Synthesis and crystal structures of new complexes of di- and tribenzyltin 2-amino-1-cyclopentene-1-carbodithioates
摘要:
Treatment of dibenzyltin dichloride with 1 equiv. of 2-amino-1-cyclopentene-1-carbodithioic acid (ACDA) gave Bz(2)SnCl(ACDA) (1) that contains five coordinate tin. Reaction of 2 equiv. of ammonium 2-amino-1-cyclopentene-1-carbodithioic acid (AACD) with Bz(2)SnCl(2) and then recrystallization from THF produced Bz(2)Sn(ACDA)(2)center dot THF 2 in which the coordination geometry around the Sn is highly distorted from octahedral. Bz(3)Sn(ACDA) (3) was obtained from reaction of BZ(3)SnCl with 1 equiv. of AACD. The crystal structure of 3 indicates a Sn-S' interaction [3.0823(5) angstrom] that distorts the tin coordination geometry from that of an ideal tetrahedron. In 1-3 the tin atom is also coordinated to one carbon atom of each benzyl group. The products were characterized by IR and NMR (H-1, C-13, Sn-119) spectroscopy and elemental analysis. (c) 2005 Elsevier B.V. All rights reserved.