CRYSTAL-STRUCTURE OF DICYCLOHEXYLAMMONIUM 2-MERCAPTOBENZOATOTRIPHENYLSTANNATE

Dicyclohexylammonium 2-mercaptobenzoatotriphenylstannate crystallizes in the monoclinic P2(I)/n space group (a=11.171(2), b=17.891(5), c=17. 190(3)Angstrom; beta=105.08(2)degrees). The asymmetric unit consists o f a [(cyclo-C6H11)(2)NH2](+) cation hydrogen bonded (N...01=2.803(4)An gstrom) to the stannate anion; the [(C6H5)(3)Sn]+ group is covalently linked to the sulfur end (Sn-S=2.427(1)Angstrom) of the [SC6H4C(02)01] (2-) moiety. The tin is five-coordinate in a distorted cis-trigonal bi pyramidal environment in which the carboxyl 02 atom (Sn-02=2.704(3) An gstrom) and the ipso-carbon of a phenyl ring occupy apical positions ( 02-Sn-Cl=168.7(1)degrees); the Sn-C-axial bond (Sn-Cl=2.179(3)Angstrom ) is longer than the Sn-C-equatorial bonds (2.136(4), 2.139(3)Angstrom ). The stannate anion is linked to an adjacent cation (N'...01=2.880(4 )Angstrom to form a tightly held three-dimensional network structure.