\\ Version: & 3 & & Propane
\\ Date: & Feb. 2015 & & ground state,$\nu_{14}$,$\nu_{27}$
\\ Contributor:& B. J. Drouin & &AA, EE, EA, AE
\\ & & &
\\ Lines Listed: & 183835 & Q(300.0)=& 787623
\\ Freq. (GHz) $<$ & 3000 & Q(225.0)=& 360964
\\ Max. J: & 99 & Q(150.0)=& 145145
\\ LOGSTR0= & -12.5 & Q(75.00)=& 41859
\\ LOGSTR1= & -10.5 & Q(37.50)=& 14493
\\ Isotope Corr.: & 0.0 & Q(18.75)=& 5138
\\ Egy. (cm$^{-1}$) $>$& 0.0 & Q(9.375)=& 1828
\\ $\mu_a$ = & & A=&29207.46690
\\ $\mu_b$ = & 0.0848 & B=& 8445.96861
\\ $\mu_c$ = & & C=& 7459.00313
\headend
The data set used is compiled from D.R. Lide, J. Chem. Phys., 33 (1960) 1514-1518;
G. Bestmann, W. Lalowski, and H. Dreizler, Z. Naturforsch. 40a, 271 (1985); and
G. Bestmann, H. Dreizler, J.M. Vacherand, D. Boucher, B.P. van Eijck, J.
Demaison, Z. Naturforsch. 40a, 508 (1985), and B.J. Drouin, J.C. Pearson, A. Walters,
V. Lattanzi, J. Mol. Spec. \emph{in press}.
The v designations separate vibrational levels and torsional sub-levels as follows:
\begin{table}[h]
\begin{tabular*}{\hsize}{@{\extracolsep{\fill}}c|c|c|c}
& gs & $\nu_{14}$ & $\nu_{27}$\\
\hline
AA & 0 & 6 & 12 \\
EE & 1,2 & 7,8 & 13,14 \\
EA & 3,4 & 9,10 & 15,16 \\
AE & 5 & 11 & 17 \\
\end{tabular*}
\end{table}
Note that the EE and EA states are
treated as l-doubling pairs. The lines were fit to a Hamiltonian that included terms up
to the eighth power in angular momentum. Dependence on K expected from an IAM treatment
was incorporated using both Energy and B+C Fourier series with fixed ratios of
sine and cosine terms in $2 \pi \rho_a K /3$. The quality of the fit was, on the average,
within the experimental uncertainty. The EE and EA states have both b and c type lines,
while the AA and AE states have only b type lines.
The full vibration-torsion-rotation partition function, including corrections for states
not included in the compilation, is utilized for this catalog entry.
version 3 changes include:\\
1) fixed catalog ID \\
2) partition function divided by 2 \\
3) spin weights divided by 2 \\
4) lines with identical quant were merged \\
Changes 2 and 3 prevent degeneracies from hitting upper limit. The fourth change reduces the length of the listing from 183835 to 151544 lines.