Studies on the boron–nitrogen bond length of the classical donor–acceptor complex H ₃ N–BF ₃

Quantum Mechanical Calculations at correlated levels using different basis sets predict that the B–N bond length of H3N–BF3 is 1.68 ± 0.02 Å; the previously reported value of 1.59 ± 0.03 Å. Which is based on microwave spectroscopic investigations, is probably too short.