Azides of Rhodium

All azide compounds of this element are complexes, namely, several mixed azide bridged complexes of Rh(I) [163], several mixed azido complexes of Rh(III) [164,165], and a hexaazidorhodate(III). 

The complex anion hexaazidorhodate(III), [Rh (N3)6] is known as tetraphenylarsonium salt [139] and as tetrabutylammonium salt [162]. For preparation of the former, see Table IX. The tetrabutylammonium hexa-azidorhodate(III) is obtained from the [RhCle] complex by ligand exchange 0.2 g Na3RhCl6 I2H2O is dissolved in 25 ml water and added to a solution of 1.5 g sodium azide in 50 ml water. The mixture is kept at 40°C for 1 hr and then precipitated with 1 g tetrabutylammonium bromide. The faintly red crystals are washed with alcohol and, from a methylene chloride solution, reprecipitated with ether [162]. 

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