title: A coordination polymer consisting of two different one-dimensional copper(II) chains.
abstract: The title compound, catena-poly[[[diaqua(methanol-κO)copper(II)]-μ-N-(4-methylpyrimidin-2-yl-κN(1))pyrazin-2-amine-κ(2)N(1):N(4)] [[aqua(aqua/methanol-κO)(perchlorato-κO)copper(II)]-μ-N-(4-methylpyrimidin-2-yl-κN(1))pyrazin-2-amine-κ(2)N(1):N(4)] tris(perchlorate) methanol monosolvate 1.419-hydrate], {[Cu(C9H9N5)(CH3OH)(H2O)2][Cu(C9H9N5)(ClO4)(CH3OH)0.581(H2O)1.419](ClO4)3·CH3OH·1.419H2O}n, is a one-dimensional straight-chain polymer of N-(4-methylpyrimidin-2-yl)pyrazin-2-amine (L) with Cu(ClO4)2. The complex consists of two crystallographically independent one-dimensional chains in which the Cu(II) atoms exhibit two different octahedral coordination geometries. The L ligand coordinates to two Cu(II) centres in a tridentate manner, with the pyrazine ring acting as a bridge linking the Cu(II) coordination units and building an infinite one-dimensional chain. Extensive hydrogen bonding among perchlorate anions, water molecules and L ligands results in three-dimensional networks.
authors.affiliation: School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Wu
authors.affiliation: School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, People's Republic of China.
authors.forename: Wen Zhen
authors.initials: WZ
authors.lastname: Wang
authors.affiliation: Institute of Chemical Problems, Azerbaijan Academy of Sciences, Baku, Azerbaijan.
authors.forename: Rayyat Huseyn
authors.initials: RH
authors.lastname: Ismayilov
authors.affiliation: Instrumentation Centre, National Taiwan University, Taipei 106, Taiwan.
authors.forename: Gene Hsiang
authors.initials: GH
authors.lastname: Lee
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
authors.forename: Shie Ming
authors.initials: SM
authors.lastname: Peng
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008024:Ligands; D010472:Perchlorates / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D008024:Ligands; D010472:Perchlorates; D011108:Polymers; D003300:Copper; C494474:perchlorate
keywords: coordination polymer; copper(II) complex; crystal structure