Cobalt-59 Nuclear Magnetic Resonance Study of Cobalt(III) Complexes. Empirical Rules for the Cobalt-59 Chemical Shifts and Line Widths of [CoIII(en)x(NH3)6−2xyLy]-type Complexes

Abstract
The cobalt-59 chemical shifts and line widths for about seventy cobalt(III) complexes of the [CoIII(en)x(NH3)6−2xyLy] (L= Cl, Br, NO2, N3, OH, H2O, CO3, and C2O4) type have been measured. The cobalt-59 chemical shifts of this type of complex are approximately represented by a simple relation: