\\ Species Tag:        &   38003 & Name:&  C3D          
\\ Version:            &       1 & & 2-Propynylidyne
\\ Date:       &  Apr. 1995      & & deuterium isotope,
\\ Contributor:&  H. M. Pickett  & & ground $^2\Pi$ state
\\             &  M. L. Delitsky & & and $\nu_4\,^2\Sigma$ state 
\\ Lines Listed:       &    1560 & Q(300.0)=&     3579.9410
\\ Freq. (GHz) $<$     &    2650 & Q(225.0)=&     2661.2498
\\ Max. J:             &      60 & Q(150.0)=&     1736.0584
\\ LOGSTR0=            &    -10. & Q(75.00)=&      814.1121
\\ LOGSTR1=            &    -100 & Q(37.50)=&      361.2093
\\ Isotope Corr.:      &         & Q(18.75)=&      147.2941
\\ Egy. (cm$^{-1}$) $>$&0.0      & Q(9.375)=&       55.9382
\\ $\mu_a$ = & 3.10              & A=& 
\\ $\mu_b$ = &                   & B=& 10097.38 
\\ $\mu_c$ = &                   & C=& 
\headend 
 
The observed lines were measured by S. Yamamoto, S. Saito and M. Ohishi,
1990, Astrophys.\ J. {\bf348}, 363. The dipole has been assumed to be
the same as for the ground state.
	
The $\nu_4=1$ state is only 119 GHz above the ground state and is
strongly coupled with the ground state.  The form of the interaction is
given in J. T. Hougen, 1962, J. Chem.\ Phys.\ {\bf 36}, 519. The dipole
moment for the $\nu_4=1$ state is assumed to be the same as the ground
state. There is a 0.5 Debye b--symmetry dipole moment between the ground state
and $\nu_4=1$.