1092707-02-2Relevant academic research and scientific papers
Cyclodiphosphazane cis-{(o-MeOC6H4O)P(μ-NtBu)} 2 as a bridging bidentate ligand: Synthesis, structures of heterometallic complexes, and halogen exchange between Rh-Cl and Cu-X (X = Br, I)
Chandrasekaran,Mague, Joel T.,Venkateswaran, Ramalingam,Balakrishna, Maravanji S.
, p. 4988 - 4997 (2007)
The mononuclear rhodium complexes of cyclodiphosphazane [(cod)RhCl{L-κP}] (1a) (L = cis-{(o-MeOC6H40)P(μ- NtBu)}2) and frans-[Rh(CO)Cl{L-κP}2] (1b) react in a 1:1 molar ratio with [AuCl(SMe2)] to form the heteronuclear complexes [(cod)RhCl{μ-L-κP,κP}AuCl] (2) and trans-[Rh(CO)-C1{μ-L- κP,κP}2(AUC1)2] (7), respectively, in quantitative yield. The reaction between la and CuCl afforded a tetranuclear complex [(cod)RhCl{μ-L-κP,κP)Cu(μ-Cl)]2 (3). Under similar reaction conditions 1 reacts with 2 equiv. of CuX (X = Br, I) to produce the heteronuclear complexes [(cod)RhBr(μ-L-κP,κP}Cu(μ-Br)] 2 (4) and [((cod)RhI(μ-L-κP,κP})2Cu(n-X)2Cu] (X ≈ 1:1 mixture of Cl and I disordered over both sites) (5), respectively, in which two molecules of 1a are bridged by the rhombic, disordered, mixed halide [Cu(μ-X)2Cu] (5: X = Br; 6: X = Cl, I) unit. The crystal structures of 4 and 5 confirm the halogen exchange between the Rh-Cl and CuX (X = Br, I) moieties which leads to the formation of Rh-Br and Rh-I bonds. The heterodinuclear RhI/PdII complex [(cod)RhCl(μ-L- κP,κP)η3-C3H5)] (6) was synthesized by the reaction of 1a with [PdCl(η3-C 3H5)]2 in a 2:1 ratio. Reaction of 1b with Cui leads to the formation of the tetranuclear complex [Rh(CO)I{μ-L-κP, κP)2Cu(μ-I)]2 (8) containing two terminal un-coordinated phosphorus(III) centers irrespective of reactant ratio and reaction conditions. Halogen exchange reaction which leads to the formation of the Rh-I bond was also observed during the preparation of complex 8. Wiley-VCH Verlag GmbH & Co. KGaA, 2007.
