C!wmical shielding parameters are reported for the metallocenes of Fe, Ru, Mg; biscyclopentadionyl complexes Cp{sub 2}TiCl{sub 2}, (CpMe{sub 5}){sub 2}CoCl, and (CpMe{sub 5}){sub 2}Fe and bisbenzene chromium. The shielding tensor anisotropy seems to reflect the character of bonding. Motion detected in many of these compounds and has been used in some cases to assign the shielding tensor principle directions.
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Wemmer et al. (1981) studied this question.