1.
Acta Crystallogr Sect E Struct Rep Online
; 68(Pt 6): m829, 2012 Jun 01.
Article
in English
| MEDLINE
| ID: mdl-22719369
ABSTRACT
The asymmetric unit of the title compound, [Mn(C(6)H(6)N(4))(2)(H(2)O)(2)](C(8)H(4)O(4)), contains one-half each of the centrosymmetric cation and anion. The Mn(II) atom is coordinated by four N atoms [Mn-N = 2.2168â (14) and 2.2407â (14)â Å] from two 2,2'-biimidazole ligands and two water mol-ecules [Mn-O = 2.2521â (14)â Å] in a distorted octa-hedral geometry. Inter-molecular N-Hâ¯O and O-Hâ¯O hydrogen bonds consol-idate the crystal packing, which also exhibits π-π inter-actions between five-membered rings, with a centroid-centroid distance of 3.409â (2)â Å.