In database:
2.9-78 cm-1
235-260 nm
Ethynyl radical (C2H)
Molecular weight
Freezing point
Boiling point

UV cross-sections
Please see The MPI-Mainz UV/VIS Spectral Atlas

Microwave line list
From JPL Microwave catalog
Image of prediction file from spcat showing 2.9-78 cm -1, in units of MHz and nm2*MHz/molecule

Additional References

Fundamental frequencies from NIST Chemistry Webbook
n1 3298.85 cm-1 (S) CH stretch
n2 371.6 cm-1 (P) bend
n3 1840.57 cm-1 (S) CC stretch

List of available data for all molecules in database
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