LINEAR SI-O-SI FRAGMENTS - STRUCTURE OF 1,1,3,3-TETRAMETHYL-1,3-BIS[(2-OXO-1-PYRROLIDINYL)METHYL]DISILOXANE DIHYDROCHLORIDE AND ANALYSIS OF DISPLACEMENT PARAMETERS

被引：11
|
作者：
SHKLOVER, VE [1 ]
BURGI, HB [1 ]
RASELLI, A [1 ]
ARMBRUSTER, T [1 ]
HUMMEL, W [1 ]
机构：
[1] UNIV BERN,CHEM & MINERAL CRYSTALLOG LAB,CH-3012 BERN,SWITZERLAND
来源：
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE | 1991年 / 47卷
关键词：
D O I：
10.1107/S0108768191002707
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An X-ray diffraction study of 1,1,3,3-tetramethyl-1,3-bis[2-oxo-1-pyrrolidinyl)methyl]disiloxane dihydrochloride, C14H30N2O3Si2(2+).2Cl-, M(r) = 357.1, has been carried out at 120 K. The crystal is monoclinic, space group P2(1)/n, Z = 2; the cell dimensions at 120 K are a = 11.116 (3), b = 8.176 (3), c = 12.138 (6) angstrom, beta = 114.34 (3)-degrees, V = 1005.1 angstrom 3. Weighted least-squares refinement based on 1885 reflections converged at R = 0.031. The crystal is built of linear centrosymmetric disiloxane dications and Cl- anions bonded to the dications by strong O-H...Cl hydrogen bonds. Some aspects of the atomic motion and small deviations from standard geometry in the dication may be interpreted as indicating a weak Si...O interaction. Analysis of the displacement parameters of eight linear disiloxane moieties suggests that disordered arrangements of bent Si-O-Si fragments lead to apparent linearity of the molecules.
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收藏
页码：544 / 548
页数：5
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