Paramagnetic shifts induced in the 13C n.m.r. spectrum of borneol by tris-(2,2,6,6-tetramethylheptanedionato)praseodymium, Pr(tmhd), have been used in a total assignment; these shifts and those induced by the corresponding europium and terbium complexes agree well with values calculated on the basis that their origin is of a pseudo-contact nature.
J. Briggs, F. A. Hart, G. P. Moss and E. W. Randall, J. Chem. Soc. D, 1971, 364 DOI: 10.1039/C29710000364
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