Purification and X-ray crystal structure of bis[tris(trimethylsilyl)-methyl]diarsene

Purification and X-ray crystal structure of bis[tris(trimethylsilyl)-methyl]diarsene
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双[三(三甲基硅基)-甲基]二砷的纯化及X射线晶体结构

DOI:
10.1039/dt9850000383
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发表时间:
1985
期刊:
Journal of The Chemical Society-dalton Transactions
影响因子:
--
通讯作者:
M. Pakulski
M. Pakulski
中科院分区:
--
文献类型:
--
作者:
A. Cowley;N. C. Norman;M. Pakulski

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(Me3Si)3CAsAsC(SiMe3)3 的晶体和分子结构已通过X射线衍射测定。双砷结晶属于 P(no. 2) 空间群,a= 9.151 (3),b= 12.682(2),c= 15.537(4)A,α= 70.07(2),β= 89.61(2),γ= 87.88(2)°,Z= 2。该化合物的同构结构为(Me3Si)3CPPC(SiMe3)3 并采用跨平面构象,AsAs = 2.245(1), 2.243(1)A 和 As–As–C = 106.2(2), 106.4(2)° 在两个晶体学独立的分子中。 REE′R′[EE′N 或 P, RR′C6H2But3–2,4,6 结构趋势; EE′P、RR′C(SiMe3)3 或 NBut(SiMe3); EE′As、RR′C(SiMe3)3 或 RC6H2But3–2,4,6,R′CH(SiMe3)2;讨论了 EP,E'As, RC6H2But3–2,4,6,R'CH(SiMe3)2]。
The crystal and molecular structure of (Me3Si)3CAsAsC(SiMe3)3 has been determined by X-ray diffraction. The diarsene crystallizes in space group P(no. 2), with a= 9.151 (3), b= 12.682(2), c= 15.537(4)A, α= 70.07(2), β= 89.61(2), γ= 87.88(2)°, and Z= 2. The compound is isostructural with (Me3Si)3CPPC(SiMe3)3 and adopts a trans-planar conformation with AsAs = 2.245(1), 2.243(1)A and As–As–C = 106.2(2), 106.4(2)° In two crystallographically independent molecules. Trends in the structures of REE′R′[EE′N or P, RR′C6H2But3–2,4,6; EE′P, RR′C(SiMe3)3 or NBut(SiMe3); EE′As, RR′C(SiMe3)3 or RC6H2But3–2,4,6,R′CH(SiMe3)2; EP,E′As, RC6H2But3–2,4,6,R′CH(SiMe3)2] are discussed.