Synthesis and reactivity of aza-capped encapsulated cobalt(III) ions

Detection of 25-Hydroxyvitamin D3 with an Enzyme modified Electrode

“…The synthetic protocol was adapted from the literature [46]. In brief, NH 4 A dark orange-red solid was collected via vacuum filtration and was washed with 20:80 dichloromethane/hexane solutions until the filtrate was no longer green in color.…”

Embracing ligands. A synthetic strategy towards new nitrogen–thioether multidentate ligands and characterization of the cobalt(iii) complexes

“…Replacement of N donors with thioethers in the case of the sarcophagine complexes causes a positive shift in metal centred redox potentials ([Co (MeN 6 sar) 6 and Me 5 tricosatrieneN 6 , the position of the metal centred redox potential is predominantly influenced by steric factors due to the methyl substituents on each encapsulating arm rather than the composition of the donor set.…”

“…The imine bond is located between atoms N1 and C9. The Co-N imine bond (1.919(3) Å) ( Table 6) is seen to be significantly shorter than the Co-N amine bonds (1.974(3), Table 4 Selected interatomic distances (Å) and angles (Њ) for endo3ؒCl(PF 6 …”

Foreword to Professor Alan M. Sargeson Special Issue

“…The synthesis followed on from the groundbreaking publication reporting the analogous chemistry with ammonia, instead of nitromethane, as the capping reagent to create the first cage ligand sepulchrate complexed to Co III and Co II . [3,4] There can be few better examples of the elegance of Sargeson 'cage chemistry' than this. The extraordinary ease by which this reaction proceeded made a lasting personal impression and in the years to come I was drawn further into the field of metal-directed chemistry and macrocyclic ligand systems.…”