Et3NH+Co(CO)4- contains a short N–H…Co contact, which provides the closest approach between the anion and cation. Accurate structural characterization by neutron diffraction at 15 K shows the N–H…Co interaction to be linear with a long N–H bond length and a relatively short Co···H separation (Co···H = 2.613 (2)Å, N–H = 1.054 (1) Å, N–H···Co = 180.0°). This evidence is consistent with the presence of a three-center-four-electron hydrogen-bond-like N–H···Co interaction, though it does not rule out simple electrostatic attraction as the principal driving force behind association of the Et3NH+ and Co(CO)4- Ions.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry