C9H
Nonatetraynylidyne, X 2Πr
Species tag 109501
Version1
Date of EntryJuly 2000
ContributorH. S. P. Müller

The lines have been reported by
(1) M. C. McCarthy, M. J. Travers, P. Kalmus, C. A. Gottlieb, and P. Thaddeus, 1996, Astrophys. J. 467, L125.
The fit has been carried out using constants and quantum numbers of Hund's case (b). The dipole moment has been estimated.
Lines Listed820
Frequency / GHz< 82.2
Max. J99
log STR0-9.0
log STR1-5.0
Isotope Corr.-0.0433
Egy / (cm-1)0.0
 µa / D7.0
 µb / D 
 µc / D 
 A 
 B413.237
 C 
 Q(300.0)113559.3834
 Q(225.0)83457.0047
 Q(150.0)53501.7734
 Q(75.00)24058.3344
 Q(37.50)10201.8431
 Q(18.75)4244.8312
 Q(9.375)1922.8438
detected in ISM/CSMno

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