Boron-11 Decoupling Studies on the Proton NMR of C2B4H8
CALIFORNIA STATE UNIV LOS ANGELES LOS ANGELES United States
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With boron-11 decoupling experiments carried out at 19.2 Mc it is possible to selectively irradiate the high and low field proton nmr quartets. When the high field quartet is collapsed the rest of the spectrum remains unchanged. In striking contrast, collapse of the low field quartet is accompanied by a markedly sharpened bridge hydrogen region. Such observations are consistent only with the original Ht-B1 no bridge hydrogens assignment to the high field quartet.