energy levels / gas-phase lesser statistical probability / anisotropic chemical environments / chemical plausibility / paramagnetic metal coordination compounds / chemical compositions / chemical shielding ranges / chemical binding / extended spin systems / chemical shift / chemical environment / paramagnetic 3d metal ions / sp2-hybridized carbon chemical environments / chemical shift anisotropy / molecular energy levels / chemical process / large chemical shift anisotropy / unsaturated chemical environments / dissimilar chemical environments / chemical / metal ions / energy transfer / chemical environments / chemical structures / /