A [Cr2Ni] coordination polymer: slow relaxation of magnetization in quasi-one-dimensional ferromagnetic chains.

The reaction of [(Cr3O)-O-III(OAc)(6)(H2O)(3)]NO3AcOH with 2-hydroxynaphthaldehyde, 2-amino-isobutyric acid and NiCl26H(2)O in MeOH, under basic and solvothermal conditions, led to the formation of the quasi-1D coordination polymer {[(Cr2NiII)-Ni-III(L)(4)(MeOH)(2)]}(n) (where L = the dianion of the Schiff base between 2-hydroxynaphthaldehyde and 2-amino-isobutyric acid), which behaves as a ferromagnetic chain, displaying slow relaxation of magnetization.