Acta Crystallographica Section C

Crystal Structure Communications

Volume 65, Part 4 (April 2009)

metal-organic compounds

Acta Cryst. (2009). C65, m156-m159 [ doi:10.1107/S0108270109004442 ]

A monoclinic pseudopolymorph of manganese squarate dihydrate, Mn(-C₄O₄)(H₂O)₂, built from cubic units

E. Gavilan and N. Audebrand

Abstract: The structure of poly[[[hexaaquatrimanganese(II)]-tri- [mu] -squarato] monohydrate], {[Mn₃(C₄O₄)₃(H₂O)₆]·H₂O}_n, synthesized hydrothermally, consists of a new three-dimensional framework described by secondary building units (SBUs) containing two MnO₆ 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 ( $3\over4$ , $1\over4$ , 0) and 4c ( $1\over4$ , $1\over4$ , 0)] are located on inversion centres and the third Mn atom is on a twofold axis (4e; 0, y, $1\over4$ ). This report illustrates the concept of the SBU and the flexibility of the squarate spacer in the design of new porous topologies.

Formula: [Mn₃(C₄O₄)₃(H₂O)₆]·H₂O


	Portable Document Format (PDF) file [ doi:10.1107/S0108270109004442/dn3102fig3sup3.pdf ] Supplementary material

	Portable Document Format (PDF) file [ doi:10.1107/S0108270109004442/dn3102fig4sup4.pdf ] Supplementary material

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