Crystal Structure and Synthesis of Cis - Bis -{(Endo - 3 - diphenylphosphino - (lR) (+) Camphor)}Dichloro Iridium (I)

In [his research endo-3-diphenylphosphino -(IR)(+) camphor as a ligand was synthesised. 1.3 mmol of IrC12(NCPh)2 was added to the solution of 2.7 mmolligand in 15 ml dicloromethane, and after one hour it was evaporated at reduced pressure. By addition of methanol microcrystals of yellow complex of lridium(I) with 78% yield was obtained. Crystal structure of the above complex are orthorhombic, space group P212121 with a = 380.3(2), b = 1785.1(3), c = 19.228(4)A and z =4, R = 0.0453 for 4438 observed reflections. The structure shows that PPh2 groups are endo and phosphines in cis position.