Modern Molecular PhotochemistryBenjamin/Cummings Publishing Company, 1978 - 628 páginas Inleiding tot de studie van organische fotochemische reacties |
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Página 275
... pair . The radical pair mechanism of CIDNP may be broken down into two parts : ( a ) the spin mechanics and spin dynamics ( time evolution of " singlet character " in triplet states and the development of " triplet character ” in ...
... pair . The radical pair mechanism of CIDNP may be broken down into two parts : ( a ) the spin mechanics and spin dynamics ( time evolution of " singlet character " in triplet states and the development of " triplet character ” in ...
Página 276
... pair . On the other hand , the rates of diffusion of triplet and singlet radical pairs do not depend on spin multiplicity . Thus , depending on the spin state of a radical pair , the competition between cage reaction and escape ( via ...
... pair . On the other hand , the rates of diffusion of triplet and singlet radical pairs do not depend on spin multiplicity . Thus , depending on the spin state of a radical pair , the competition between cage reaction and escape ( via ...
Página 532
... pair of radicals is formed and may themselves undergo radical recombination or disproportionation . If free radicals result from the original cage - radical pair , they may be trapped by appropriate radical scavengers . The ...
... pair of radicals is formed and may themselves undergo radical recombination or disproportionation . If free radicals result from the original cage - radical pair , they may be trapped by appropriate radical scavengers . The ...
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1 | 10 |
Electronic Orbitals Configurations and States | 17 |
7 | 21 |
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absorption acceptor acetone aromatic benzene benzophenone bimolecular bond carbonyl Chem chemical CIDNP collision compounds configuration conrotatory correlation diagram corresponds cyclic cycloaddition Dewar benzene dipole diradical donor efficiency electrocyclic electrocyclic reactions electron spin electronically excited emission energy transfer ethylene example excimer exciplex experimental Figure fluid solution fluorescence formation Franck-Condon hydrogen abstraction intermediate internal conversion intersystem crossing intramolecular jump k₁ kcal/mole ketones lifetime magnetic field mechanism molecular molecule naphthalene nuclear geometry nuclear motion observed occur organic molecules oscillator oxetane oxygen pathway Ph Ph phosphorescence photochemical photochemistry photocycloaddition photon Photophysics photoreactions photosensitized Phys possess processes quantum yield quencher quenching radiationless transitions radiative radical pair rate constant reactant reaction reactive rearrangement representative point result ring S₁ S₁(n S₂ sec¯¹ sec¹ sensitization singlet solvent spectroscopic spectrum spin-orbit coupling structure symmetry T₁ temperature triplet triplet-triplet Turro undergo vibrational x-cleavage Zero Order zwitterionic