钙二[二(三甲基硅基)酰胺]在甲苯中金属化三(三甲基硅基)硅基碲化钙二{[三(三甲基硅基)硅基]碲化钙}·4THF，然后由四氢呋喃重结晶。该化合物具有显著的1.25 Te{1H}-NMR共振高场位移(-2204 ppm vs. Me2Te)。x射线结构测定(三线，pI;Z = 1;A = 1042.6(2)， b = 995.7(2)， c = 1379.6(3) pm;α= 90.06(2)， β= 92.76(2)，)， γ= 94.03(2)°(-100”C)，表明钙原子(Ca-Te 319;Ca-O 236和241 pm)。两个[三(三甲基硅基)硅基}-碲化物配体处于反位;Ca-Te-Si角加宽至129°。

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Calcium-bis{[tris(trimethylsilyl)silyl]tellanid} · 4 THF : Synthese, spektroskopische Charakterisierung und Struktur

Calcium bis {[tris(trimethylsilyl)silyl]tellanide} · 4THF is obtained by metallation of tris(trimethylsilyl)silyl)tellane using dimeric calcium bis[bis(trimethylsilyl)amide] in toluene, followed by recrystallisation from tetrahydrofuran. The compound is characterized by a remarkable highfield shift of the 1 2.5 Te{1H}-NMR resonance (-2204 ppm vs. Me2Te). The X-ray structure determination (triclinie, pI; Z = 1; a = 1042.6(2), b = 995.7(2), c = 1379.6(3) pm; α= 90.06(2), β= 92.76(2),), γ= 94.03(2)° at -100 "C) shows a distorted octahedral coordination sphere of the calcium atom (Ca-Te 319; Ca-O 236 and 241 pm). The two [tris(trimetbylsilyl)silyl}-tellanide ligands are in a trans position; the angle Ca-Te-Si is widened to 129°.

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来源期刊

Zeitschrift Fur Naturforschung Section B-A Journal of Chemical Sciences 化学-无机化学与核化学

CiteScore

1.80

自引率

12.50%

发文量

期刊介绍： Zeitschrift fuer Naturforschung B (ZNB) publishes novel research in all areas of inorganic chemistry, organic chemistry, and analytical chemistry. In particular, the journal focuses on solid state chemistry, coordination chemistry, main group element chemistry, synthetic organic chemistry, natural product chemistry and, to a lesser extent, on analytical chemistry. For more than 65 years Zeitschrift fuer Naturforschung B has been open to contributions from all fields of experimental and theoretical chemistry. Zeitschrift fuer Naturforschung B publishes 12 issues per volume/year. Sometimes double issues occur. Topics Solid state chemistry Coordination chemistry Main group element chemistry Organic chemistry Natural product chemistry.