7. Tetrazinodiheteroarene: 'Charge -Transfer'-Komplexbildung mit Akzeptorverbindungen

Article abstract of DOI:10.1002/hlca.19900730108

The formation of charge-transfer complexes and radical-ion pairs of donor compounds 1-6 with acceptor compounds 7-12 has been investigated by means of VIS/NIR-spectrospcopic methods.The equilibrium constants K_CT (up to 1100M^-1) for the donor/acceptor couple dipyrido<1,2-b:1',2'-e><1,2,4,5>tetrazine (2)/ethylenetetracarbonitrile (11) and spectra of the CT complexes have been determined in 1,2-dichloroethane solution at 25 deg C.Results are discussed in relation to known CT-complex properties and to voltammetric redox-potentials E_1/2.