Tris ethylenediamine ruthenium II Chloride

Solid silver anthranilate is prepared as follows. A solution of 2.0 g (50 mmole) of NaOH in 10 mL of water is stirred for 10 minutes with a slight excess of anthranilic acid (7.0 g, 51 mmole). The excess undissolved anthranilic acid is removed by filtration and a solution of 8.5 g (50 mmole) of AgN03 in 6 mL of water is added to the filtrate. The slowly precipitated silver anthranilate is collected by filtration, washed with water, ethanol, and acetone, and dried first in the air and then on a vacuum line for 8 hours. The off-white solid is light and heat sensitive. 

The silver anthranilate (1.30 g, 5.33 mole) is slowly added with shaking to an ice-cold, deoxygenated slurry of 1.30 g (2.66 mmole) of [Ru(en)3] [ZnCl4] 

Studies of these complexes include reports of NMR,5 8 EPR,9 ORD and CD,10 and ESCA7 spectra, and chemical studies of the reactions of [Ru(en)3]2 with oxygen11 and Fe(III)4 and of electron exchange between the two oxidation states.4 

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