title: A novel three-dimensional coordination polymer constructed from pyrazine and copper(I): poly[[copper(I)-di-mu2-pyrazine-kappa4N:N'] 3,5-dicarboxybenzenesulfonate monohydrate].
abstract: In the title metal-organic framework complex, {[Cu(C(4)H(4)N(2))(2)](C(8)H(5)O(7)S).H(2)O}(n) or {[Cu(I)(pyz)(2)](H(2)SIP).H(2)O}(n) (pyz is pyrazine and H(3)SIP is 5-sulfoisophthalic acid or 3,5-dicarboxybenzenesulfonic acid), the asymmetric unit is composed of one copper(I) center, one whole pyrazine ligand, two half pyrazine ligands lying about inversion centres, one H(2)SIP(-) anion and one lattice water molecule, wherein each Cu(I) atom is in a slightly distorted tetrahedral coordination environment completed by four pyrazine N atoms, with the Cu-N bond lengths in the range 2.017 (3)-2.061 (3) A. The structure features a three-dimensional diamondoid network with one-dimensional channels occupied by H(2)SIP(-) anions and lattice water molecules. Interestingly, the guest-water hydrogen-bonded network is also a diamondoid network, which interpenetrates the metal-pyrazine network.
authors.affiliation: Department of Chemistry and Environmental Science, Zhangzhou Normal University, Zhangzhou, Fujian 363000, People's Republic of China. ghx919@yahoo.com.cn
authors.forename: Hong-Xu
authors.initials: HX
authors.lastname: Guo
authors.forename: Wen
authors.initials: W
authors.lastname: Weng
authors.forename: Xi-Zhong
authors.initials: XZ
authors.lastname: Li
authors.forename: Min
authors.initials: M
authors.lastname: Liang
authors.forename: Cai-Qing
authors.initials: CQ
authors.lastname: Zheng