title: Poly[bis-[8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-dihydro-pyrido[2,3-d]pyrimidine-6-carboxyl-ato]cadmium].
abstract: The title layered coordination polymer, [Cd(C(14)H(16)N(5)O(3))(2)](n) or [Cd(ppa)(2)](n), where ppa is 8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-dihydro-pyrido[2,3-d]pyrimidine-6-carboxyl-ate, was syn-thesized under hydro-thermal conditions. The Cd(II) atom (site symmetry 2) exhibits a distorted cis-CdN(2)O(4) octa-hedral geometry defined by two N-monodentate and two O,O'-bidentate ppa monoanions. The extended two-dimensional structure resulting from the bridging ppa species is a grid lying parallel to (001). An N-H⋯O hydrogen bond helps to establish the crystal packing.
authors: Jun
authors: J
authors: Gao
authors: Jing
authors: J
authors: Gao
authors: Bo
authors: B
authors: Pei
authors: Jing
authors: J
authors: Huang
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