The structures and bonding of several Al metalloid clusters have been analyzed with the aid of density functional theory calculations. These clusters include [Al-7{N(SiMe3)(2)}(6)](-) (1), [Al-12{N(SiMe3)(2)}(8)](-) (2), [Al22Br20.12THF] (3) [Al-14{N(SiMe3)(2)}(6)I-6](2-) (4), Al-14(mu(8)-Si)Cp-6(*) (5), [(AlEt)(8)(mu(4)-CCH2Ph)(5)(mu(4)-H)] (6), [(AlMe)(8)(mu(4)-CCH2Ph)(5)(mu(4)-Cequivalent toCph)] (7) and [(AlMe)(7)(mu(4)-CCH2Me)(4)(mu(2)-H)(2)] (8). In this paper, an attempt has been made to illustrate the relationship between the observed geometry and electron counts for these metalloid clusters. (C) 2002 Elsevier Science Ltd. All rights reserved. [References: 41]
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