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The former cage is assembled from a 2:3 ratio of metal (M) and ligand (L), where the metal can be copper, zinc, or cadmium. This cage is homoleptic and assembles into a hexadecanuclear framework. The second cage is assembled from a 4:1:4 ratio of MBF 4, the ligand L p-Ph and the ligand L mes. This cage is heteroleptic and assembles into a ...
The second-order perturbation approach was employed by Pearson in 1975 to predict instabilities and distortions in molecular systems; [11] he called it "second-order JTE" (SOJTE). The first explanation of PJT origin of puckering distortion as due to the vibronic coupling to the excited state, was given for the N 3 H 3 2+ radical by Borden ...
Elatenyne is a liquid molecule isolated from Laurencia elata, marine red algae. [9] Due to its pseudo-C 2 symmetry, the difference of NMR spectrum between elatenyne and its stereoisomer is hard to differentiate. [10] [11] However, with the crystalline sponges, the Fujita group easily elucidated the chirality in the elatenyne. [11] Elatenyne
In the simplest case, the cation is a metal atom and the anion is a nonmetal atom, but these ions can be of a more complicated nature, e.g. molecular ions like NH 4 + or SO 4 2−. At normal temperatures and pressures, ionic bonding mostly creates solids (or occasionally liquids) without separate identifiable molecules, but the vaporization ...
Chimeric small molecule therapeutics are a class of drugs designed with multiple active domains to operate outside of the typical protein inhibition model. While most small molecule drugs inhibit target proteins by binding their active site, chimerics form protein-protein ternary structures to induce degradation or, less frequently, other protein modifications.
With the synthesis of the Sc 3 N@C 80 by Harry Dorn and coworkers, the inclusion of a molecule fragment in a fullerene cage had succeeded for the first time. This compound can be prepared by arc-vaporization at temperatures up to 1100 °C of graphite rods packed with scandium(III) oxide iron nitride and graphite powder in a K-H generator in a ...
In chemistry, pyramidal inversion (also umbrella inversion) is a fluxional process in compounds with a pyramidal molecule, such as ammonia (NH 3) "turns inside out". [1] [2] It is a rapid oscillation of the atom and substituents, the molecule or ion passing through a planar transition state. [3]
Chemical nomenclature, replete as it is with compounds with very complex names, is a repository for some names that may be considered unusual. A browse through the Physical Constants of Organic Compounds in the CRC Handbook of Chemistry and Physics (a fundamental resource) will reveal not just the whimsical work of chemists, but the sometimes peculiar compound names that occur as the ...