STRUCTURE OF THE 1-ETHYL-3-METHYL-1-ALUMINA-INDANE DIMER, [C2H5(O-C6H4CH(CH3)CH2)AL]2

被引:12
作者
BRAUER, DJ [1 ]
KRUGER, C [1 ]
机构
[1] MAX PLANCK INST COAL RES,D-4330 MULHEIM,FED REP GER
来源
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 1979年 / 34卷 / 09期
关键词
Al-Aryl-Al-Bridging; X-ray;
D O I
10.1515/znb-1979-0927
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The molecular structure of the l-ethyl-3-methyl-l-alumina-indane dimer has been determined from single crystal X-ray data collected by counter methods. The compound crystallizes in the monoclinic space group C52h-P21/c with a = 14.621(2), b — 8.3967(3), c = 8.7516(5) Å, ß = 107.998(4)°, Z = 2 and dc = 1.15 gem-3. Refinement converged with an R value of 0.037 for the 1836 reflections with I > 3σ(I). The crystals are composed of discrete dimeric molecules possessing crystallographic [FORMULA OMMITED] (Ci) symmetry. Each Al atom bonds to an ethyl C atom, 1.964(2) Å, as well as to alkyl 1.974(2) and aryl 2.168(1) Å C atoms of one monomer and, surprisingly, to the aryl C atom 2.104(1) Å, of the inversion related monomer. The Al-Al′ distance in the dimers is 2.6639(7) Å. © 1979, Walter de Gruyter. All rights reserved.
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页码:1293 / 1297
页数:5
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