title: Poly[[aqua-bis-[μ(2)-6-(pyridine-3-car-box-amido)-naphthalene-2-carboxyl-ato]copper(II)] dihydrate].
abstract: The title compound, {[Cu(C(17)H(11)N(2)O(3))(2)(H(2)O)]·2H(2)O}(n), is a two-dimensional polymer. The Cu(2+) ion lies on the crystallographic twofold axis. The coordination sphere of the Cu(2+) ion can be described as a distorted square pyramid. All of the H atoms in the amide group and lattice water mol-ecules participate in O-H⋯O or N-H⋯O hydrogen bonding to strengthen the two-dimensioal framework of the polymer.
authors.affiliation: Department of Chemistry (BK21), Sungkyunkwan University, Natural Science Campus, Suwon 440-746,  Republic of Korea.
authors.forename: Yun-Sung
authors.initials: YS
authors.lastname: Song
authors.forename: Soon W
authors.initials: SW
authors.lastname: Lee