Controversy about the reference compound for correct chemical shift determination of 195Pt nuclei.
Several groups exploring the (195)Pt NMR in solids, including metallic and magnetic materials, use different standards for chemical shift (Knight shift) determination. Commonly applied H(2)PtCl(6) and Na(2)PtCl(6) (IUPAC delta scale) lead to considerable underestimation of the shifts since H(2)PtCl(6) has considerable own (195)Pt NMR shift due to its Van Vleck paramagnetism. In this Letter new results on (195)Pt NMR in heavy fermion system CeInPt(4) are presented and rationalized scale for the Knight shift determination is discussed.
Nowak
Bogdan
B
W. Trzebiatowski Institute for Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 WrocŁaw, Poland. B.Nowak@int.pan.wroc.pl