Complex, heteromolecular

Heteromolecular -complexes of aromatic cation radicals have been designed from the complexation of aromatic cation radical with a different neutral aromatic donor but such ionic K-heterocomplexes were observed as metastable species in the gas phase or in freon matrices57 58. 

It is emphasized that the terms excimer2 and exciplex3,4 are reserved here for homomolecular and heteromolecular excited double molecules formed after the act of light absorption by one component in a process of photoassociation, in the absence of spectroscopic or cryoscopic evidence for molecular association in the ground state. Recent findings indicate that excimer (or exciplex) formation may also result from triplet-triplet annihilation,5,8 cation-anion combination7 (doublet-doublet-annihilation), and electron capture by the (relatively stable) dimer (or complex) cation8 these processes are discussed in Section VII. 

Heteromolecular seeding, in crystal engineering, 12, 581 Heteronuclear alkynylcopper complexes, characteristics,... 

Solvation energy of complex HB by solvent A is small because coordination vacancies of the proton are saturated to a considerable extent. Therefore the interaction energy between A and B influences significantly the value of mixed solvents (alcohol-water and alcohol-pyridine, for instance) are different because of the proton resolvation process. This can be explained in terms of higher energy of heteromolecular association for the alcohol-water in comparison with alcohol pyridine. 

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