title: An organic-inorganic hybrid compound containing imidazolium cations and a one-dimensional lithium hexacyanidocobaltate-based anionic framework.
abstract: An organic-inorganic hybrid compound, catena-poly[bis(3H-imidazol-1-ium) [[tetracyanido-κ(4)C-cobalt(III)]-μ-cyanido-κ(2)C:N-[diaqualithium(I)]-μ-cyanido-κ(2)N:C]], {(C3H5N2)2[CoLi(CN)6(H2O)2]}n, was synthesized by the reaction of Li3[Co(CN)6] with imidazolium chloride in aqueous solution. The compound crystallizes in the monoclinic space group C2/c (data collected at 273 K). In the crystal structure, neighbouring [Co(CN)6](3-) anionic units are linked by Li(+) cations through the cyanide groups in a trans mode, forming a one-dimensional zigzag chain structure extending along the c axis. A three-dimensional supramolecular network is formed through hydrogen-bonding interactions and is further stabilized by weak CN···π interactions between the cyanide groups and the imidazolium cations.
authors.affiliation: College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Xiu-Dan
authors.initials: XD
authors.lastname: Shao
authors.affiliation: College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Chun-Hua
authors.initials: CH
authors.lastname: Yu
mesh_terms: D002412:Cations; D003035:Cobalt / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003486:Cyanides / Q000737:chemistry*; D006860:Hydrogen Bonding; D007093:Imidazoles / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D008958:Models, Molecular
chemical_list: D002412:Cations; D056831:Coordination Complexes; D003486:Cyanides; D007093:Imidazoles; D003035:Cobalt; C029899:imidazole; D008094:Lithium
keywords: crystal structure; hydrogen bonding; imidazolium; lithium hexacyanidocobaltate; one-dimensional coordination polymer; organic–inorganic hybrid