Spectroscopic Observation of Matrix-Isolated Carbonic Acid Trapped from the Gas Phase
Journal article published in 2010 by
Jürgen Bernard,
Markus Seidl,
Ingrid Kohl,
Klaus R. Liedl,
Erwin Mayer,
Óscar Gálvez,
Hinrich Grothe 
,
Thomas Loerting
,
Thomas Loerting
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Abstract
Against all odds: Carbonic acid molecules were trapped from the gas phase in a solid noble-gas matrix at <10K and studied by IR spectroscopy. The 2H and and 13C isotopologues were also examined. Gas-phase carbonic acid is thought to exist as a 1:10:1 mixture of two monomeric conformers and the cyclic dimer (H 2CO 3) 2. This data is vital in the search for gas-phase carbonic acid in astrophysical environments.