540 Chemie und zugeordnete Wissenschaften
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The near and far UV spectra of the aminoboranes (Me2N)n B X3-n, n = 1, 2, 3, Me=CH3, X= H, Me, F, Cl, Br are presented. In most of the monoamino boranes the π→π * transitions dominate. In the di- and triamino boranes there were additionally found a Rydberg series and some single Rydberg transitions, partly preceding the π→π * band. The Rydberg assignments were settled particularly by comparing the band positions of the compounds relatively to their ionization energies.