Crowning Glory: Twelve μ2-sulfur donors are located above and below an Ni6 ring to form a double crown cluster (see picture). This [12]metallacrown-6 nickel(II) cluster was synthesized by spontaneous self-assembly from 2-sulfanylethanol, carbon bisulfide, NaOH, and NiSO4. The hydroxy groups of 2-sulfanylethanol form strong intermolecular hydrogen-bonding interactions, and thus help in sustaining the metallacrown complex.
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Jian et al. (2003) studied this question.
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