\\ Species Tag:        &   51001 & Name:&  HCCCN          
\\ Version:            &       3 & & Cyanoacetylene, 
\\ Date:       &  June 1996      & & or 2-Propynenitrile
\\ Contributor:&  H. S. P. M\"uller  & & 
\\             &                 & & 
\\ Lines Listed:       &     139 & Q(300.0)=&     4124.495 
\\ Freq. (GHz) $<$     &    1050 & Q(225.0)=&     3093.536 
\\ Max. J:             &     115 & Q(150.0)=&     2062.526 
\\ LOGSTR0=            &    -7.0 & Q(75.00)=&     1031.679 
\\ LOGSTR1=            &    -4.4 & Q(37.50)=&      516.319 
\\ Isotope Corr.:      &      0. & Q(18.75)=&      258.656 
\\ Egy. (cm$^{-1}$) $>$&     0.0 & Q(9.375)=&      129.830 
\\ $\mu_a$ = & 3.724             & A=& 
\\ $\mu_b$ = &                   & B=& 4549.058
\\ $\mu_c$ = &                   & C=& 
\headend 

	The set of experimental lines used in the calculation was obtained from
the references in W. J. Lafferty and F. J. Lovas, 1978, J. Phys. Chem. Ref.
Data {\bf 7}, 441.
The dipole moment was also given in this reference.
Additional lines were taken from K. M. T. Yamada, A. Moravec, and G. Winnewisser, 
1996, Z. Naturforsch. {\bf 50a}, 1179.

	Quadrupole splittings due to the $^{14}$N nucleus are small. They are 
only considered for $J$ $\le$ 5. For all other $J$ the spin multiplicity was 
considered.