| 1 | Author | Bernd Wrackmeyer | Requires cookie* |
| Title | Vergleich zwischen n B-und 13 C-chemischen Verschiebungen dreifach koordinierter Borverbindungen und Carbenium-Ionen Comparison between n B and 13 C Chemical Shifts of Three-Coordinate Boron Compounds and Carbenium Ions  | ||
| Abstract | The relationship between U B chemical shifts (<5 n B) of trigonal boranes and 13 C® chemical shifts (<5 13 C®) of carbenium ions was found to be more complex than previously reported. The trends observed allow for the comparison of (pp) n bonding between boron and suitable substituents with the TT-charge derealization in carbenium ions. In case of the ferrocenyl boranes and ferrocenyl carbenium ions the markedly different trend in the shielding of 11 B and 13 C® favours a fulvene-like structure for the substituted cyclopenta-dienyl ring in the latter. Structural features are analogously reflected by <5 U B and d 13 C® data for both series of compounds. Comparison of <5 13 C data of organoboranes and carbe-nium ions can be useful in conformational studies. Einführung | ||
| Reference | Z. Naturforsch. 35b, 439—446 (1980); eingegangen am 5. November/14. Dezember 1979 | ||
| Published | 1980 | ||
| Keywords | Boranes, Carbenium Ions, 13 C NMR Spectra, U B NMR Spectra | ||
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