Cobalt(III) Werner Complexes with 1,2-Diphenylethylenediamine Ligands #chempaper 226

I think this is a really nice study. They checked 80 crystal structures of [Co(en)3]3+ and then came up with this useful approach to catalyze the addition of malonate esters to nitroalkenes. Classical Werner complexes once again proved that they are very promising in catalysis.

http://pubs.acs.org/doi/full/10.1021/acscentsci.5b00035