Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Franck Report

In the spring and summer of 1945, with the bomb almost ready to wreak its fearsome destruction, Franck held Compton to his promise. He had breakfast with Secretary of Commerce (later Vice President) Henry A. Wallace in Washington. And together with several other scientists from the atom bomb project, Franck authored a report that urged the government not to use its new weapon. That document, called the Franck Report, became the manifesto of a new movement. [Pg.261]

The oxidation of formyl groups accompanied by subsequent functionalization has showcased the utility of the Baeyer-Villiger oxidation. Franck reported the Baeyer-Villiger oxidation of naphthaldehydes as precursors to pharmacologically active quinone type compounds. This was exemplified by the conversion of aldehyde 104 into formate 105, which after formate cleavage, was further oxidized to the quinone system 106.55... [Pg.178]

The Franck report, the response of the Scientific Panel, and the Interim Comimttee recommendations are discussed in Ibid., pp. 365-72. [Pg.60]

Sdentists at the Metallurgical Laboratory issue the Franck Report, advocating international control of atomic research and proposing a demonstration of the atomic bomb prior to its combat use. [Pg.65]

The Interim Committee, supporting its Scientific Panel, rejects fte Franck Report recommendation that the bomb be demonstrated prior to combat. [Pg.65]

More recently, another sulfoxide- sulfine photoconversion has been reported by Franck-Neumann and Lohmann223. These authors have shown that the photolysis of allylsulfinylpyrazolenines (167) provides a novel route to vinyl sulfines 168, presumably via ring-opening to a-diazosulfoxides and their a-sulfinylcarbene intermediates (equation 67). [Pg.749]

Malinin (7), Todheide and Franck (8) and Takenouchi and Kennedy (9) reported equilibrium data for this system at temperatures up to 350°C and pressures to 3500 bars. However, the vapor phase data of these authors do not always agree with each other. The aqueous phase data have been used to extend the temperature - dependent interaction parameter to 300°C. [Pg.398]

The Ky results of Sweeton, Mesmer and Baes (35) plotted in Fig. 2 were reported in 1974 and although they only extend to 300°C they may well be more accurate above this temperature than the experimental results of Fisher and Barnes(36), since, as mentioned, earlier, the Debye-Huckel theory may not give reliable extrapolations to infinite dilution at temperatures where water is highly compressible. While their work (35) involves extrapolation to infinite dilution as well as to higher temperatures it is very encouraging to note that their ACp at 300°C (-960 J K mol ) is of the magnitude expected on the basis of the NaCl studies referred to in Section 2. The conductance results of Sirota and Shviriaev (37) above 300°C also seem more consistent with the results of Sweeton, Mesmer and Baes (35), than with those of Fisher and Barnes (36). Marshall and Franck s recent representation of data up to 1000°C and 10,000 bars (38) predicts high temperature SVP results somewhat lower than those of Sirota and Shviriaev (37). [Pg.663]

Francium, binary carbide not reported, 11 210 Franck-Condon effect, 16 69 energy, 21 180, 188, 189 envelopes, 16 80, 89, 90 hot bands, 16 90 factors, 32 47 principle, 21 179, 181 vibronic replica, 35 370 frd redon, 38 412, 414 Freeze quench EPR spectroscopy (FQ-EPR), CODH/ACS, 47 318 Fremy s salt, 33 106 Friedel-Crafts reaction, 17 194 cyclophosphazene, 21 65, 66 Frontier molecular orbitals, heteronuclear gold cluster compounds, 39 378-381 Frozen solutions, MOssbauer spectra in studies of, 15 101-103... [Pg.110]

Since 1971, we have been engaged in the synthesis of g-substituted dialkyl N-nitrosamines, namely -hydroxy N-nitrosamines. Because of the presumed high reactivity of these alcohols, it seemed desirable to have them in a stabilized form, e.g. as esters. In 1970 Franck and his group reported a method to convert tertiary amines into dialkyInitrosamines in the presence of 2-nitropropane, cuprous ion and oxygen 9). If the amine is substituted with different alkyl groups, these groups are cleaved statistically (Eq. 1). [Pg.57]

