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ËÖªµÀAlÆ×ÓÐʱ³ö²»À´ÐźŵÄÔÒò No signal was observed in the solution 27Al{1H} NMR spectrum of 4. This presumably results from extreme broadening of the signal due to coupling of the two quadrupolar aluminium nuclei (27Al: I = 5/2; 100% abundant). Similarly, no signals were observed in the 27Al{1H} NMR spectra of any of the Al-Al bonded compounds detailed below. |
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