Heteroleptic pyrimidine-2-olate and 4,4[prime or minute]-bipyridine copper(II) layered metal-organic frameworks with swelling properties.
One-pot reaction of CuX2 salts (X = NO3, Cl, ClO4, AcO, SO(4)/2), 2-Hydroxypyrimidine hydrochloride (2-Hpymo.HCl) and 4,4'-bipyridine (4,4'-bpy), in H2O : ethanol : ammonia (20 : 10 : 5) solution, leads to isomorphous extended layered materials of type [Cu3(mu-OH)2(mu-Cl)2(mu-2-pymo)(mu-4,4'-bpy)3]nXn.mH2O (X = NO3 (1a), Cl (1b), ClO4 (1c), AcO (1d), SO(4)/2 (1e)). The single crystal X-ray crystallographic analysis performed on species exemplifies that it is built by 2D [Cu3(mu-OH)2(mu-Cl)2(mu-2-pymo)(mu-4,4'-bpy)3]n(n+) cationic sheets, which pack in a staggered fashion, with non coordinated NO3- anions and crystallisation water molecules included in the interlayer voids. XRPD studies performed on the species show a swelling response along the crystallographic a axis concomitant to aliphatic alcohol inclusion. Additionally, we have also studied the magnetic properties of , which show that its magnetic behaviour is dominated by the strong antiferromagnetic interactions taking place in the Cu3(mu-OH)2(mu-Cl)2 trinuclear cores.
Barea
Elisa
E
Departamento de Quimica Inorganica, Universidad de Granada, Av. Fuentenueva S/N, E-18071 Granada, Spain.
Quiros
Miguel
M
Navarro
Jorge A R
JA
Salas
Juan M
JM