Photoelectron Spectroscopy of Heterocycles. Polypyridines
نویسندگان
چکیده
The photoelectron (PE) spectra of 2,2'-bipyridine 1, 2 ,2 ' :6 ' ,2"-terpyridine 2, and 2,2 ' ,2" ,2" / tetrapyridine 3 have been measured using H e I radiation. For 1 — 3 standard SCF LCAO MO calculations wer also performed. Comparison of P E spectra and these calculations allowed the assignment o f Ti-ionizations and indirectly also the nitrogen lone pair ionizations in 1 — 3. Factors influencing the conformations o f 1 — 3 in the gas phase are also mentioned. H G F E D C B A X \
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