TRI-N-BUTYLTIN 2,6-DIFLUOROBENZOATE, A UNIQUE MACROCYCLIC TETRAMER CONTAINING A 16-MEMBERED SN4C4O8 RING, AND OTHER RELATED-COMPOUNDS

被引：61

作者：

GIELEN, M

ELKHOULFI, A

BIESEMANS, M

KAYSER, F

WILLEM, R

MAHIEU, B

MAES, D

LISGARTEN, JN

WYNS, L

MOREIRA, A

CHATTOPADHAY, TK

PALMER, RA

机构：

[1] FREE UNIV BRUSSELS,HIGH RESOLUT NMR CTR,B-1050 BRUSSELS,BELGIUM

[2] UNIV CATHOLIQUE LOUVAIN,INAN,B-1348 LOUVAIN,BELGIUM

[3] FREE UNIV BRUSSELS,DEPT ULTRASTRUCT,INST MOLEC BIOL,B-1640 SINT GENESIUS,BELGIUM

[4] UNIV LONDON BIRKBECK COLL,DEPT CRYSTALLOG,LONDON WC1E 7HX,ENGLAND

来源：

ORGANOMETALLICS | 1994年 / 13卷 / 07期

关键词：

D O I：

10.1021/om00019a047

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The X-ray crystal structure determination of tri-n-butyltin 2,6-difluorobenzoate, compound 4, revealed the compound to exist as a macrocyclic tetramer with 4BAR symmetry. The five-coordinated tin atoms have distorted trigonal bipyramidal geometries with the three butyl groups occupying equatorial positions and the carboxylate ligands bridging the tin atoms as bidentate ligands in apical positions. Crystals of the compound 2,6-F2C6H3CO2SnBu3, M(r) = 447.12, are tetragonal, space group I4BAR, with Z = 8 in a unit cell of dimensions a = 15.631(3) angstrom, c = 16.882(1) angstrom with R = 0.037 for 3151 unique reflections. In the cyclotetramer, each tin atom exhibits one strong and one weak Sn-O bond. The synthesis and spectral characterization of eight other related tri-n-butyltin carboxylates are presented. As for compound 4, its solution structure is monomeric, with a tetrahedral tin atom.

引用

页码：2849 / 2854

页数：6

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[21] PREPARATION AND INFRARED AND H-1, C-13 AND SN-119 NMR-SPECTRA OF TRIORGANOTIN(IV) DERIVATIVES OF N-FORMYL-L-PHENYLALANINE AND N-FORMYL-L-PHENYLALANYLGLYCINE [J].