Premium
Syntheses, supramolecular networks and Hirshfeld surface and thermal analyses of two new cadmium chloride coordination polymers with an N , O ‐chelating ligand
Author(s) -
Bouchene Rafika,
Bouacida Sofiane
Publication year - 2019
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229618018132
Subject(s) - supramolecular chemistry , carboxylate , chemistry , ligand (biochemistry) , denticity , chloride , crystallography , cadmium , coordination polymer , cadmium chloride , thermal stability , crystal structure , stereochemistry , organic chemistry , biochemistry , receptor
Two new coordination polymers, namely poly[[(3‐aminopyrazin‐4‐ium‐2‐carboxylate‐κ 2 N 1 , O )di‐μ‐chlorido‐cadmium(II)] monohydrate], {[CdCl 2 (C 5 H 5 N 3 O 2 )]·H 2 O} n , (1), and poly[2‐amino‐3‐carboxypyrazin‐1‐ium [(3‐aminopyrazine‐2‐carboxylato‐κ 2 N 1 , O )di‐μ‐chlorido‐cadmium(II)] monohydrate], {(C 5 H 6 N 3 O 2 )[Cd(C 5 H 4 N 3 O 2 )Cl 2 ]·H 2 O} n , (2), have been synthesized from the reaction of cadmium(II) chloride and 3‐aminopyrazine‐2‐carboxylic acid (Hapca) under mild conditions in acidic media. The two coordination polymers have been characterized by single‐crystal X‐ray diffraction and show chloride‐bridged zigzag chains with octahedrally coordinated metal ions, where Hapca acts as a bidentate ligand via the π‐conjugated N atom and a carboxylate O atom. The chains are further interconnected via noncovalent interactions into three‐dimensional supramolecular networks. The dominant H…O and H…Cl interactions for both compounds were quantified using Hirshfeld surface analysis. The thermal stability and topological analysis of the two‐dimensional networks of (1) and (2) are also discussed.