... Nine and six equivalent methyl protons of [M(MPT)] 2+ and [M(TMPC)] 2+ , respectively ... It has been shown that a strong temperature dependence of 31 P chemical shifts has ... versus distances at which protons are shifted but not substantially broadened.(42, 43) As reported for Dy ...
[Foroozesh, Maryam; Primrose, Ginny; Guo, Zuyu; Bell, L. Chastine; Alworth, William L.; Guengerich, F. Peter Chemical Research in Toxicology, 1997 , vol. 10, # 1 p. 91 - 102]