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  • Bullvalene - American Chemical Society
    Bullvalene is a C 10 H 10 hydrocarbon with a unique property: It is a fluxional molecule in which all of the bonds rapidly form and break so that all of the carbon and hydrogen atoms are equivalent on the NMR timescale
  • Fluxional molecule - Wikipedia
    In chemistry and molecular physics, fluxional (or non-rigid) molecules are molecules that undergo dynamics such that some or all of their atoms interchange between symmetry-equivalent positions [1] Because virtually all molecules are fluxional in some respects, e g bond rotations in most organic compounds , the term fluxional depends on the
  • Synthesis of Bullvalenes: Classical Approaches and Recent . . .
    Fluxional molecules are dynamic structures that rapidly interchange between a number of constitutional isomers through low-energy rearrangements 1 These shapeshifting molecules have been crucial in the study of the fundamen-tal concept of valence tautomerization
  • CHE P9 M34 e-text - INFLIBNET Centre
    A molecule is considered to be fluxional if it shows line broadening in spectroscopic signature due to chemical exchange (which is beyond Heisenberg’s uncertainity principle)
  • The Journey to Fluorescent Bullvalenes: Pitfalls and Prospects
    Lighting up shape-shifting molecules: The fluxional bullvalene core supports the excimer formation of its two naphthoyl substituents leading to a characteristic excimer emission A dinaphthoylmethyl-substituted bullvalene derivative is presented that exhibits excimer fluorescence
  • One for all and all for one: shape-shifting organic molecules . . .
    Researchers in Switzerland have discovered a fluxional molecule that dynamically resolves to a single metastable structural isomer Bullvalene is an intriguing molecule A small polycycle with 10 carbons and 10 hydrogens, and an unusual property: it has no permanent chemical structure
  • Can density functional theory ‘Cope’ with highly fluxional . . .
    Shape-shifting molecules such as bullvalene undergo rapid structural reorganizations via degenerate Cope rearrangements Here, we obtain accurate CCSD (T) CBS barrier heights and reaction energies for a wide range of Cope rearrangements in substituted bullvalenes (C 10 H 9 R, R = NH 3, OH, CH 3, H, F, Cl, SH, and CN)





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