\\ Species Tag:        &   42003 & Name:&  NH2CN         
\\ Version:            &       1 & &Cyanamide
\\ Date:       &Jan. 1991        & &
\\ Contributor:&  E. A. Cohen    & &
\\             &                 & &
\\ Lines Listed:       &   13898 & Q(300.0)=&    17902.305
\\ Freq. (GHz) $<$     &    9299 & Q(225.0)=&    11228.962
\\ Max. J:             &      90 & Q(150.0)=&     5730.062
\\ LOGSTR0=            &    -9.0 & Q(75.00)=&     1730.290
\\ LOGSTR1=            &    -8.0 & Q(37.50)=&      506.222
\\ Isotope Corr.:      &     0.0 & Q(18.75)=&      152.887
\\ Egy. (cm$^{-1}$) $>$&     0.0 & Q(9.375)=&       44.101
\\ $\mu_a$ = &4.3269             & A=&312141.88
\\ $\mu_b$ = &                   & B=&10129.758
\\ $\mu_c$ = &-0.9612            & C=&9865.924
\headend
The fit is based on microwave data reported by W. Read {\it et al.}, 1986, 
J. Mol.\ Spect. {\bf 115}, 316, and several far-infrared laser sideband 
measurements near 2.6 THz and far-infrared FT measurements of H. Birk, 1988, 
Thesis, Justus Liebig-Universit at Gie\ss en.  The data include transitions 
with $J\le 70,\; K_a\le 9$.  The partition function includes both inversion
states for $J<90,K_a<17$.  Nitrogen quadrupole splittings are not given.  The 
rotational constants and $\mu_a$ given above are for the lower inversion state.
$\mu_c$ connects the two states.  For $K_a>9$ there is a perturbation from
another vibrational state and the predictions have been truncated at that point.
Frequencies for which the experimental uncertainty is greater than 200 kHz have
not been merged with the calculated frequencies.