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 analysis demonstrated that the complex was a pentacoordinate entity with the formula [Ni(triars)(diars)](ClO), where triars is the tridentate ligand [CHAs(CH)]As(CH), which was formed through the elimination of trimethylarsine.