Date Published: June 01, 2010
Publisher: International Union of Crystallography
Author(s): Na Wang, Jie Feng, Dong-Hang Wang, Qiu-Yue Lin.
In the title polymer, [Mn(C8H8O5)(H2O)2]n, the MnII atom is in a distorted octahedral coordination mode, binding to the bridging O atom of the bicycloheptane unit, two O atoms from corresponding carboxylate groups, one carboxylate O atom from a symmetry-related bridging ligand and two water O atoms. This arrangement leads to the formation of polymeric chains propagating parallel to . The crystal structure is stabilized by several O—H⋯O hydrogen-bonding interactions involving the coordinated water molecules as donors and the carboxylate O atoms as acceptors.
7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride (norcantharidin) is a lower toxicity anticancer drug, see: Shimi et al. (1982 ▶). For the preparation of disodium demethylcantharate, see: Yin et al. (2003 ▶).