Web Release Date: May 17,
Theoretical Prediction of Chemically Bound Compounds Made of Argon and Hydrocarbons

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Department of Physical Chemistry, The Hebrew University, Jerusalem 91904, Israel, and Department of Chemistry, University of California, Irvine, California 92697-2025
Received February 24, 2006

Abstract:
Equilibrium structures, vibrational properties, and stabilities of organo-argon compounds, HArC4H and HArC6H, are studied at the MP2=full/6-311++G(2d,2p) level of theory. Ab initio calculations show that the two molecules are metastable, but protected against the Ar + HY (Y = C4H or C6H) dissociation by high barriers, and these species are energetically stable with respect to the three separate fragments (H + Ar +Y). The implied kinetic stability of HArC4H and HArC6H molecules suggests that these species should very likely be candidates for experimental observation. The results may open possibilities of organic chemistry of light noble gas elements.
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