Research Article: Bis(2-amino-1,3-benzothia­zol-3-ium) bis­(7-oxabicyclo­[2.2.1]heptane-2,3-dicarboxyl­ato)cadmate hexa­hydrate

Date Published: June 01, 2012

Publisher: International Union of Crystallography

Author(s): Fan Zhang, Qiu-Yue Lin, Ling-Ling Chen, Jun-Gang Ke.


In the structure of the title complex, (C7H7N2S)2[Cd(C8H8O5)2]·6H2O, the CdII atom is located on an inversion center and is O,O′,O′′-chelated by two symmetry-related 7-oxabicyclo­[2.2.1]heptane-2,3-dicarboxyl­ate ligands in a distorted octa­hedral geometry. The 2-amino­benzothia­zolium cation links with the Cd complex anion via N—H⋯O hydrogen bonding. Extensive O—H⋯O and N—H⋯O hydrogen bonds involving lattice water mol­ecules occur in the crystal structure.

Partial Text

For background to the applications of 7-oxabicyclo­[2,2,1]heptane-2,3-dicarb­oxy­lic anhydride (norcantharidin), see: Yin et al. (2005 ▶). For a manganese(II) analogue, see: Wang et al. (2010a ▶), for a cobalt(II) analogue, see: Wang et al. (2010b ▶), for a nickel(II) analogue, see: Wang et al. (2012 ▶) and for a zinc(II) analogue, see: Zhang et al. (2012 ▶).