Abstract
Porous host crystals of the metallocycle [Cu2(1,3-bis(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene)2Cl4]·2CH3OH are permeable to a series of small organic guests despite their lack of permanent channels. It is inferred from single crystal X-ray diffraction that transport of the guest molecules is facilitated by "flapping" of the imidazolyl rings.
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