Ferromagnetic coupling and thermochromism in [Ni(rac-CTH)(mu1,1-N3)2Cu(N3)2], the first end-on azido-bridged bimetallic complex.
Reaction of [Ni(rac-CTH)(ClO(4))(2)](rac-CTH = rac-5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane) with NaN(3) and Cu(NO(3))(2).3H(2)O produces the binuclear complex [Ni(rac-CTH)(mu(1,1)-N(3))(2)Cu(N(3))(2)] 1, which represents the first example of an end-on bridged bimetallic complex; 1 exhibits intramolecular ferromagnetic exchange coupling and thermochromism, this latter being a consequence of the intermolecular interaction at low temperature.
Suarez-Varela
Jose
J
Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071, Granada, Spain.
Maimoun
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IB
Colacio
Enrique
E