Synthesis and Coordination of the Cagelike Siloxane Compounds E2{(SiMe2)2O}3 (E = As, Sb, Bi)
Synthesis and Coordination of the Cagelike Siloxane Compounds E2{(SiMe2)2O}3 (E = As, Sb, Bi)
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笼状硅氧烷化合物E2{(SiMe2)2O}3 (E = As, Sb, Bi)的合成与配位
DOI:
10.1002/ejic.201300479
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发表时间:
2013
影响因子:
2.3
通讯作者:
K. Harms
中科院分区:
文献类型:
--
作者:
C. Bimbös;M. Jost;C. von Hänisch;K. Harms
The cage compounds [E2{(SiMe2)2O}3] for E = P, As, Sb, and Bi (1,4,5, and6, respectively) are readily accessible in moderate yields by the reaction of Na3E (for E = P, As, Sb, Bi) or [Li(dme)EH2] (for E = P, As; dme = dimethoxyethane) with 1,3‐dichloro‐1,1,3,3‐tetramethyldisiloxane. These compounds were isolated and characterized by X‐ray crystallographic analysis. The major structural parameters such as the E–Si bond length and the Si–E–Si angles are discussed and compared with those of similar compounds. The small Si–E–Si angles in these compounds are attributable to steric and electronic reasons. Further, the R3M–E[(SiMe2)2O]3E–MR3(M = Al, E = As, Sb; M = Ga, E = Sb) Lewis acid–base adducts were formed as well as the W(CO)5adduct of compound1and a heteroleptic Na[Al(ORF)4] (RF= C(CF3)3) adduct with4to investigate the coordination properties of the cage compounds. The structural changes caused by coordination follow the Haaland model, which gives qualitative information on the adduct stability. The assumptions made by the Haaland model are valid for a versatile set of Lewis acids. To investigate coordination on the inside of the cage, a reaction of4with Li[Al(ORF)4] was performed to yield a new dimeric ligand of the constitution As4[(SiMe2)2O]6.
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影响因子:
2.8
作者:
G. Kollegger;H. Siegl;K. Hassler;K. Gruber
通讯作者:
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DOI:
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发表时间:
2002
期刊:
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1995
期刊:
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1999
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作者:
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通讯作者:
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DOI:
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发表时间:
1993-10-21
影响因子:
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作者:
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通讯作者:
BEACHLEY, OT