Steric Interference on the Redox-conjugated Pyrimidine Ring Rotation of Mono- and Dinuclear Copper Complexes with (4-Methyl-2-pyrimidinyl)imine Ligands

A mononuclear copper(I) complex with N-[(4-methyl-2-pyrimidinyl)methylene]-p-toluidine (1·BF4) and a dinuclear copper(I) complex with N,N′-bis[(4-methyl-2-pyrimidinyl)methylene]-p-phenylenediamine ...