Abstract
The reaction of btzmp (1,2-bis(tetrazol-1-yl)-2-methylpropane) with Fe(ClO4)2 generates a 1D polymeric species, [Fe(µ-btzmp)2(btzmp)2](ClO4)2, showing a steep spin transition (T1/2 = 136 K and T1/2 = 133 K) with a 3 K thermal hysteresis. The crystal structure at 100 and 200 K reveals that, in contrast to other bistetrazole based spin-transition
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