High-resolution rovibrational and rotational spectroscopy of the singly deuterated cyclopropenyl cation, c-C3H2D+†
Divita
Gupta, 
a
Weslley G. D. P.
Silva,
a
José L.
Doménech,
b
Eline
Plaar,
a
Sven
Thorwirth,
a
Stephan
Schlemmer
a
and
Oskar
Asvany
*a
a
Weslley G. D. P.
Silva,
a
José L.
Doménech,
b
Eline
Plaar,
a
Sven
Thorwirth,
a
Stephan
Schlemmer
a
and
Oskar
Asvany
*a
Abstract
Applying a novel action spectroscopic technique in a 4 K cryogenic ion-trap instrument, the molecule c-C3H2D+ has been investigated by high-resolution rovibrational and pure rotational spectroscopy for the first time. In total, 126 rovibrational transitions within the fundamental band of the ν1 symmetric C–H stretch were measured with a band origin centred at 3168.565 cm−1, which were used to predict pure rotational transition frequencies in the ground vibrational state. Based on these predictions, 16 rotational transitions were observed between 90 and 230 GHz by using a double-resonance scheme. These new measurements will enable the first radio-astronomical search for c-C3H2D+.
- This article is part of the themed collection: Astrochemistry at high resolution
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