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Citation: Chiang Mingchien, Hu Weixiao*. INVESTIGATION OF CT-COMPLEXATION AMONG HOMOLO US ELECTRON DONORS AND HOMLO US ACCEPTORS Ⅱ. GEOMETRICAL MATCH EFFECT[J]. Acta Physico-Chimica Sinica, ;1987, 3(03): 298-305. doi: 10.3866/PKU.WHXB19870314 shu

INVESTIGATION OF CT-COMPLEXATION AMONG HOMOLO US ELECTRON DONORS AND HOMLO US ACCEPTORS Ⅱ. GEOMETRICAL MATCH EFFECT

1.
Institute of Chemistry; Academia Sinica; Beijing; China

Received Date: 25 December 1985
Available Online: 15 June 1987

During the investigation of the relative orientation between donor and acceptor in weak CT-complexes, it has been noticed that the electrostatic action between molecules should be considered much more. Based on the analysis of thin crystal structures, a “head-to-head” geometrically matching model has been proposed. From the analysis of the energy of action between donor and acceptor using this model and the measurement of the equilibrium constants, it has been found that when homolo us donors act with sameacceptor, because of the geometrical match effect, the stability of the ground state of the complex does not change monotoneously with the asending serial number of donor wheras the stabilities at the ends of the given donor series are smaller and the largest stability presents in middle.
In IR spectra, a similar trends of relative intensity of some adsorption peaks been observed.
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