A chemical dynamics study on the gas-phase formation of triplet and singlet C5 H2 carbenes

Proceedings of the National Academy of Sciences of the United States of America
Chao HeRalf I Kaiser

Abstract

Since the postulation of carbenes by Buchner (1903) and Staudinger (1912) as electron-deficient transient species carrying a divalent carbon atom, carbenes have emerged as key reactive intermediates in organic synthesis and in molecular mass growth processes leading eventually to carbonaceous nanostructures in the interstellar medium and in combustion systems. Contemplating the short lifetimes of these transient molecules and their tendency for dimerization, free carbenes represent one of the foremost obscured classes of organic reactive intermediates. Here, we afford an exceptional glance into the fundamentally unknown gas-phase chemistry of preparing two prototype carbenes with distinct multiplicities-triplet pentadiynylidene (HCCCCCH) and singlet ethynylcyclopropenylidene (c-C5H2) carbene-via the elementary reaction of the simplest organic radical-methylidyne (CH)-with diacetylene (HCCCCH) under single-collision conditions. Our combination of crossed molecular beam data with electronic structure calculations and quasi-classical trajectory simulations reveals fundamental reaction mechanisms and facilitates an intimate understanding of bond-breaking processes and isomerization processes of highly reactive hydrocarbon intermedi...Continue Reading

References

Dec 18, 1992·Chemical Physics Letters·S A Maluendes, A D McLean
Jan 28, 2006·The Journal of Chemical Physics·Stefan Grimme
Jul 31, 2007·Journal of the American Chemical Society·José G LópezWilliam L Hase
Dec 18, 2007·The Journal of Chemical Physics·Thomas B AdlerHans-Joachim Werner
Jan 5, 2008·Physical Chemistry Chemical Physics : PCCP·N HansenT A Cool
Mar 5, 2008·The Journal of Chemical Physics·Kirk A PetersonHans-Joachim Werner
Feb 12, 2009·The Journal of Chemical Physics·Gerald KniziaHans-Joachim Werner
Mar 4, 2010·Biophysical Journal·Antonija Kuzmanic, Bojan Zagrovic
Mar 4, 2011·Journal of Computational Chemistry·Stefan GrimmeLars Goerigk
Nov 29, 2011·Physical Chemistry Chemical Physics : PCCP·Antony V WilsonRalf I Kaiser
Jul 3, 2015·The Journal of Chemical Physics·Mathias SteglichJohn P Maier
May 26, 2017·Physical Chemistry Chemical Physics : PCCP·Joao Marcelo Ribeiro, Alexander M Mebel
Feb 19, 2019·The Journal of Physical Chemistry. a·Engelbert ReuschPatrick Hemberger
Jul 4, 2019·The Journal of Physical Chemistry. a·Venkatesan S ThimmakonduAmir Karton

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Citations

May 19, 2021·The Journal of Physical Chemistry. a·Tarun RoyVenkatesan S Thimmakondu

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