Crystal and molecular structure of polyunsaturated macrobicyclic carbosilane C24H38Si6期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Crystal and molecular structure of polyunsaturated macrobicyclic carbosilane C24H38Si6

Authors:	A. A. Korlyukov M. G. Voronkov L. V. Zhilitskaya E. E. Istomina M. Yu. Antipin

Affiliation:	(1) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow;(2) A. E. Favorskii Institute of Chemistry, Siberian Division, Russian Academy of Sciences, Irkutsk e

Abstract:	The crystal and molecular structure of the polyunsaturated macrocyclic carbosilane 1,4,4,7,7,10,13, 13,16,16-decamethyl-1,4,7,10,13,16-hexasilabicyclo-[8.8.2]-eucosa-5,14-diene-2,8,11,17-tetrain containing SiC(sp), SiC(sp ²), and SiC(sp ₃) endocyclic bonds was studied by XRD. The two strained 12-membered rings of this molecule have different (trans-zigzag and staggered) conformations. The lengths of the endocyclic bonds SiC(sp) are 1.821–1.852 Å, SiC(sp ²) 1.855–1.874 Å, and SiC(sp ³) 1.847–1.853 Å. The structure of the rings was solved by direct methods and refined by the full-matrix least-squares method. Calculations were carried out with SHELXTL PLUS 5.1 software.

Keywords:	polyunsaturated macrocyclic carbosilanes molecular structure SiC(sp) SiC(sp ²) SiC(sp ³) endocyclic bond lengths
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