✦ LIBER ✦

Substituent and solvent effects on the lifetimes of hydrocarbon-based biradicals

✍ Scribed by Matthew B. Zimmt; Charles Doubleday Jr.; Nicholas J. Turro

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 335 KB
Volume: 134
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(87)87191-9

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✦ Synopsis

Nanosecond transient absorption studies of the lifetimes (5) of several substituted 1 ,n-diphenyl-1 ,n-diyls are reported in polar and non-polar solvents. A para-bromine substituent significantly shortens r. Substitution of OH in the l-position makes the lifetime highly solvent dependent. The substituent effect and the dependence of r on biradical chain length is discussed in terms of spin-orbit coupling in the biradical.

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