SPONTANEOUS AND PHOTOINDUCED FORMATION OF RADICAL-ANIONS IN THE REACTION OF BOROHYDRIDES WITH UNSATURATED-COMPOUNDS

Citation
M. Lucarini et al., SPONTANEOUS AND PHOTOINDUCED FORMATION OF RADICAL-ANIONS IN THE REACTION OF BOROHYDRIDES WITH UNSATURATED-COMPOUNDS, Perkin transactions. 2, (11), 1993, pp. 2083-2087
Citations number
34
Categorie Soggetti
Chemistry Physical","Chemistry Inorganic & Nuclear
Journal title
ISSN journal
03009580
Issue
11
Year of publication
1993
Pages
2083 - 2087
Database
ISI
SICI code
0300-9580(1993):11<2083:SAPFOR>2.0.ZU;2-F
Abstract
The spontaneous and photoinduced reactions of tetrabutylammonium boroh ydride, Bu4NBH4, with a number of quinones, ketones, cyano derivatives and nitrogen-containing heteroaromatic bases have been studied by mea ns of EPR spectroscopy in benzene and in ethereal solvents. In the abs ence of UV irradiation, formation of radical anions resulting from ele ctron transfer from the borohydride negative ion, BH4-, to the organic substrate has been detected with compounds having reduction potential s less negative than -1.5 V vs. SCE. With the less easily reducible co mpounds, UV irradiation leads in some cases to radical anions produced by photoinduced ET and in other cases to radical adducts of the boran e radical anion, BH3.-.