870101-01-2Relevant academic research and scientific papers
Synthesis and reactivity of trifluoromethyl isocyanide rhodium(I) complexes
Vicente, Jose,Gil-Rubio, Juan,Guerrero-Leal, Juan,Bautista, Della
, p. 5634 - 5643 (2008/10/09)
The complex trans- [Rh(CF3)(CNXy)2(PPh3)] (1) reacts with SO2, tetracyanoethylene (TCNE), or maleic anhydride (MA) to give the complexes [Rh(CF3)(CNXy)2(PPh 3)L] (L = SO2 (2), TCNE (3), MA (4)) and with CO or CF3CO2H to give, respectively, mixtures containing mainly [Rh(CF3)(CNXy)2(CO)(PPh3)] or trans-[Rh(CNXy)2(PPh3)2]CF3CO 2, which is prepared in better yield by reaction of trans-[RhCl(PPh3)2(CO)] with XyNC and NaCF 3-CO2. [Rh(CF3)(CNXy)3] (6) is prepared by reaction of [Rh(CF3)(CNXy)3(PPh3)] (7) with 35% H2O2 or, better, by reaction of [Rh(μ-OH)(COD)]2 with XyNC and Me3SiCF3. The reaction of 6 with tetracyanoethylene (TCNE) or maleic anhydride (MA) gives the complexes [Rh(CF3)-(CNXy)3L] (L = TCNE (8), MA (9)). The oxidative addition reaction of Mel or n-C4F9I with complex 6 gives the octahedral Rh(III) complexes [Rh(CF3)(R)I(CNXy) 3] (R = Me (10), n-C4F9 (11)). In an attempt to obtain single crystals of complex 11, a few crystals of [{Rh(CF 3)(n-C4F9)(CNXy)2} 2(μ-I)2] (12) were obtained. The crystal structures of complexes 2-4 and 12 have been determined by X-ray diffraction studies.
