X-ray crystal structure of Ir

Figure 15.28 X-ray crystal structure of [Ir(r 2-C60)(CO)Cl(15.6)2] showing self-inclusion.47...

Relative rates of O2 uptake by tra/is-[Ir(X)(CO)(PPh2R)2] ( = Cl, Br, I R = Ph, Et, Me) in CHjCh follow the order R = Me > Et > Ph and X = I > Br > Cl > F. If dioxygen addition is considered as an acid-base reaction (metal complex = Lewis base), then factors which increase the electron density at the metal centre should (in the absence of unfevourable steric effects) enhance the addition of O2 (reaction 90). The results suggest that as the basicity of the phosphine ligand increases and the electronegatively of X decreases, the rate of O2 addition also increases. The X-ray crystal structure of [Ir(Cl)(C0)(02)(PPh2Et)2] reveals a side-on coordination with the O2 centre, CO and Cl moieties defining the equatorial plane, or a distorted octahedral iridium(III) system with... 

The preparation and X-ray crystal structures of [Ir(Ti -trisS3)-(n -cod)] TrisSa = tris(diphenylthiophosphinoyl)methanido)and [Rh [Ph2P(0) l2[Ph2P(S) ]C) (Ti -cod) ]. PrOH have been reported. 

The structure of [IrCl2(edmp)2]PF6, (193), edmp = (2-aminoethyl)dimethyl phosphine, confirms that the coordination geometry around the Ir center is approximately octahedral. If the edmp ligand is replaced by edpp, edpp = (2-aminoethyl)diphenylphosphine, then the isomeric form (194) may be isolated and structurally characterized. The X-ray crystal structure of fac-[Ir(edmp)3]Cl3 5H20 has also been reported.338... 

Fryzuk demonstrated the high reactivity of the amide function present in the P-amide-P pincer Ir complex 60 towards dihydrogen [28]. In fact, heterolyhc dihydrogen activation by the Ir(III)-amide bond present in the pincer complex 60 led to the stable Ir(III)-alkyl-amino-hydrido complex 61, as outUned in Equation 6.16. The X-ray crystal structure of the amine product is depicted in Figure 6.14. 

RuC1 (CH3CN)3 is made from RuCl with and CH CN it is brick-red. The X-ray crystal structure of RuCljCCHjCbOj.dCHjCN shows a mer-octahedral geometry. The electrochemistry of the complex was stucUed as were IR and mass spectra. As RuCljCCHjCbOj/aq. L CIO )/ electrodes it oxidised tetralin to tetralone [786].. ... 

Amides and related compounds have been thoroughly investigated as ligands for alkali metals. Studies in solution have been made using various physicochemical techniques these, and MO calculations, show that the interaction of amides with M+ is via the carbonyl function.56,57 This leads to a delocalization of the amide N electron pair and so it is possible to follow the decrease in C—O, and the increase in C—N, bond orders using IR spectroscopy. X-Ray crystal structures of amide complexes have shown both types of complexation interaction to be present (Table 2). 

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