Bimetallic MOFs (H3O)x[Cu(MF6)(pyrazine)2]·(4 - x)H2O (M = V4+, x = 0; M = Ga3+, x = 1): co-existence of ordered and disordered quantum spins in the V4+ system.
Manson JLDepartment of Chemistry and Biochemistry, Eastern Washington University, Cheney, WA 99004, USA. jmanson@ewu.edu.
Schlueter JAMaterials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA.
Garrett KEDepartment of Chemistry and Biochemistry, Eastern Washington University, Cheney, WA 99004, USA. jmanson@ewu.edu.
Goddard PADepartment of Physics, University of Warwick, Coventry CV4 7AL, UK.
English
The title compounds are bimetallic MOFs containing [Cu(pyz)2]2+ square lattices linked by MF6n- octahedra. In each, only the Cu2+ spins exhibit long-range magnetic order below 3.5 K (M = V4+) and 2.6 K (M = Ga3+). The V4+ spins remain disordered down to 0.5 K.