Chemical Physics Letters, Vol.328, No.3, 263-269, 2000
C-13 CP/MAS NMR study of a genistein/piperazine complex
C-13 CP/MAS NMR indicates that piperazine forms a hydrogen bond with the C7-OH group of genistein. The hydroxyl proton is transferred to the piperazine nitrogen atom. It is shown that the I-I*-S model of the polarization transfer in isolated spin clusters is also valid for quaternary carbon atoms.