W.G. Brown J. Franck T.R. Hogness W.C. Johnson H.I. Schlesinger T.F. Young Chicago, USA studies of free radical reactions nominated jointly with M.S. Kharasch report by A. Fredga... [Pg.78]

Excitation of the coupled A2, Bi states results in the decay rate designated X3 which appears to be nearly independent of cluster size. A small increase in the value of x3 appears to occur for (S02)m clusters from the monomer (0.6 ps) to the dimer (0.9 ps), but remains constant at about 1 ps for larger cluster sizes. A likely interpretation of the observed decay process can be found in a detailed computational study [6] which reports that following the initial vertical excitation of the 1 B state, the excited state wave packet travels from the Bi state into the double wells that result from the crossing of the 1A2 and Bi states. The transition of the excited state population into the double wells of the A2 and B states is believed to lead to the decay observed in the pump-probe experiment because the potential energy well minima of both of these states are outside of Franck-Condon region for the absorption of the probe laser pulse. Therefore, ion signal is not observed once the transition has occurred. The primary discrepancy between the computational results of Ref. [6] and the... [Pg.27]

Here we report our exploration of the possibility of inducing an ultrafast non-Franck-Condon transition, which we defined to be the creation of a wave packet at the other turning point of the above-mentioned oscillation, see Fig. 1(b), faster than the time it takes the Franck-Condon packet to reach that turning point due to the natural (field-free) dynamics. We have explored two possible routes for inducing non-Franck-Condon transitions, namely phase-tailoring of a weak-field ultraviolet (UV) pulse [6] tmd a two-pulse scheme combining a transform limited weak-field UV pulse with a strong infrared (IR) field [7]. [Pg.135]

HCI (g). Foote and Mohler1 gave for the energy of ionization of HCI (g) to form HCI (g) the value 14.0 volt-electrons Barton1 reported 13.8 volt-electrons. Other values were reported by Kemble,1 Knipping,1-2 Franck,1 Mackay,1, 2 and Barker and Duffendack.1... [Pg.107]

About 30 years after Buback and Franck s pioneering study on the critical point of molten NH4CI and 10 years after Singh and Pitzer s report on a mean-field nature of the liquid-liquid critical point in an electrolyte solution,... [Pg.55]

Franck-Neumann has reported the synthesis of naturally occurring tropolones -thujaplicin and 3-do-labrin via the readily available [Fe(tropone)(CO)3] as shown in Scheme 23.43 A key step in the sequence is regiospecific acetylation of the [Fe(tropone)(CO)3] complex, a reaction which cannot be carried out on... [Pg.707]

CasN2 (c). For the heat of solution of calcium nitride, Moser and Herzner1 reported 261.6 and Guntz and Bassett1 2 reported 342.7. From measurement of the direct formation, Franck and Bodea1 reported Qf = 102.6. [Pg.346]


See other pages where Franck Report is mentioned: [Pg.833]    [Pg.238]    [Pg.259]    [Pg.238]    [Pg.217]    [Pg.46]    [Pg.46]    [Pg.264]    [Pg.833]    [Pg.238]    [Pg.259]    [Pg.238]    [Pg.217]    [Pg.46]    [Pg.46]    [Pg.264]    [Pg.523]    [Pg.382]    [Pg.7]    [Pg.455]    [Pg.661]    [Pg.230]    [Pg.947]    [Pg.46]    [Pg.5]    [Pg.890]    [Pg.113]    [Pg.503]    [Pg.300]    [Pg.272]    [Pg.501]    [Pg.111]    [Pg.170]    [Pg.400]    [Pg.785]    [Pg.101]    [Pg.108]    [Pg.208]   
See also in sourсe #XX -- [ Pg.259 ]

See also in sourсe #XX -- [ Pg.217 ]




SEARCH



Franck

Francke

© 2024 chempedia.info