A twist in the tale: A racemic mixture of the chiral [Co(dien)2]Cl3 complex has been used as a template in preparing an open-framework zinc phosphate with multidirectional helical channels, consisting of alternate ZnO4 and PO4 tetrahedra. The framework contains 12-membered ring channels along the [100] direction, within which [Co(dien)2]3+ ions are located. Each channel is enclosed by chiral interpenetrating double helices (see picture; dien=diethylenetriamine).
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Wang et al. (2003) studied this question.
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