Hydridocobalt Complexes with Nitrogen Ligands

The use of the anionic tris(pyrazolyl)borate ligand afforded the possibility to obtain the neutral unsatured 15-electron cobalt(n) complex 19. This compound was able to react with CO leading to a carbonyl derivative, or with ethylene (at elevated temperature, however) to give a 7 1 mixture of the alkyl and an -ethene cobalt complexes. The 

A recent reinvestigation of the proton transfer to cobalt(i) macroeycle (raf-LCo(I), see Equation (3)) using a high-pressure pulse radiolysis technique led to observed accelerated reaction forming 20 when the pressure was increased.  

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