Cyanide/isocyanide abundances in the interstellar medium - I. Theoretical spectroscopic characterization

Details Cyanide/isocyanide abundances in the interstellar medium - I. Theoretical spectroscopic characterization Cyanide/isocyanide abundances in the interstellar medium - I. Theoretical spectroscopic characterization

Feb 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012mnras.420.1188s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 420, Issue 2, pp. 1188-1194.

Astronomy and Astrophysics

Astronomy

Ism: Abundances, Ism: Molecules

Scientific paper

Modelling molecular abundances in the interstellar medium requires accurate molecular data. In this work, structural and spectroscopic properties of a series of metal cyanides/isocyanide species containing Na, Mg, Al and Si are calculated and compared using highly correlated ab initio calculations. The metal substitution effect on molecular properties is discussed. Isomerization pathways and transitions states are detailed.
NaCN shows three isomeric structures, one T shaped and two linear forms, whereas the remaining compounds display two linear minimum energy geometries. For the first time, NaCN secondary minima are described.
Second-order perturbation theory spectroscopic parameters are determined from an anharmonic RCCSD(T)/aug-cc-pV5Z force field. Very accurate rotational constants are calculated using a complete basis set and taking into account vibrational effects and the structure variation with core electron correlation. For l-SiCN and l-SiNC, spin-orbit parameters are also provided. Present theoretical results are compared with available experimental data attaining a good agreement.

Affiliated with

Also associated with

No associations

Rating

Cyanide/isocyanide abundances in the interstellar medium - I. Theoretical spectroscopic characterization does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cyanide/isocyanide abundances in the interstellar medium - I. Theoretical spectroscopic characterization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyanide/isocyanide abundances in the interstellar medium - I. Theoretical spectroscopic characterization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1365853