title: Isostructural organic-inorganic hybrid compounds: triethylcholine tribromidocadmate and triethylcholine tribromidomercurate.
abstract: In order to search for new anionic architectures and develop useful organic-inorganic hybrid materials in halometallate systems, two new crystalline organic-inorganic hybrid compounds have been prepared, i.e. catena-poly[triethyl(2-hydroxyethyl)azanium [[bromidocadmate(II)]-di-μ-bromido]], {(C8H20NO)[CdBr3]}n, (1), and catena-poly[triethyl(2-hydroxyethyl)azanium [[bromidomercurate(II)]-di-μ-bromido]], {(C8H20NO)[HgBr3]}n, (2), and the structures determined by X-ray diffraction analysis. The compounds are isostructural, crystallizing in the space group P21/n. The metal centres are five-coordinated by bromide anions, giving a slightly distorted trigonal-bipyramidal geometry. The crystal structures consist of one-dimensional edge-sharing chains of MBr5 trigonal bipyramids, between which triethylcholine counter-cations are intercalated. O-H···Br hydrogen-bonding interactions are present between the cations and anions.
authors.affiliation: College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Dong-Yan
authors.initials: DY
authors.lastname: Wang
authors.affiliation: College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Xue-Li
authors.initials: XL
authors.lastname: Hou
authors.affiliation: College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Xue-Nan
authors.initials: XN
authors.lastname: Li
mesh_terms: D002794:Choline / Q000031:analogs & derivatives* / Q000737:chemistry; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D007287:Inorganic Chemicals; D008628:Mercury / Q000737:chemistry*; D015394:Molecular Structure; D009930:Organic Chemicals
chemical_list: D056831:Coordination Complexes; D007287:Inorganic Chemicals; D009930:Organic Chemicals; C100239:triethylcholine; D008628:Mercury; D002794:Choline
keywords: crystal structure; one-dimensional coordination polymers; organic–inorganic hybrid complexes; pentacoordinated cadmium compound; pentacoordinated mercury compound; triethylcholine