This review describes unique magnetic functionalities observed in cyano-bridged bimetallic assemblies that are
classified as molecule-based magnets. Copper octacyanotungstate (1) has a 3-dimensional network structure. As the temperature
decreases, 1 exhibits a magnetic dimensional crossover from 2-dimensional Heisenberg-type magnetic ordering
to 3-dimensional Heisenberg-type magnetic ordering, which originates from the switching of the dominant superexchange
interaction from the intralayer to the interlayer. Cobalt octacyanoniobate (2) exhibits humidity-sensitive magnetism from
ferromagnetism to antiferromagnetism as the humidity decreases. Copper octacyanotungstate (3), whose crystal structure
differs from 1, displays an alcohol-sensitive magnetism with an extensive change in magnetization. The diverse spatial
configurations and flexible coordination geometries are important to observe such magnetic functionalities because these
features enable bimetallic assemblies to be altered using external stimuli.
Keywords: Alcohol-sensitive magnetism, coordination geometry, cyano-bridged bimetallic assembly, humidity-sensitive magnetism,
long-range magnetic ordering, magnetic dimensional crossover, magnetic heat capacity, molecule-based magnet, octacyano
metalate, structural flexibility, superexchange interaction.
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