Supported transition-metal catalysts for the C-C coupling reaction between ethene and diazoalkanes was written by Schneider, M. E.;Moehring U.;Werner, H.. And the article was included in Journal of Organometallic Chemistry in 1996.COA of Formula: C8H16Cl2Ir2 This article mentions the following:
The preparation of series of immobilized transition-metal catalyst are reported. The catalysts were obtained by chemisorption either Rh(I) complexes [MX(C2H4)2]n (M = Rh, Ir; X = Cl, OAc, acac, f3-acac, f6-acac) on SiO2 or MgO supports. The oxides were also activated by SiCl4 or TiCl4 to give support materials in which the acidic nature of the surface is substantially increased. The activity of the immobilized catalysts was tested, particularly in the reaction of ethene with diphenyldiazomethane which yields a mixture of 1,1-diphenylpropene (8) and 1,1-diphenylcyclopropane (9). The most active and most selective (highest ratio 8:9) catalyst B1 was formed from support material B (SiO2 activated by SiCl4) and [RhCl(C2H4)2]2 (1) and both the activity and selectivity of B1 was comparable with that of complex 1 in solution In contrast, the supported catalysts A2, D2 and A3, D3 obtained from [Rh(OAc)(C2H4)2]2 (2) and [Rh(acac)(C2H4)2] (3) and silica (A) and MgO (D) were less active than compounds 2 and 3 in solution The immobilized catalysts A6, A7, D7 and E7, which were generated from the chloro- and acetatoiridium(I) complexes [IrCl(C2H4)2]2 (6) and [Ir(OAc)(C2H4)2]2 (7), possessed a lower activity than the Rh counterparts. With diazoalkanes other than Ph2CN2, the activity of the supported catalyst B1 was partly higher and partly lower than that of 1 in the homogeneous phase. In the experiment, the researchers used many compounds, for example, Chlorobis(ethylene)iridium(I) dimer (cas: 39722-81-1COA of Formula: C8H16Cl2Ir2).
Chlorobis(ethylene)iridium(I) dimer (cas: 39722-81-1) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).COA of Formula: C8H16Cl2Ir2
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics