The Raman spectra of some molecular complexes of 1-azabicyclo[2.2.2]octane and 1,4-diazabicyclo[2.2.2]octane
β Scribed by P.S. Santos; M.T.S. Mello
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 515 KB
- Volume
- 178
- Category
- Article
- ISSN
- 0022-2860
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## Abstract Three isomeric zinc bisporphyrins have been prepared by covalently linking together two aminoporphyrins with an isophthalic acid derivative. The porphyrins differ in the substitution pattern on the __meso__ phenyl groups, that is, __ortho__, __meta__, or __para__. Titrations carried out
Excitation of the title compound (DABCO) in a glow dlschargc gave at low voltage the fluorescence which has been assigned by others to an optically-forbrdden, low-lying, singlet state. with increasing voltage, the vrolet bands of the CN radical were also observed. Addition of He or AI strongly enhan