MgC5N+
Cyanobutadiynyliummagnesium, X 1Σ+
Species tag 098504
Version1*
Date of EntryMay 2023
ContributorH. S. P. Müller

The astronomical lines have been reported by
(1) J. Cernicharo, C. Cabezas, J. R. Pardo, M. Agúndez, O. Roncero, B. Tercero, N. Marcelino, M. Guélin, Y. Endo, and P. de Vicente, 2023, Astron. Astrophys. 672, Art. No. L13.
The quartic distortion parameter was kept fixed to the value from a quantum chemical calculation.
The calculations should be quite reliable up to about 90 GHz.
The dipole moment was taken from a quantum chemical calculation in (1).
Its value should be viewed with some caution.

Lines Listed100
Frequency / GHz< 120
Max. J100
log STR0-9.0
log STR1-1.5
Isotope Corr. 
Egy / cm–10.0
 µa / D23.7
 µb / D 
 µc / D 
 A / MHz 
 B / MHz594.32
 C / MHz 
 Q(300.0)10520.6259
 Q(225.0)7890.0916
 Q(150.0)5259.8648
 Q(75.00)2629.9454
 Q(37.50)1315.1010
 Q(18.75)657.7077
 Q(9.375)329.0182
 Q(5.000)175.6316
 Q(2.725)95.8712
detected in ISM/CSMyes


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