Redox-switchable tetra-copper assembly of N,N-, N,O-phenolate-phenanthroimidazolate bridging ligandsElectronic supplementary information (ESI) available: Experimental and physical methods; crystallography details; X-ray structures; DFT-calculations; magnetic models, EPR, UV/vis. CCDC 899793 and 899794. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c2dt32585c

A redox-active dianionic N , O -phenolate-imidazolate/ N , N -phenanthroline bridging ligand is used to form unique square-like neutral tetra-Cu( ii ) assemblies, the structural, magnetic, electronic and redox properties of which are herein described. A redox-active dianionic N , O -phenolate-imidazolate/ N , N -phenanthroline bridging ligand is used to form unique square-like neutral tetra-Cu( ii ) assemblies, the structural, magnetic, electronic and redox properties of which are herein described.