Mode, donating

The modes with large B g (s) in the entrance channel are called the donating modes, because an excitation of such modes makes possible an energy transfer to the reaction coordinate degree of freedom (an increase of the kinetic energy along the reaction path). This will make the reaction rate increase. 

This contrasts with what happens when the H2 moleeule is excited. In such a case, the barrier is lowered by as mueh as about 3 fccal/mol. This eonforms that the HH stretching vibration is a donating mode. 

Coriolis coupling (p. 906 and 912) critical points (p. 888) cross section (p. 901) curvature coupling (p. 906 and 914) cycloaddition reaction (p. 944) democratic coordinates (p. 898) diabatic and adiabatic states (p. 949) donating mode (p. 914) early and late reaction barriers (p. 895) electrophilic attack (p. 938) entrance and exit channels (p. 895) exo- and endothermic reactions (p. 909) femtosecond spectroscopy (p. 889) Franck-Condon factors (p. 962) intrinsic reaction coordinate (IRC) (p. 902) inverse Marcus region (p. 954) mass-weighted coordinates (p. 903)... 

DNA computing, 1003 DNA hybridization 1006 donating mode, 914, 919 drain-pipe of reaction, 884, 893... 

Procedures for the collection of whole blood are similar throughout the world. An interval from at least 8 weeks (United States) to 12 weeks (United Kingdom) is required between a donation of 450 mL blood, which yields about 250 mL plasma. In some countries a smaller volume of blood is collected, eg, 350—400 mL in Italy, Greece, and Turkey and as Httie as 250 mL in some Asian countries (147). Regulations concerning plasmapheresis donations vary more widely across the world eg, up to 300 mL of plasma can be taken in Europe in contrast to 1000 mL in the United States, both on a weekly basis. Consequentiy, both the mode of donation and the country in which it is given can have a profound effect on plasma collection (Table 6). 

CgH COO from BPO. The first type involves direct radical displacement on the oxygen—oxygen bond and is the preferred mode for nucleophilic radicals, eg, -CH(R)OR7 The second type involves radical addition to, or abstraction from, the hydrocarbyl group adjacent to the peroxide this is the preferred mode for electrophilic radicals, eg, Cl C (eq. 32). In the last type (eq. 33), there is hydrogen donation from certain hydrogen-donating radicals, eg, ketyls (52,187,188,199). 

Raman spectra have also been reported on ropes of SWCNTs doped with the alkali metals K and Rb and with the halogen Br2 [30]. It is found that the doping of CNTs with alkali metals and halogens yield Raman spectra that show spectral shifts of the modes near 1580 cm" associated with charge transfer. Upshifts in the mode frequencies are observed and are associated with the donation of electrons from the CNTs to the halogens in the case of acceptors, and downshifts are observed for electron charge transfer to the CNT from the alkali metal donors. These frequency shifts of the CNT Raman-active modes can in principle be u.sed to characterise the CNT-based intercalation compound for the amount of intercalate uptake that has occurred on the CNT wall. 

As previously described, the Gould-Jacobs reaction has been applied to heterocycles fused to anilines, and to some amino-substituted heterocycles. Selectivity of N- and C-cyclization of 2-aminopyridino-methylene malonates has been mentioned (51 and 56). The normal mode of cyclization of 2-aminopyridino-methylene malonates is on the nitrogen to form a pyridopyrimidine. If an electron-donating group (EDG) is in the 6-... 

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