(2.2.2-cryptand)potassium tetracarbonylcobaltate(-I)

William W. Brennessel, John E. Ellis

Research output: Contribution to journalArticlepeer-review


The title salt, [K(C18H36N2O 6)][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.

Original languageEnglish (US)
Pages (from-to)m180
JournalActa Crystallographica Section E: Structure Reports Online
Issue number5
StatePublished - May 2014


  • R factor = 0.040
  • T = 173 K
  • data-to-parameter ratio = 15.5
  • mean σ(C-C) = 0.004 A°
  • single-crystal X-ray study
  • wR factor = 0.093


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