A two-dimensional Cd^II coordination polymer: poly[di-aqua-[μ₃-5,6-bis-(pyridin-2-yl)pyrazine-2,3-di-carboxyl-ato-κ⁵O²:O³:O³,N⁴,N⁵]cadmium].

ABSTRACT: The reaction of 5,6-bis-(pyridin-2-yl)pyrazine-2,3-di-carb-oxy-lic acid with cadmium dichloride leads to the formation of the title two-dimensional coordination polymer, [Cd(C₁₆H₈N₄O₄)(H₂O)₂] _n . The metal atom is sevenfold coordinated by one pyrazine and one pyridine N atom, two water O atoms, and by two carboxyl-ate O atoms, one of which bridges two Cd^II atoms to form a Cd₂O₂ unit situated about a centre of inversion. Hence, the ligand coordinates to the cadmium atom in an N,N',O-tridentate and an O-monodentate manner. Within the polymer network, there are a number of O-H⋯O hydrogen bonds present, involving the water mol-ecules and the carboxyl-

SUBMITTER: Alfonso M 

PROVIDER: S-EPMC5120711 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature