Knowledge Bank

Rotational transitions in the 6 - 18 GHz range were measured for the organometallic complex cyclopentadienyl-cobalt-dicarbonyl. The spectrum was obtained using a Flygare - Balle type pulsed beam spectrometer. A series of $\Delta J=1$ and some $\Delta J=0$ transitions were obtained for this a-dipole hindered rotor. Splittings of rotational lines due to $\mathrm{<mrow\; data-mjx-texclass="ORD">59</mrow>}$Co quadrupole and hundred rotation effects were observed. The spectrum was analysed using a ``free rotor” basis set. Preliminary analysis indicates an intermediate barrier with $V10$ on the order of 1 THz.