Anisotropy-----------------------effects on chemical shift

Pi-complexing is most commonly used to rationalize effects observed in aromatic solvents. The most frequent evidence cited is magnetic anisotropy effects on chemical shifts in the solute molecule. As was the case for hydrogen bonding no quantitative correlations with substantive parameters such as ultraviolet spectral shifts have been attempted. 

Examples of flip and rearrangement processes of co-ordinated allyl have appeared in this section. The former is apparent in an extensive investigation into the effects of allyl substituents on the configuration of the allyl in I(/i -C6H5)(A -allyl)Mo(CO)2] and [(/z -indenyl)(/z -allyl)Mo(CO)2] and some tungsten analogues. Anisotropy effects on chemical shifts of the allyl protons in the indenyl complexes allow conclusive identification of (8) and (9). 

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

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