Acta Crystallographica Section C

Crystal Structure Communications

Volume 68, Part 9 (September 2012)


metal-organic compounds



sk3444 scheme

Acta Cryst. (2012). C68, m255-m258    [ doi:10.1107/S0108270112033616 ]

[mu]-4,4'-Bipyridine-[kappa]2N:N'-bis­[tetra­aqua­(4,4'-bipyridine-[kappa]N)diman­gan­ese(II)] bis­(4-amino­benzoate) bis­(perchlorate)-4,4'-bipyridine-water (1/2/4): a supra­molecular system constructed by [pi]-[pi] and hydrogen-bond inter­actions

J. Wang, J. Gao and W. Zhao

Abstract: The title dinuclear manganese compound, [Mn2(C10H8N2)3(H2O)8](C7H6NO2)2(ClO4)2·2C10H8N2·4H2O, (I), has an inversion center located midway between the MnII ions. Each MnII ion has a distorted octa­hedral coordination environment, defined by two mutually cis N atoms from two different 4,4'-bipyridine (4,4'-bipy) ligands and four O atoms from four water mol­ecules. The asymmetric unit contains cationic [Mn(4,4'-bipy)1.5(H2O)4]2+, one isolated 4,4'-bipy mol­ecule, one 4-amino­benzoate ion, one disordered perchlorate ion and two uncoordinated water mol­ecules. In the dinuclear manganese cationic unit, one 4,4'-bipy acts as a bidentate bridging ligand between two MnII ions, while the other two act only as monodentate terminal ligands, giving rise to a `Z-type' [Mn2(4,4'-bipy)3(H2O)8] host unit. These host units are linked to each other via face-to-face [pi]-[pi] stacking inter­actions between monodentate terminal 4,4'-bipy ligands, generating a zigzag chain. The corners of these chains, defined by Mn(OH)4 units, are surrounded by the solvent water mol­ecules and the carboxyl­ate O atoms of the 4-amino­benzoate ions, and all of these are connected to each other via strong O-H...O hydrogen-bond inter­actions, leading to a three-dimensional grid network with a large cavity running along the b axis of the unit cell. The isolated 4,4'-bipy mol­ecules, the 4-amino­benzoate and perchlorate anions and the water mol­ecules are encapsulated in the cavities by numerous hydrogen-bond inter­actions.

Formula: [Mn2(C10H8N2)3(H2O)8](C7H6NO2)2(ClO4)2·2C10H8N2·4H2O


moldisplay filedownload file

MDL mol file (13.8 kbytes)
[ doi:10.1107/S0108270112033616/sk3444Isup3.mol ]
Supplementary material


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