2-Acetyl-pyridinium 3-amino-2-chloro-pyridinium tetra-chloridocobaltate(II).

ABSTRACT: In the title complex, (C(5)H(6)ClN(2))(C(7)H(8)NO)[CoCl(4)], the Co(II) ions are tetra-hedrally coordinated. The crystal structure is built from hydrogen-bonded centrosymmetric tetra-mers of tetra-chloridocobaltate(II) dianions and 3-amino-2-chloro-pyridinium cations, additionally strengthened by significant ?-? stacking of pyridinium rings [interplanar distance 3.389?(3)?Å]. The tetra-mers are linked by N-H?Cl hydrogen bonds into chains; the second kind of cations, viz. 2-acetyl-pyridinium, are connected by N-H?Cl hydrogen bonds to both sides of the chain. The Co-Cl bond lengths in the dianion correlate with the number of hydrogen bonds accepted by the Cl atom. An intramolecular C-H?Cl interaction is also present.

SUBMITTER: Adamski A 

PROVIDER: S-EPMC2968359 | biostudies-literature | 2009 Jan

REPOSITORIES: biostudies-literature