A solvatochromic dinuclear copper(II) metallocycle effectively traps tetrahydrofuran, diethyl ether and pentane significantly above their boiling points. X-ray crystallography, EPR and UV-visible spectroscopy were used to delineate an empirical relationship between the guest-induced structural perturbation of the metallocycle, the ligand field splitting parameter Δ (ν_max), and the EPR g-values of the inclusion compounds, thereby elucidating the solvatochromic mechanism.

中文翻译：

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超分子溶剂致变色：从晶体学，光谱学和理论上的机理见解†

溶剂变色的双核铜（II）金属环有效地捕集了明显高于其沸点的四氢呋喃，乙醚和戊烷。X射线晶体学，EPR和紫外-可见光谱法用于描绘金属环的客体-诱导的结构扰动之间的经验关系，配体场分裂参数Δ（ν_最大值），以及EPR克包合物的-值，从而阐明溶剂变色机理。