Abstract
The unusual magnetic properties of various members of the quasi-1D manganese-porphyrin family are reviewed. Typical members of the family consist of spin S = 2 Mn IIIporphyrin ions alternating with trans-μ 2 -bonded spin s = 1/2 acceptors [C 2(CN) 4] − or [C 4(CN) 6] −. All members exhibit 1D behavior at high temperatures as evidenced by their similarities to predictions for mixed quantumclassical ferrimagnetic chains. Below approximately 50 K, deviations from one-dimensionality are observed due to the effects of interchain interactions. The competition between interchain exchange, single-ion anisotropy, and dipolar interactions are considered when examining the remarkable differences in the low temperature magnetic states of the various compounds.
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