Successive chemical reductions of the heteroleptic complex [(tpy)CrIII(tphz)]3+ (tpy = terpyridine; tphz = tetrapyridophenazine) give rise to the mono- and di-radical redox isomers, [(tpy)CrIII(tphz˙-)]2+ and [(tpy˙-)CrIII(tphz˙-)]+, respectively. As designed, the optimized overlap of the involved magnetic orbitals leads to extremely strong magnetic interactions between the S = 3/2 metal ion and S = 1/2 radical spins, affording well isolated ST = 1 and ST = 1/2 ground states at room temperature.

中文翻译：

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具有扩展的自旋离域和大分子内磁交换的杂多双自由基Cr（iii）配合物。

连续化学还原杂配体[[（tpy）CrIII（tphz）] 3+（tpy =叔吡啶； tphz =四吡啶吩嗪）会产生单和双自由基氧化还原异构体，[（tpy）CrIII（tphz˙-）分别为] 2+和[（tpy˙-）CrIII（tphz˙-）] +。根据设计，所涉及的磁轨道的最佳重叠会导致S = 3/2金属离子与S = 1/2自由基自旋之间极强的磁相互作用，从而在以下位置提供良好隔离的ST = 1和ST = 1/2基态室内温度。