A monoclinic pseudopolymorph of manganese squarate dihydrate, Mn(mu-C(4)O(4))(H(2)O)(2), built from cubic units.
The structure of poly[[[hexaaquatrimanganese(II)]-tri-mu-squarato] monohydrate], {[Mn(3)(C(4)O(4))(3)(H(2)O)(6)].H(2)O}(n), synthesized hydrothermally, consists of a new three-dimensional framework described by secondary building units (SBUs) containing two MnO(6) octahedra and three squarate groups in a cube-shaped arrangement. In the asymmetric unit, one squarate group is located around an inversion centre (4a; 0, 0, 0), two Mn atoms [4d (3/4, 1/4, 0) and 4c (1/4, 1/4, 0)] are located on inversion centres and the third Mn atom is on a twofold axis (4e; 0, y, 1/4). This report illustrates the concept of the SBU and the flexibility of the squarate spacer in the design of new porous topologies.
Laboratoire Sciences Chimiques de Rennes (CNRS, UMR 6226), Université de Rennes 1, Avenue du Général Leclerc, 35042 Rennes Cedex, France.
Elisabeth
E
Gavilan
Nathalie
N
Audebrand