Diaquabis[4-(4H-1,2,4-triazol-4-yl)benzoato-kappa2O,O']cobalt(II), and the cadmium(II) and copper(II) analogues: new self-complementary hydrogen-bond donor/acceptor modules for designing hydrogen-bonded frameworks.
In the isostructural title complexes, [M(C(9)H(6)N(3)O(2))(2)(H(2)O)(2)] [M = Co(II), (I), Cd(II), (II), and Cu(II), (III); the metal centres reside on a twofold axis in the space group C2/c for (I) and (II)], the metal centres are surrounded by four O atoms from two O,O'-bidentate carboxylate groups and by two trans-coordinated aqua ligands, forming a distorted octahedral environment. The molecules possess four hydrogen-bond donor (two aqua ligands) and four hydrogen-bond acceptor sites (two triazole groups), and aggregate by self-association, forming two-dimensional hydrogen-bonded frameworks [via O-H...N interactions; O...N = 2.749 (3)-2.872 (3) A]. The layers are parallel and are tightly packed with short interlayer distances of 4.93, 4.95 and 5.01 A for (I), (II) and (III), respectively.
Lukashuk
Liliana V
LV
Inorganic Chemistry Department, Kiev University, Volodimirska Str. 64, Kiev 01033, Ukraine.
Lysenko
Andrey B
AB
Rusanov
Eduard B
EB
Chernega
Alexander N
AN
Domasevitch
Konstantin V
KV