Research Article: catena-Poly[bis­(4-amino­pyridinium) [[diaqua­manganese(II)]-di-μ-chlorido] dichloride]

Date Published: August 01, 2009

Publisher: International Union of Crystallography

Author(s): Donia Zaouali Zgolli, Habib Boughzala, Ahmed Driss.


Single crystals of the title organic–inorganic hybrid, {(C5H7N2)2[MnCl2(H2O)2]Cl2}n, were synthesized from an ethanol solution containing manganese(II) chloride tetra­hydrate and 4-amino­pyridine under acidic conditions. The asymmetric unit contains a disordered organic cation (occupancies in the ratio 0.72:0.28), a chloride anion and an MnCl(H2O) moiety with the MnII atom located on an inversion center. The structure is built up of infinite chains of edge-sharing [MnCl4(H2O)2] octa­hedra developing parallel to the a axis which are separated by the 4-amino­pyridinium ions and discrete chloride ions. The organic cations occupy the empty space around each inorganic chain. Structural cohesion is organized through N—H⋯Cl and O—H⋯Cl hydrogen bonds, which build up a three-dimensional network.

Partial Text

For general background to organic–inorganic hybride materials, see: Lacroix et al. (1994 ▶); Mitzi (2001 ▶); Calabrese et al. (1991 ▶); Hong et al. (1992 ▶). For related structures, see: Caputo et al. (1976 ▶); Hachuła et al. (2009 ▶); Zeng et al. (2008 ▶).




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