HCP, v2 = 1
Phosphaethyne or Methylidinephosphine, v2 = 1
Species tag 044503
Version1
Date of EntryFeb. 2000
ContributorH. S. P. Müller

The experimental data were reported by
(1) P. Dréan, J. Demaison, L. Poteau, and J.-M. Denis, 1996, J. Mol. Spectrosc. 176, 139;
and by
(2) L. Bizzocchi, S. Thorwirth, H. S. P. Müller, F. Lewen, and G. Winnewisser, 2001, J. Mol. Spectrosc. 205, 110.
The H constant was kept fixed to the value from
(3) M. Jung, B. P. Winnewisser, and M. Winnewisser, 1997, J. Mol. Struct. 413–414, 31.
The partition function takes into account v2 = 0 and 1. Numbers in parentheses refer to the ground vibrational state.
Predictions should be reasonable throughout.
The dipole moment was assumed to be the same as in the ground vibrational state, see e044502.cat.

Lines Listed80
Frequency / GHz< 1636
Max. J41
log STR0-6.5
log STR1-5.7
Isotope Corr.0.0
Egy / cm–1674.0328
 µa / D0.390
 µb / D 
 µc / D 
 A / MHz 
 B / MHz19989.67
 C / MHz 
 Q(300.0)338.1042 (313.4649)
 Q(225.0)241.4288 (235.1433)
 Q(150.0)157.3325 (156.8476)
 Q(75.00)78.5786 (78.5782)
 Q(37.50)39.4538 (39.4538)
 Q(18.75)19.8953 (19.8953)
 Q(9.375)10.1194 (10.1194)
detected in ISM/CSMn


Database maintained by Holger S. P. Müller and Sven Thorwirth, programming by D. Roth and F. Schlöder