Abstract
Two isostructural CoII and MnII metal-organic frameworks (MOFs), {[M2(tztr)2(H2O)]·CH3CN·H2O}n (M=CoII for 1 and MnII for 2), have been successfully synthesized based on a semi-rigid 3-(tetrazol-5-yl)triazole (H2tztr) ligand. Crystal structure analyses reveal that the complexes possess three-dimensional (3D) frameworks featuring two types of interesting 1D zig-zag and linear metal chains. Magnetic measurements reveal that the special bridge within the double chains of complex 1 provides unexpected spin canting, long-range antiferromagnetic ordering and relaxation dynamics. Whereas the isostructural 2 displays normal antiferromagnetic coupling.
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