\\ Species Tag:        &   51006 & Name:&  HCCNC-v6  
\\ Version:            &       1 & & Ethynyl-isocyanide,
\\ Date:       &  Jan. 1995      & & $\nu_6$ vibrational state
\\ Contributor:&  M. L. Delitsky & &
\\             &  H. M. Pickett  & &
\\ Lines Listed:       &     291 & Q(300.0)=&    3775.7021
\\ Freq. (GHz) $<$     &  983.83 & Q(225.0)=&    2832.7507
\\ Max. J:             &      99 & Q(150.0)=&    1888.7322
\\ LOGSTR0=            &   -10.0 & Q(75.00)=&     944.7917
\\ LOGSTR1=            &  -100.0 & Q(37.50)=&     472.8781
\\ Isotope Corr.:      &   0.0   & Q(18.75)=&     236.9363
\\ Egy. (cm$^{-1}$) $>$&  424.0  & Q(9.375)=&     118.9708 
\\ $\mu_a$ = & 2.93              & A=&        
\\ $\mu_b$ = &                   & B=&4978.500
\\ $\mu_c$ = &                   & C=&          
\headend

The observed frequency measurements were taken from A. Guarnieri, R.
Hinze, M. Kr\"uger and H. Zerbe-Foese, 1992, J. Mol. Spect. {\bf 156},
39. The $\nu_6$ vibration is a low lying excited bending state at 424
cm$^{-1}$. It should be noted that the $\nu_6$ is an $l$ doubled state.

The dipole moment was assumed to be the same as for the ground state. M.
Kr\"uger, H. Dreizler, D. Preugschat and D. Lentz, 1991, Angew. Chem.
Int. Ed. Engl. {\bf 30}, 1644.