Open AccessDichlorotetrakis[3‐(4‐pyridyl)‐1 H ‐pyrazole]cobalt(II) acetonitrile tetrasolvate: an infinite hydrogen‐bonded network, in an instant
Author(s) -
Davies Graham M.,
Adams Harry,
Ward Michael D.
Publication year - 2005
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270105031732
Subject(s) - pyrazole , acetonitrile , molecule , chemistry , cobalt , hydrogen bond , crystallography , chloride , octahedron , solvent , ion , metal , octahedral molecular geometry , crystal structure , inorganic chemistry , stereochemistry , organic chemistry
Reaction of 3‐(4‐pyridyl)pyrazole (4pypz) with cobalt(II) chloride in acetonitrile affords the title complex, [CoCl 2 (C 8 H 7 N 3 ) 4 ]·4CH 3 CN, within seconds of addition, as purple X‐ray quality crystals. The molecule has C 4 symmetry. The metal ion exhibits a trans ‐N 4 Cl 2 octahedral geometry, with the four 3‐(4‐pyridyl)‐1 H ‐pyrazole ligands coordinating through their pyridyl N‐atom donors; one coordinated chloride ion forms hydrogen bonds with the pyrazole rings from four separate units. This configuration creates an infinite three‐dimensional coordination network containing channels that are filled with acetonitrile solvent molecules.