Posts Tagged ‘Dipole’
Friday, April 13th, 2018
In several posts a year or so ago I considered various suggestions for the most polar neutral molecules, as measured by the dipole moment. A record had been claimed[1] for a synthesized molecule of ~14.1±0.7D. I pushed this to a calculated 21.7D for an admittedly hypothetical and unsynthesized molecule. Here I propose a new family of compounds which have the potential to extend the dipole moment for a formally neutral molecule up still further.
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References
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J. Wudarczyk, G. Papamokos, V. Margaritis, D. Schollmeyer, F. Hinkel, M. Baumgarten, G. Floudas, and K. Müllen, "Hexasubstituted Benzenes with Ultrastrong Dipole Moments", Angewandte Chemie International Edition, vol. 55, pp. 3220-3223, 2016. http://dx.doi.org/10.1002/anie.201508249
Tags:aromatisation stabilization energy, Chemical polarity, chemical properties, Chemistry, Dipole, Electric dipole moment, Electromagnetism, energy, Interesting chemistry, Moment, Nature, Physical quantities, Physics, Potential theory
Posted in Uncategorised | 11 Comments »
Saturday, December 24th, 2016
The previous posts produced discussion about the dipole moments of highly polar molecules. Here to produce some reference points for further discussion I look at the dipole moment of glycine, the classic zwitterion (an internal ion-pair).
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Tags:aqueous solution, Chemical polarity, Chemistry, dielectric, Dipole, Electric dipole moment, Electromagnetism, Interesting chemistry, Magnetism, Moment, Nature, Physical quantities, Physics, Potential theory, zwitterion
Posted in crystal_structure_mining | 1 Comment »
Wednesday, June 10th, 2015
I have blogged before about the mechanism of this classical oxidation reaction. Here I further explore computed models, and whether they match the observed kinetic isotope effects (KIE) obtained using the natural-abundance method described in the previous post.
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Tags:ATM, Baeyer–Villiger oxidation, Chemistry, Dipole, energy, energy gradient, Kinetic isotope effect, Physical organic chemistry
Posted in reaction mechanism | 4 Comments »