Detail of "14523-22-9"

Reference

Rhodium complexes as catalysts for hydrosilylation crosslinking of silicone rubber

Rhodium complexes as catalysts for hydrosilylation crosslinking of silicone rubber. Heidingsfeldova, Marta; Capka, Martin (Inst. Chem. Technol., Prague 166 28/6, Czech.). J. Appl. Polym. Sci., 30(5), 1837-46 (English) 1985. CODEN: JAPNAB. ISSN: 0021-8995. DOCUMENT TYPE: Journal CA Section: 39 (Synthetic Elastomers and Natural Rubber) Vulcanization of silicone rubber compds. based on siloxanes contg. vinyl and Si-H groups catalyzed by [RhCl(CO)2]2 [14523-22-9], [RhCl(C2H4)2]2] [12081-16-2], [RhCl(1,5-COD)]2 [12092-47-6], [RhCl(NBD)]2 [12257-42-0], RhCl[P(C6H5)3]3 [14694-95-2], and Rh(acac)3 [14284-92-5] (1,5-COD = 1,5-cyclooctadiene, NBD = norbornadiene, acac = acetylacetonate) was studied with respect to the catalyst, solvent, and reaction conditions. The course of vulcanization as well as the crosslinking d. of the vulcanizate and the content of sol indicate that the above catalysts are comparable to, and in some cases even better than, the widely used hexachloroplatinic acid.

Alternative ligands

Alternative ligands. XXIII. Rhodium(I) complexes with donor/acceptor ligands of the type (Me2PCH2CH2)2SiX2 and (2-Me2PC6H4)SiXMe2 (X = F, Cl). Grobe, J.; Martin, R.; Krebs, B.; Henkel, G. (Anorg.-Chem. Inst., Westfael. Wilhelms-Univ., Muenster W-4400, Germany). Z. Anorg. Allg. Chem., 607, 131-8 (German) 1992. CODEN: ZAACAB. ISSN: 0044-2313. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 75 (Me2PCH2CH2)2SiX2 and (2-Me2PC6H4)SiXMe2 (X = F, Cl) react with [Rh(CO)2Cl]2 to give RhCl(CO)(Me2PCH2CH2)2SiX2 [X = F, Cl] and RhCl(CO)[(2-Me2PC6H4)SiXMe2]2 [I; X = F, Cl], resp. For (Me2PCH2CH2)2SiCl2 and (2-Me2PC6H4)SiClMe2 the Rh(I) complexes formed in the first step partly undergo oxidative addn. reactions of SiCl bonds yielding rhodium(III) compds. of low soly. Only for I (X = F) the coordination shifts Dd = d(complex)-d(ligand) and coupling consts. give some indication to possible Rh ? Si interactions. However, the mol. structure of I (X = F) detd. by x-ray diffraction does not show RhSi or RhF bonding contacts. The new compds. were characterized by anal. (C, H) and spectroscopic investigations (MS, IR, NMR). Crystal data; I, triclinic space group P1, a 8.769(4), b 8.893(3), c 10.402(2) ?, a 105.81(2), b 103.09(2), g 114. 14523-22-9 and 139772-63-7 are just another two chemicals used in this study.07(2)°, Z = 1, R1 = 0.0310, R2 = 0.0324. .