In the title complex, [PtCl4(C14H10N4)], the PtIV atom is six-coordinated in an octahedral configuration by two N atoms from one 2,3-di-2-pyridylpyrazine ligand and four terminal Cl atoms. Intermolecular C—H⋯Cl and C—H⋯N hydrogen bonds stabilize the crystal structure.
Key indicators: single-crystal X-ray study; T = 100 K; mean (C-C) = 0.002 Å; some non-H atoms missing; disorder in solvent or counterion; R factor = 0.037; wR factor = 0.100; data-to-parameter ratio = 22.6.The asymmetric unit of the title compound, {(C 2 H 10 N 2 )-[Cu(C 10 H 2 O 8 )]Á2.5H 2 O} n , contains one cuprate(II)-4benzene-1,2,4,5-tetracarboxylate anion, one ethylenediammonium cation and two and a half water molecules. The Cu atom is four-coordinated by four O atoms from four benzene-1,2,4,5-tetracarboxylate anions. Intra-and intermolecular O-HÁ Á ÁO and N-HÁ Á ÁO hydrogen bonds in the formation of a supramolecular structure. One of the water molecules is disordered equally over two sites.
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