Acta Cryst. (2014). E70, m180
[ doi:10.1107/S1600536814006758 ]
Abstract: The title salt, [K(C18H36N2O6)][Co(CO)4], is an example of a classical carbonylmetalate. The asymmetric unit contains one cation and one tetrahedral anion, both in general positions. Based on comparison of the four carbonyl C-O bond lengths and C-Co-C angles, the anion is unperturbed by the cation, which is normal for an alkali metal fully encased by a cryptand cage.
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