title: (2.2.2-Cryptand)potassium tetra-carbonyl-cobaltate(-I).
abstract: The title salt, [K(C18H36N2O6)][Co(CO)4], is an example of a classical carbonyl-metalate. 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.
authors.affiliation: Department of Chemistry, 207 Pleasant Street SE, University of Minnesota, Minneapolis, MN 55455, USA.
authors.forename: William W
authors.initials: WW
authors.lastname: Brennessel
authors.affiliation: Department of Chemistry, 207 Pleasant Street SE, University of Minnesota, Minneapolis, MN 55455, USA.
authors.forename: John E
authors.initials: JE
authors.lastname: Ellis