A Straightforward Electrochemical Approach to Imine- and Amine-bisphenolate Metal Complexes with Facile Control Over Metal Oxidation State

作者：Chapman Michael R; Henkelis Susan E; Kapur Nikil; Nguyen Bao N^*; Willans Charlotte E^*

来源：ChemistryOpen, 2016, 5(4): 351-356.

DOI：10.1002/open.201600019

• electrochemistry
• organometallic compounds
• salen
• Schiff bases
• synthesis

Synthetic methods to prepare organometallic and coordination compounds such as Schiff-base complexes are diverse, with the route chosen being dependent upon many factors such as metal-ligand combination and metal oxidation state. In this work we have shown that electrochemical methodology can be employed to synthesize a variety of metal-salen/salan complexes which comprise diverse metal-ligand combinations and oxidation states. Broad application has been demonstrated through the preparation of 34complexes under mild and ambient conditions. Unprecedented control over metal oxidation state (M-II/III/IV where M=Fe, Mn) is presented by simple modification of reaction conditions. Along this route, a general protocol-switch is described which allows access to analytically pure Fe-II/III-salen complexes. Tuning electrochemical potential, selective metalation of a Mn/Ni alloy is also presented which exclusively delivers Mn-II/IV-salen complexes in high yield.

• 出版日期2016-8