Towards oxalate-bridged iron(ii), cobalt(ii), nickel(ii) and zinc(ii) complexes through oxotris(oxalato)niobate(v): An open air non-oxidizing synthetic route

1. Oliveira, W.X.C.
2. Pereira, C.L.M.
3. Pinheiro, C.B.
4. Lloret, F.
5. Julve, M.