Über den Einfluss nichtpolarer Lösungsmittel auf Lage und Intensität von Absorptionsbanden in den Elektronenspektren apolarer Molekeln: II. Polyacetylene

✍ Scribed by Heinz Christen; Else Kloster-Jensen

• Publisher: John Wiley and Sons
• Year: 1973
• Tongue: German
• Weight: 604 KB
• Volume: 56
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19730560535

✦ Synopsis

Abstract

The dispersive interaction of nonpolar solutes with nonpolar solvents is investigated in model systems consisting of solutions of dimethyl‐tetraacetylene, di‐t‐butyl‐tetraacetylene, dimethyl‐pentaacetylene or di‐t‐butyl‐pentaacetylene in binary mixtures of cyclohexane/carbondisulfide or n‐pentan/carbondisulfide. For this purpose the ^1^Σ → ^1^Σ transition in the electronic spectrum of the solutions has been recorded. With increasing concentration of the more strongly interacting solvent component (i.e. carbondisulfide) bathochromic shifts δν of the transition frequency accompanied by a decrease in oscillator strength f~M~ are observed, which are consistent with calculated values based on a previously proposed exciton model [1].