The donor-acceptor complexes (CH3)3N-BF3 and (CH3)3N-B(CH3)3 have been reinvestigated at high resolution by rotational spectroscopy in a supersonic jet. Nuclear hyperfine structure resulting from both nitrogen and boron has been resolved and quadrupole coupling constants have been obtained. The results for both complexes indicate that approximately 0.4 electrons are transferred away from the (CH3)3N moiety upon formation of the dative bond.
Bibliographical noteFunding Information:
This work was supported by the National Science Foundation , Grant Nos. CHE 0845290 and 9730844 .
- Donor-acceptor complex
- Electron transfer
- Hyperfine structure
- Trimethylamine-borane complex
- Trimethylamine-boron trifluoride complex