A series of structurally characterised μ-cyanodicopper(II) cryptates shows moderately strong antiferromagnetic interaction in the range −2J
= 150–200 cm−1, at the high end of the observed range for such assemblies. The lowest magnetic exchange coupling parameter is displayed where there is slight bending of the M–CN–M assembly, enforced by the constraints of cryptate encapsulation. Thermally accessible triplet EPR spectra are observed with zero-field splittings of the order of 0.13–0.14 cm−1, confirming collinear ground-state dz2 orbitals for Cu(II), consistent with their trigonal-bipyramidal coordination geometries.
一系列具有结构特征的 μ-cyanodicopper(II) 隐晶酸盐在 -2J = 150-200 cm-1 的范围内显示出中等强度的反
铁磁相互作用,处于此类集合体观测范围的高端。在隐色酸酯封装的限制下,M-CN-M 组装出现轻微弯曲时,磁交换耦合参数最低。观察到的热敏三重 EPR 光谱的零场分裂为 0.13-0.14 cm-1,证实了 Cu(II)的共线基态 dz2 轨道,这与它们的三叉双锥配位几何形状一致。