A new mixed-ligand coordination polymer: crystal structure and protective effect on viral myocarditis via regulating inflammatory response in vivo

2020 ◽  
Vol 50 (12) ◽  
pp. 1234-1238
Author(s):  
Lei Wang ◽  
Yang Liu ◽  
Jiabing Zhang ◽  
Yunfeng Xia
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Inflammatory Response ◽  
Protective Effect ◽  
Viral Myocarditis ◽  
Mixed Ligand ◽  
Polymer Crystal ◽  
Ligand Coordination

scholarly journals Disorder in the anionic part ofcatena-poly[[(pyrazine-2-carboxylato)copper(II)]-μ-pyrazine-2-carboxylato]

2012 ◽  
Vol 68 (4) ◽  
pp. m498-m499
Author(s):  
Joselyn Albanez ◽  
Iván Brito ◽  
Alejandro Cárdenas ◽  
Matías López-Rodríguez
Keyword(s):  
Crystal Structure ◽  
Carboxylic Acid ◽  
Coordination Polymer ◽  
Mixed Ligand ◽  
Polymeric Chain ◽  
Solvothermal Reaction ◽  
Carboxylate Group ◽  
Ligand Coordination ◽  
The Difference ◽  
Anionic Part

The title compound, [Cu(C5H3N2O2)0.88(C6H4NO2)1.12]n, is characterized by disorder of the anion, resulting from a statistical occupation in a 0.44 (3):0.56 (3) ratio of pyrazine-2-carboxylate and pyridine-2-carboxylate. The compound was isolated during attempts to synthesize a mixed-ligand coordination polymer by solvothermal reaction between copper(II) nitrate and equimolar mixtures of pyrazine-2-carboxylic acid and pyridine-2-carboxylic acid in a mixture of water and EtOH. The difference in the two components of the compound is due to substitutional disorder of a CH group for one of the N atoms of the pyrazine ring which share the same site in the structure. In the crystal structure, the CuIIatom lies on an inversion centre and is six-coordinated in a distorted N2O4geometry. The carboxylate group carbonyl O atoms are weakly coordinated to an equivalent CuIIatom that is translated one unit cell in thea-axis direction, thus forming a polymeric chain through carboxylate bridges.

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