Catena-Poly[diacridinium [zinc(II)-di-?-pyrazine-2,3-dicarboxyl-ato-?N,O:O;O:N,O]].

ABSTRACT: The crystal structure of the title compound, {(C(13)H(10)N)(2)[Zn(C(6)H(2)N(2)O(4))(2)]}(n), consists of polymeric Zn complex anions and discrete acridinium cations. The Zn cation, located on an inversion center, is N,O-chelated by two pyrazine-2,3-dicarboxyl-ate (pyzdc) anions in the basal plane, and is further coordinated by two carboxyl-ate O atoms from adjacent pyzdc anions in the axial directions with a longer Zn-O bond distance, forming a distorted ZnN(2)O(4) coordination geometry. The pyzdc anions bridge the Zn cations, forming polymeric chains running along the crystallographic b axis. The acridinium cations are linked to the complex chains via N-H?O and C-H?O hydrogen bonding. Significant ?-? stacking between parallel acridinium ring systems is observed in the crystal structure, face-to-face distances being 3.311?(3) and 3.267?(4)?Å.

SUBMITTER: Eshtiagh-Hosseini H 

PROVIDER: S-EPMC3007445 | biostudies-literature | 2010 Jul

REPOSITORIES: biostudies-literature