C. Lin et al., CONTINUOUS SPECTROSCOPIC AND REDOX TUNING OF DINUCLEAR COMPOUNDS - TRAKIS(MU-N-N'-DIARYLFORMAMIDINATO)DIRUTHENIUM(II) RAKIS(MU-N-N'-DIARYLFORMAMIDINATO)DIRUTHENIUM(III), Chemistry Letters, (8), 1997, pp. 753-754
The color of the Ru-2(mu-N,N'-diarylformamidinato)(4)Cl series display
s a dramatic red-shift as the electron-withdrawing power of aryl-subst
ituent is increased.