Modern Molecular PhotochemistryBenjamin/Cummings Publishing Company, 1978 - 628 páginas Inleiding tot de studie van organische fotochemische reacties |
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Página 84
... bond axis . 2. Perpendicular to the bond axis . Notice that both of these oscillations are analogous to the 1s → 2p transforma- tion of atoms . The major difference is that two symmetry - distinct oscillations are possible for the ...
... bond axis . 2. Perpendicular to the bond axis . Notice that both of these oscillations are analogous to the 1s → 2p transforma- tion of atoms . The major difference is that two symmetry - distinct oscillations are possible for the ...
Página 171
... bond in S1 , the lack of a torque due to steric interactions makes the twisting motion slower than it is for 2. Fluorescence now competes with internal conversion . For compounds 3 and 4 the twisting motion about the C - C bond is ...
... bond in S1 , the lack of a torque due to steric interactions makes the twisting motion slower than it is for 2. Fluorescence now competes with internal conversion . For compounds 3 and 4 the twisting motion about the C - C bond is ...
Página 215
... bond . The Stretching and Breaking of a σ Bond Imagine the chemical bond of a diatomic molecule ( a - a ) as it is being stretched and eventually broken . As the bond stretches we anticipate that it will take on diradical character ...
... bond . The Stretching and Breaking of a σ Bond Imagine the chemical bond of a diatomic molecule ( a - a ) as it is being stretched and eventually broken . As the bond stretches we anticipate that it will take on diradical character ...
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