A rotational study of the molecular complex tert-butanol···NH3

The rotational spectra of tert-butanol···14NH3 and tert-butanol···15NH3 have been investigated and assigned by pulsed jet Fourier transform microwave spectroscopy. According to the values of the 14N quadrupole coupling constants, the complex (where NH3 acts as a proton acceptor) adopts a configuration with an almost linear O-H···N hydrogen bond. The NH3 moiety undergoes a nearly free rotation. © 2008 Elsevier B.V.