STRUCTURAL CHEMISTRY OF ORGANOTIN CARBOXYLATES .7. SYNTHESIS OF TRIORGANOSTANNATE ESTERS OF DICARBOXYLIC-ACIDS - CRYSTAL-STRUCTURE OF DICYCLOHEXYLAMMONIUM 2,6-PYRIDINEDICARBOXYLATOTRIBUTYLSTANNATE

被引:25
作者
NG, SW
DAS, VGK
TIEKINK, ERT
机构
[1] UNIV MALAYA,DEPT CHEM,KUALA LUMPUR 59100,MALAYSIA
[2] UNIV ADELAIDE,DEPT PHYS & INORGAN CHEM,JORDAN LABS,ADELAIDE,SA 5001,AUSTRALIA
基金
澳大利亚研究理事会;
关键词
D O I
10.1016/0022-328X(91)83092-I
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The dicyclohexylammonium 2,6-pyridinedicarboxylatotriorganostannates, [(c-C6H11)2NH2]-[R3Sn((O2C)2C5H3N)], (R = n-C4H9, C6H5) have been prepared from di-c-hexylamine, 2,6-pyridinedi-carboxylic acid and bis(tributyltin)oxide (R = n-C4H9) or triphenyltin hydroxide (R = C6H5). On the basis of Mossbauer quadrupole splittings the tin atoms are assigned five-coordinate geometries. An X-ray analysis of the R = n-butyl compound shows that the structure is polymeric with neighbouring triorganotin centres being linked by dicarboxylate ligands. Each carboxylate moiety is involved in coordination to a Sn atom via one O atom only which has the result that the Sn atoms are five-coordinate and exist in trigonal bipyramidal geometries with the O atoms in axial positions; Sn-O(1) 2.31(1), Sn-O(3') 2.26(1) angstrom and O(1)-Sn-O(3') 173.2(6)-degrees. The pyridine N atom is not involved in coordination to tin.
引用
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页码:111 / 117
页数:7
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