Preparation, Crystal Structure and Spectroscopic Studies of Mixed valence Compound [(Cp4i Rh)2 (μ-Cl)3] [Rh(CO)2Cl2]

[(Cp4i Rh)2(μ-Cl)3] [Rh(CO)2Cl2] (Cp4i = tetraisopropyl-cyclopenta-dienyl) has been prepared and its crystal is in the space group of Pbar with a= 0.9417 (8), b = 1.4806 (3), c = 1.5062 (2) nm, a = 92.980(10), β = 97.42(3), γ = 93.98 (3)°, V = 2.0735(18) nm3 and Z = 2. The crystal structure consists of a cation of [(η5-Cp4i) Rh (III)(μ-Cl)3 Rh (III) (η5-Cp4i)]+ and an anion of [Rh (I) (CO)2 Cl2]. The two bulky tetraisopropylcyclopentadienyl ligands are in the ecliptic conformation with angle of 10.19° between two cyclopentadienyl ring planes.