Preparation and Photochemistry of Hydroxy Isocyanate
Guohai Deng, Caio M. Porto, Artur Mardyukov, Peter R. Schreiner
TL;DR
Scientists identified a new molecule, hydroxy isocyanate, which could be important in space and early life chemistry.
Contribution
The first experimental identification and characterization of hydroxy isocyanate HONCO using spectroscopy and computations.
Findings
HONCO was synthesized and isolated in argon matrices at low temperatures.
UV irradiation caused HONCO to decompose into HON, HNO, and CO complexes.
Matrix isolation IR and UV/vis spectroscopy confirmed the molecule's structure.
Abstract
We describe the first spectroscopic identification of hitherto experimentally unreported hydroxy isocyanate HONCO, a potential candidate for interstellar medium and prebiotic chemistry. This planar chain molecule was prepared in the gas phase through flash vacuum pyrolysis of phenyl N-hydroxycarbamate at 650 °C and was subsequently trapped in argon matrices at 3.5 K. Its characterization was accomplished by means of matrix isolation IR and UV/vis spectroscopy together with quantum chemical computations. Upon UV light (λ = 313 nm) irradiation, HONCO decomposes into hydrogen-bonded complexes of HON and HNO with CO.
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Taxonomy
TopicsMolecular Spectroscopy and Structure · Advanced Chemical Physics Studies · Astrophysics and Star Formation Studies