HC7NH+
Protonated heptatriynenitrile
Species tag 100511
Version1*
Date of EntryMar. 2022
ContributorH. S. P. Müller

Rotational transition frequencies from astronomical observations were reported by
(1) C. Cabezas, M. Agúndez, N. Marcelino, B. Tercero, R. Fuentetaja, P. de Vicente, and J. Cernicharo, 2022, Astron. Astrophys. 659, Art. No. L8.
Calculations beyond 68 GHz should be viewed with caution. The dipole moment was taken from a quantum chemical calculation in (1).

Lines Listed105
Frequency / GHz< 117
Max. J105
log STR0-8.7
log STR1-2.7
Isotope Corr. 
Egy / cm–10.0
 µa / D6.4
 µb / D 
 µc / D 
 A / MHz 
 B / MHz553.939
 C / MHz 
 Q(300.0)11286.6472
 Q(225.0)8464.7444
 Q(150.0)5643.0578
 Q(75.00)2821.5875
 Q(37.50)1410.9334
 Q(18.75)705.6267
 Q(9.375)352.9785
 Q(5.000)188.4106
 Q(2.725)102.8358
detected in ISM/CSMyes


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