79466-89-0Relevant academic research and scientific papers
Improved synthesis of seven-coordinate molybdenum(II) and tungsten(II) isocyanide complexes. Deaikyiation of coordinated tert-butyf isocyanide
Giandomenico, Christen M.,Hanau, Lawrence H.,Lippard, Stephen J.
, p. 142 - 148 (2008/10/08)
A general, high-yield synthesis of seven-coordinate cations [M(CNR)6X]+, [Mo(CNR′)6I]+, and [M-(CNR)7]2+, where M = Mo, W; R = alkyl; R′ = aryl; X = Cl, I, CN, has been developed. The synthetic procedure includes the oxidation of the appropriate M(CNR)3(CO)3 species with a mild reagent, followed by displacement of carbon monoxide with isocyanide. The oxidant PhICl2 was found to be especially convenient in this procedure. This method can be used to prepare 1-20 g of crystalline products in good yields. Mixed halo-carbonyl-isocyanide products (CO)yXz(2-z)+, x + y + z = 7, may also be obtained by this synthetic route. A novel dealkylation reaction of a coordinated t-BuNC ligand occurs when heptakis(tert-butyl isocyanide)molybdenum(II) or -tungsten(II) is refluxed in ethanol. The products are the cyanohexakis(tert-butyl isocyanide)metal(II) cations.
