Modern Molecular PhotochemistryBenjamin/Cummings Publishing Company, 1978 - 628 páginas Inleiding tot de studie van organische fotochemische reacties |
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Página 98
... Allowed Է 22 ос · T , ° s 1 First Order < T , Hsols > 0 T 1 Rigorously forbidden Allowed Weakly allowed 52 S So Allowed Rigorously forbidden Weakly Allowed allowed Figure 5.12 The transition from Zero Order to First Order involves ...
... Allowed Է 22 ос · T , ° s 1 First Order < T , Hsols > 0 T 1 Rigorously forbidden Allowed Weakly allowed 52 S So Allowed Rigorously forbidden Weakly Allowed allowed Figure 5.12 The transition from Zero Order to First Order involves ...
Página 106
... allowed " transitions ( ƒ = 1 ) correspond to values of & max on the order of 104–105 . The weakest " allowed " transitions possess & max ~ 10 and therefore correspond to f 104. Figure 5.14 compares & max and f in terms of absorption ...
... allowed " transitions ( ƒ = 1 ) correspond to values of & max on the order of 104–105 . The weakest " allowed " transitions possess & max ~ 10 and therefore correspond to f 104. Figure 5.14 compares & max and f in terms of absorption ...
Página 495
... allowed disrotatory 6 - electron electrocyclic ring closure . Irradiation of 33 results in an " allowed " 2 - electron trans - cis isomerization to yield 35 , the all - cis tetraene . Heatings of 35 yields 32 via a thermally allowed ...
... allowed disrotatory 6 - electron electrocyclic ring closure . Irradiation of 33 results in an " allowed " 2 - electron trans - cis isomerization to yield 35 , the all - cis tetraene . Heatings of 35 yields 32 via a thermally allowed ...
Conteúdo
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