59Co chemical shifts

Another example is the linear correlation of the 59Co chemical shifts of the catalyst with the regioselectivity of a trimerization reaction of acetylenes [15]. 

The application of 59Co n.m.r. spectroscopy to the study of cobalt(m) complexes is beginning to expand.285,286 An n.m.r. study of the stereoisomers of propane-1,2-diamine (pn), en, acac, CF3acac, etc., showed that the chemical shifts do not appear to be related to the absolute configuration, but that larger linewidths are observed with lower symmetry complexes 286 The chemical shifts are larger for ob-lel than for mer-fac isomerism in Co(pn)3 +. 285... 

Some less frequently encountered nuclides, such as 57Fe and 59Co, have chemical shift ranges of more than 10,000 ppm, hence encompass a very large frequency range in spite of smaller magnetogyric ratios. The chemical shift of monatomic 129Xe gas is very sensitive to its environment, and hyperpolarized xenon (Section 2.5) can be used to probe adsorption sites in solids. 

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