Chemistry Department, Monash University, Clayton, Victoria 3168, Australia
Abstract:
The microwave spectrum of tellurophene, C4H4Te, has been recorded between 8 and 27 GHz. The rotational constants obtained from least-squares fitting of low-J lines are: Figures in parentheses are uncertainties in last place of decimal (95% confidence limit). Corresponding inertial defects are 0.094 (7), 0.095 (6) and 0.097 (10) amu A2 respectively, indicating the essential planarity of the molecule.Stark shift measurements correspond to a dipole moment of μa = 0.619 x 10?30 C m (0.186 D).An approximate structure, based on bond lengths of CC and CH bonds adopted from related molecules, implies that r (Te - C) = 205.5 pm and ? C (5) TeC (2) = 82.53°.
