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Vibrational bond
A vibrational bond is a chemical bond that happens between two very large atoms, like bromine, and a very small atom, like hydrogen, at very high energy states. Vibrational bonds only exist for a few milliseconds. This bond is detectable through modern analytic chemistry and is signifigant because it affects the rate at which other reactions can occur.
==History==
Vibrational bonds were mathematically predicted almost thirty years before they were experimentally observed. The original theoretical calculations had been carried out by D.C. Clary and J.N.L Connor during the early 1980's. Together they hypothesized that with very large atoms and small atoms at high energy states, the elements would stabilize and create temporary bonds, for very short periods of time. The vibrational bond would be weaker than any currently known bond, like the commonly known ionic or covalent bonds.〔D.c. Clary and J.N.L. Connor 'Isotope and Potential energy sufrace effects in Vibrational Bonding' journal of physical Chemistry. 1984〕
One year after the theoretical discovery of vibrational bonds, J. Munz and his team confirmed the calculations that were previously made, and elaborated on them by showing that the vibrational bonds were most likely to occur during symmetric reactions, but stated that vibrational bonds may also be possible with asymmetric reactions.〔J. Manz, E. Pollak, J. Romelt 'A classical analysis of quantum resonances in isotopic collinear H + H2 Reactions' Chemical Physics letters, 1982〕 Their team explained that although vibrational bonding theories proved to be correct they found some inconsistencies with the 'classic model' and found that symmetric reactions will show resonance, but only in certain transition states. However, the classic model would still be viable to use to predict vibrational bonds.〔
In 1989, Donald Fleming noticed that a reaction between bromine and muonium slowed down as temperature increased. This phenomenon was known as a "vibrational bond" and would capture the attention of Donald Fleming again in 2014. In 1989 the technology did not exist to collect sufficient data on the reaction, and Donald Fleming and his team moved away from the research.〔Donald G. Fleming, Jorn Manz, Kazuma Sato, and Toshiyuki Takayanagi 'Fundamental Change in the Nature of Chemical Bonding by Isotopic Subistitution' Angewandte communications 2014〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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