Rhodium pentadienyl complexes

Pentadentate 2,2 6, 2"-terpyridine, 30 107 Pentadiene complexes with iron, 12 255-257 with rhodium, 12 295 with silver, 12 340 Pentadienyl complexes with group VIB metals, 12 224, 225 with group VIIB metals, 12 240 JV,Af,/V,lV",N"-Pentaethyldiethylenetriamine, 42 76... 

The dichlororuthenium arene dimers are conveniently prepared by refluxing ethanolic ruthenium trichloride in the appropriate cyclohexadiene [19]. The di-chloro(pentamethylcyclopentadienyl) rhodium dimer is prepared by refluxing Dewar benzene and rhodium trichloride, whilst the dichloro(pentamethylcyclo-pentadienyl)iridium dimer is prepared by reaction of the cyclopentadiene with iridium trichloride [20]. Alternatively, the complexes can be purchased from most precious-metal suppliers. It should be noted that these ruthenium, rhodium and iridium arenes are all fine, dusty, solids and are potential respiratory sensitizers. Hence, the materials should be handled with great care, especially when weighing or charging operations are being carried out. Appropriate protective clothing and air extraction facilities should be used at all times. 

On the basis of the infrared spectra, the alkenyl complexes are considered to have a structure of the type shown in Fig. 23a, with a bridging CO group. This structure is related to those of the rhodium cyclo-pentadienyl adducts Rh3(C5H5)3(alkyne)(CO) (137). In the rhodium... 

A. J. Rest, I. Whitwell, W. A. G. Graham, J. K. Hoyano, and A. D. McMaster, Photo-activation of Methane at 12 K by (jy5-Cyclopentadienyl)- and (//5-Pentamethylcyclo-pentadienyl)-dicarbonyl-rhodium and -iridium Complexes, J. Chem. Soc., Chem. Comm. 

P2RhC2jH47, Rhodium(I), carbonylphen-oxobis(triisopropylphosphine)-, 27 292 02SC,H, Benzenesulfonic acid, 4-methyl-, rhodium complex, 27 292 02SmCa,H4t, Samarium(II), bis(T) -penta-methylcyclopentadienyl)bis-(tetrahydrofuran)-, 27 155 OjYbCMHM, Ytterbium(H), bis(Ti -cyclo-pentadienyl)( 1,2-dimethoxyethane)-, 26 22... 

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