Search results
Results from the WOW.Com Content Network
Clar's rule has also been supported by experimental results about the distribution of π-electrons in polycyclic aromatic hydrocarbons, [7] valence bond calculations, [8] and nucleus-independent chemical shift studies. [9] Clar's rule is widely applied in the fields of chemistry and materials science.
Triangulene (also known as Clar's hydrocarbon) is the smallest triplet-ground-state polybenzenoid. [1] It exists as a biradical with the chemical formula C 22 H 12. [2] It was first hypothesized by Czech chemist Erich Clar in 1953. [3]
The first iptycene was reported in 1931 by Erich Clar. [2] Paul Bartlett's research group developed Clar's method and made the first triptycene. [3] Following Bertlett's work on triptycene, Hart et al., with acknowledgement to Professor Joel F. Liebman, proposed the trivial name iptycene for this class of molecules. [4]
For premium support please call: 800-290-4726 more ways to reach us
According to Clar's rule, [20] the resonance structure of a PAH that has the largest number of disjoint aromatic pi sextets—i.e. benzene-like moieties—is the most important for the characterization of the properties of that PAH. [21] Benzene-substructure resonance analysis for Clar's rule
“Clare’s life will be investigated before we can move on. “No one knows how long it can take, 10 years, 20 years, two years, it depends on how fast things move.
Victor's senior guard was the closer as he scored 13 of his 23 points in the fourth quarter. Victor trailed by two when Clar became more aggressive, converting 6-of-6 free throws in the final ...
Zethrene (dibenzo[de,mn]naphthacene) is a polycyclic aromatic hydrocarbon consisting of two phenalene units fused together. According to Clar's rule, the two exterior naphthalene units are truly aromatic and the two central double bonds are not aromatic at all.