title: A new polymorph of bis[2,6-bis(1H-benzimidazol-2-yl-κN3)pyridinido-κN]zinc(II).
abstract: The title compound, [Zn(C(19)H(12)N(5))(2)], crystallizes in the tetragonal space group P4(3)2(1)2, with the monomer residing on a twofold axis. The imidazole N-bound H atoms are disordered over the two positions, with refined occupancies of 0.59 (3) and 0.41 (3). The strong similarities to, and slight differences from, a reported P4(2)2(1)2 polymorph which has a 50% smaller unit-cell volume [Harvey, Baggio, Muñoz & Baggio (2003). Acta Cryst. C59, m283-m285], to which the present structure bears a group-subgroup relationship, are discussed.
authors.affiliation: Universidad Nacional de la Patagonia, Sede Trelew, 9100 Trelew, Chubut, Argentina.
authors.forename: Miguel Angel
authors.initials: MA
authors.lastname: Harvey
authors.forename: Sebastián
authors.initials: S
authors.lastname: Suarez
authors.forename: Fabio
authors.initials: F
authors.lastname: Doctorovich
authors.forename: Ricardo
authors.initials: R
authors.lastname: Baggio
mesh_terms: D003460:Crystallization; D007477:Ions / Q000737:chemistry*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D007477:Ions; D009942:Organometallic Compounds; C579151:bis(2,6-bis(1H-benzimidazol-2-yl-kappaN3)pyridinido-kappaN)zinc(II); D015032:Zinc