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Structure of [2,6-(2,6-C6H3R2N = CH)2-C6H3]-DyCl2(THF)2 (DyNCN) molecule with the Dy-C bond highlighted in orange. Blue, Dy; green, Cl; black, C; blue, N; red, O. H atoms and a THF solvent molecule are omitted for clarity. Complex LuNCN exhibits analogous structure. Coordination bond distances (Å) for DyNCN: Dy-C = 2.3933(25), Dy-Cl = 2.5960(8), Dy-N = 2.6689(24) and Dy-O = 2.4484(20). Inset: The structure of the NCN-pincer ligand [2,6-(2,6-C6H3Et2N = CH)2-C6H3]−.
