Studies on the boron–nitrogen bond length of the classical donor–acceptor complex H3N–BF3

Abstract
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.