Tetrakis 2-methyl-2-propoxomagnesium Hexahydridoferrate II

In an inert atmosphere glove box, a 50 mL Schlenk flask is charged with [MgBr-(THF)2]4[FeH6l (0.200 g, 0.195 mmol) and a magnetic stirring bar. To this flask is added diethyl ether (12 mL) and lithium ferf-butoxide (0.062 g, 0.78 mmol). A reaction occurs within 1 h of stirring after 2 h, the yellow-brown mixture is 

A larger reaction (40 mmol) required mechanically stirring for 4h under hydrogen. 

We acknowledge support from the Army Research Office (under DAAH04-94-0312) and partially from the Petroleum Research Fund, administered through the American Chemical Society for support of this work. 

A soluble nonahydridodicobaltate species is found to be accessible, [(CoH3)2H3] -., see D. Linn, J. Kieser, J. Shearer, Dalton Trans., (2014), DOI 10.1039/C3DT53117A. 

The checkers reported that when the product is dissolved in CgDs, a small amount of white solid appears, which is readily removed by filtration. This material is likely LiBr and should not affect the use of the hydride. 

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