Magnetic anisotropy of a high-spin octanuclear nickel(II) complex with a meso-helicate core.
The octanickel(II) cluster 2b has been synthesized from the novel ferromagnetically coupled dinickel(II) metallacryptand 1b assembled from the m-phenylene-bis(oxamate) ligand. Complex 2b exhibits a dimer-of-tetramers structure, with two oxamate-bridged propeller-shaped tetranuclear units connected through three meta-substituted phenylenediamidate bridges, giving a metallacryptand core of the meso-helicate type. Complex 2b behaves as a ferromagnetically coupled dimer of two S=2 Ni(II)4 units with appreciable magnetic anisotropy.
Pardo
Emilio
E
Departament de Química Inorgànica, ICMOL, Universitat de València, 46100 Burjassot, València, Spain.
Morales-Osorio
Isidoro
I
Julve
Miguel
M
Lloret
Francesc
F
Cano
Joan
J
Ruiz-García
Rafael
R
Pasán
Jorge
J
Ruiz-Pérez
Catalina
C
Ottenwaelder
Xavier
X
Journaux
Yves
Y