Zhang W, Zhu W, Liang W, Zhao Y, Nelsen SF. Ab initio calculations on the intramolecular electron transfer rates of a bis(hydrazine) radical cation.
J Phys Chem B 2008;
112:11079-86. [PMID:
18683973 DOI:
10.1021/jp8036507]
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Abstract
Electron transfer (ET) rates of a charge localized (Class II) intervalence radical cation of a bis(hydrazine) are investigated theoretically. First, the intramolecular ET parameters, i.e., reorganization energy, electronic coupling, and effective frequency, are calculated using several ab initio approaches. And then, the extended Sumi-Marcus theory is employed to predict ET rates by using the parameters obtained. The results reveal that the rates of three isomers of [22/hex/22]+, oo+[22/hex/22]+, io +[22/hex/22]+, and oi+[22/hex/22]+, are agreement with the experiment quite well while the rate of isomer ii+[22/hex/22]+ is about 1000 times larger than those of the others. The validity of different ab initio approaches for this system is discussed.
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