A novel and easy way to prepare the Rh2(μ-SR)2(CO)4 and Rh2(μ-SR)2(CO)2(PR′3)2 complexes on a large scale

Kalck, Philippe; Senocq, François; Siani, Michel; Thorez, A.

doi:10.1016/0022-328x(88)80361-9

Cited by 13 publications

(1 citation statement)

References 8 publications

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“…However, no uniform products could be obtained by this method as it was not in all [Rh(CO) 2 Cl] 2 molecules that both "-Cl bridges were exchanged. A complete reaction was observed by Bolton et al 26 and Kalck et al 27 22 The existence of two isomers can be explained by a slow inversion around the sulfur atoms of the Rh 2 S 2 ring. 28 Of the three possible configurations of the ring, the one with the two siloxane cages on the sulfur in the axial position can be excluded from consideration by the size of the cage.…”

Section: [Rh(co) 2 Ss]mentioning

confidence: 77%

Silsesquioxanes as models of silica supported catalyst I. [3-(Diphenylphosphino)propyl]-hepta[propyl]-[octasilsesquioxane] and [3-mercapto-propyl]-hepta[propyl]-[octasilsesquioxane] as ligands for transition-metal ions

Hendan

Marsmann

1999

Appl. Organometal. Chem.

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The ligand [3‐(diphenylphosphino)propyl]‐hepta[propyl]‐[octasilsesquioxane] (dpps) can be prepared by reacting [3‐chloropropyl]‐hepta[propyl]‐[octasilsesquioxane] (cs) with KP(Ph)2. The transition‐metal complexes [Rh(CO)(dpps)2Cl], [Rh(COD)(dpps)Cl] and [Pt(dpps)2Cl2] are synthesized as models of functionalized silica‐gel surfaces. Without destruction of the siloxane cage, the intermediate compounds Hg(ss)2, and Pb(ss)2 are obtained from [3‐mercaptopropyl]‐hepta[propyl]‐[octasilsesquioxane] (ssH). Starting from Pb(ss)2, the transition‐metal complexes [Au(ss)(P(Ph)3)], [Rh(ss)(CO)2]2 and [Rh(ss)(COD)]2 are accessible. The compounds have been characterized mostly by 1H, 13C, 29Si and 31P NMR spectroscopy. Copyright © 1999 John Wiley & Sons, Ltd.

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