Neutral Ru(II) complexes with the formula trans-[Ru(trpy*)(L 2)(pcyd)] have been prepared, where trpy* = 4,4′,4″-tri-tert-butyl-terpyridine, L 2 = 2-pyrazinecarboxylato (pca), 2-pyridinecarboxylato (pic), acetylacetonato (acac) and pcyd = 3-chlorophenylcyanamido (3-Clpcyd), 2,3-dichlorophenylcyanamido (2,3-Cl 2pcyd), 2,4,6-trichlorophenylcyanamido (2,4,6- Cl 3pcyd), 2,3,4,5-tetrachlorophenylcyanamido (2,3,4,5-Cl 4pcyd) and 3,4,5-trimethoxyphenylcyanamido (3,4,5-(OMe) 3pcyd). Spectroelectrochemistry was performed on these Ru(II) complexes to obtain the visible absorption spectrum of the Ru(III)-cyanamide ligand-to-metal charge transfer chromophore. The Ru(III)-cyanamide metal-ligand coupling elements of these complexes were compared to other Ru(III)-cyanamide complexes.

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Inorganica Chimica Acta
Ottawa-Carleton Chemistry Institute

Mapolelo, D.T. (Daphne T.), Al-Noaimi, M. (Mousa), & Crutchley, R. (2006). Neutral ruthenium(II) complexes of phenylcyanamido ligands. Inorganica Chimica Acta, 359(5), 1458–1464. doi:10.1016/j.ica.2005.11.009