Iron cyanide inversion reaction

Absolute Configurations from Solution Reactions The Tris(diimine)iron(II)/Cyanide Inversion Reaction... 

Contradictory reports have appeared on the stereochemical course of the reaction between the [Fe(phen)3] + cation and cyanide ion. On the one hand optical inversion is reported - the first report of inversion at octahedral iron(n) - while on the other hand a total loss of optical activity is claimed. The earliest reference to the kinetics of the reaction of [Fe(phen)s] + with Qranide reported the rate law to be... 

From the final pond the concentrated brine (Table 1.3) with a density of about 1.25 g/cc was pumped nearly 4.8 km (3 mi 1.5 mi in 1967, Gadsby, 1967) to the processing plant in the town of Silver Peak. The plant had been converted from a silver ore cyanide-leach plant that had operated there from 1864-1961. In the conversion all of the tanks and settlers were rubber lined to reduce iron contamination in the product, and considerable new equipment was added. The solar pond brine was first reacted with lime to remove most of the residual magnesium and some of the sulfate and borate ions, and then a small amount of soda ash was added to precipitate most of the calcium from the lime reactions. The slurry from these operations was settled and filtered, and the overflow solution sent to storage tanks. From there the brine was pumped through filter presses to be totally clarified, and then heated to 93°C (200°F lithium carbonate has an inverse solubility) and reacted with dry soda ash and hot wash and make-up waters to precipitate the lithium carbonate product. Extra water was added to prevent salt from crystallizing, since the pond brine was samrated with salt. The lithium carbonate slurry was thickened in a bank of cyclones, and the underflow fed to a vacuum belt filter where it was washed and dewatered. The cyclone overflow and filtrate were... 

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