Uv photoelectron spectrum of cyclobutadiene. free cyclobutadiene stable up to high temperatures

✍ Scribed by Jürgen Kreile; Norbert Münzel; Armin Schweig; Harald Specht

• Book ID: 103029397
• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 581 KB
• Volume: 124
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(86)85133-8

✦ Synopsis

The He1 photoelectron spectrum of cyclobutadiene (CB) has been obtained under conditions which demonstrate that free CB is stable up to temperatures of several hundred "C. A new experimental argument for the rectangular geometry of CB is presented. Shake-up structures are unimportant for the interpretation of the PE spectrum of CB. LNDO/S PERTCI, MNDO PERTCI and previous experimental vertical ionization energy estimates accord with the experimental data.