\\ Species Tag: & 50008 & Name:& C3N \\ Version: & 1 & & Cyanoethynyl, \\ Date: & Apr. 1995 & & X $^2 \Sigma ^+$ \\ Contributor:& M. L. Delitsky & & \\ & H. M. Pickett & & \\ Lines Listed: & 1349 & Q(300.0)=& 7582.4199 \\ Freq. (GHz) $<$ & 986.5 & Q(225.0)=& 5688.9037 \\ Max. J: & 99 & Q(150.0)=& 3793.0183 \\ LOGSTR0= & -8.0 & Q(75.00)=& 1897.3279 \\ LOGSTR1= & -100 & Q(37.50)=& 949.6199 \\ Isotope Corr.: & & Q(18.75)=& 475.8020 \\ Egy. (cm$^{-1}$) $>$& 0.0 & Q(9.375)=& 238.9055 \\ $\mu_a$ = & 2.200 & A=& \\ $\mu_b$ = & & B=& 4947.6 \\ $\mu_c$ = & & C=& \headend The observed lines are from: M. Guelin {\it et al.}, 1982, Astron. Astrophys. {\bf 109}, 23. C. A. Gottlieb {\it et al.}, 1983, Astrophys.J. {\bf 275}, 916. The dipole moment is from M. Guelin {\it et al.}, above.