1. Tridentate Chelate Compounds. II1
2. N. P. Buu-Hoi and G. Saint-Ruf, J. Chem. Soc., 2258 (1961).
3. All ultraviolet and visible absorption studies were performed on the Cary Model 14 Recording Spectrophotometer.
4. All fluorescence data were collected on the Aminco-Bowman Spectrophotofluorometer.
5. The spectrum was obtained on a solution containing 100 mg. / 0.7 ml. on the Varian A-60 Nuclear Magnetic Resonance Spectrometer.