Later by X-ray crystallography, the complex was shown to be pentacoordinate with the formula [Ni(triars)(diars)](ClO), where triars is the tridentate ligand [CHAs(CH)]As(CH), arising from the elimination of trimethylarsine.
Subsequent X-ray crystallography studies confirmed that the complex exhibited a pentacoordinate configuration with the formula [Ni(triars)(diars)](ClO), where triars is the tridentate ligand [CHAs(CH)]As(CH), which was produced through the elimination of trimethylarsine.