Extending distannoxane double ladders using rigid spacers:: A double ladder with eight chiral tin atoms -: and a twist!

被引：43
作者：
Dakternieks, D [1 ]
Duthie, A
Zobel, B
Jurkschat, K
Schürmann, M
Tiekink, ERT
机构：
[1] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore
[2] Deakin Univ, Ctr Chiral & Mol Technol, Geelong, Vic 3217, Australia
[3] Univ Dortmund, Lehrstuhl Anorgan Chem 2, D-44221 Dortmund, Germany
[4] Univ Adelaide, Dept Chem, Adelaide, SA 5005, Australia
来源：
ORGANOMETALLICS | 2002年 / 21卷 / 04期
关键词：
D O I：
10.1021/om0105627
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The new bulky silicon-containing ditin precursor p-(RCl2SnCH2SiMe2)(2)C6H4 (R = CH2-SiMe3 (4)) has been synthesized and further reacted to form a unique double ladder {[p-(R(Cl)SnCH2SiMe2)(2)C6H4]O}(4) (6). The two layers within 6 are twisted with respect to one another, resulting in a helical motif and a total absence of molecular symmetry so that there are eight chiral tin atoms within the system. The structure is compared to the double ladder {[m-(R(Cl)SnCH2CH2)(2)C6H4]O}(4) (11), which was prepared from the less, sterically demanding ditin precursor m-(RCl2SnCH2CH2)(2)C6H4 (10). The two layers within 11 are parallel, and the molecule contains only two kinds of tin atom.
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页码：647 / 652
页数：6
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