catena-Poly[[[4-amino-3,5-bis(pyridin-2-yl)-4H-1,2,4-triazole-κ(2)N(1),N(5)](dicyanamido-κN)copper(II)]-μ2-dicyanamido-κ(2)N:N']: coordination polymer chains linked into a bilayer by hydrogen bonds and π-π stacking interactions.
In the title compound, [Cu(C2N3)2(C12H10N6)]n or [Cu(dca)2(abpt)]n, where abpt is 4-amino-3,5-bis(pyridin-2-yl)-4H-1,2,4-triazole and dca is the dicyanamide anion, the Cu(II) centre is five-coordinate with an approximately square-pyramidal geometry. One of the two dicyanamide ligands is a terminal ligand, but the other one acts as a μ1,5-bridging ligand between pairs of Cu(II) centres, so generating a one-dimensional coordination polymer. A combination of N-H···N and C-H···N hydrogen bonds, augmented by π-π stacking interactions, links the coordination polymer chains into a bilayer structure. Comparisons are made with some related Cu(II) complexes containing dca ligands and heteroaromatic co-ligands.
Département de Technologie, Faculté de Technologie, Université 20 Août 1955-Skikda, BP 26, Route d'El-Hadaiek, Skikda 21000, Algeria.
Zouaoui
Z
Setifi
Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria.
Fatima
F
Setifi
Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V-Agdal, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.
Mohamed
M
Saadi
Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS), Université Constantine 1, Constantine 25000, Algeria.
Djamil Azzeddine
DA
Rouag
School of Chemistry, University of St Andrews, Fife KY16 9ST, Scotland.
Christopher
C
Glidewell
4-amino-3,5-bis(pyridin-2-yl)-4H-1,2,4-triazole; crystal structure; dicyanamide; hydrogen bonding; one-dimensional coordination polymer; polynitrile ligands; square-pyramidal CuII