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A New System in Organooxotin Cluster Chemistry Incorporating Inorganic and Organic Spacers between Two Ladders Each Containing Five Tin Atoms
Author(s) -
Zheng GuoLi,
Ma JianFang,
Yang Jin,
Li YinYan,
Hao XiangRong
Publication year - 2004
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200400202
Subject(s) - chemistry , tin , trigonal bipyramidal molecular geometry , stoichiometry , hydrolysis , cluster (spacecraft) , crystallography , stereochemistry , medicinal chemistry , crystal structure , organic chemistry , computer science , programming language
Hydrolysis of dibenzyltin dichloride in ethanol has been found to give an unprecedented carbonate anion (CO 3 2− )‐bridged double‐ladder organooxotin cluster, [(R 2 SnO) 3 (R 2 SnOH) 2 (CO 3 )] 2 ( 1 , R = C 6 H 5 CH 2 ), with five tin atoms in each ladder. With the aim of obtaining organooxotin clusters with large cavities suitable for host–guest chemistry, we used 1,1′‐ferrocenedicarboxylic acid (H 2 L a ) and hexanedioic acid (H 2 L b ) to replace the carbonate anions (CO 3 2− ), and thereby clusters [(R 2 SnO) 3 (R 2 SnOH) 2 L a ] 2 ( 2 ) and [(R 2 SnO) 3 (R 2 SnOH) 2 L b ] 2 ( 3 ) were obtained. When 1 was treated with benzoic acid (HL c ) in different stoichiometric ratios (1:4, 1:10), ladder cluster (R 2 SnO) 3 (R 2 SnOH) 2 (L c ) 2 ( 4 ) and drum cluster [RSn(O)L c ] 6 ( 5 ) were obtained. Through the hydrolysis of Cy 2 SnCl 2 (Cy = C 6 H 11 ) and (C 6 H 5 CH 2 ) 2 SnCl 2 , two interesting ethanolate‐modified clusters [Cy 2 (C 2 H 5 O)SnOSn(C 2 H 5 O)Cy 2 ] 2 ( 6 ) and [(R 2 SnO) 3 (R 2 SnOH)(R 2 SnOC 2 H 5 )(CO 3 )] 2 ( 7 ) were obtained. All the tin atoms in these ladder clusters are five‐coordinate surrounded by two alkyl groups and three O atoms, and have distorted trigonal‐bipyramidal coordination environments with two carbon atoms and one O atom in the equatorial positions and two O atoms in the axial positions. The structures of all these compounds have been established by single‐crystal X‐ray diffraction analyses.