Mercury compounds ruthenium complexes

Manganese(VI) complexes, 109-111 Manganese(VII) complexes, 109-111 Marcasite, 1240 Mercury compounds ruthenium complexes, 280 Mesoperrhenates, 198 Mesoporphyrin iron complexes, 1266 Methemerythrin, 254 Molybdenum-iron-sulfur complexes, 241 MOssbauer spectroscopy iron, 1181... 

Indirect electroreduction with Ni, Co, and Fe complexes has been well studied, and will be discussed first. Furthermore, the synthetic use of palladium, rhodium, and ruthenium complexes as mediators in the electroreduction of organic compounds are finding increasing apphcations. Metallic complexes derived from chromium, manganese, molybdenum, tungsten, and rhenium have also been used as mediators for special conversions. Recently, tin, zinc, and mercury... 

Well-characterized 2-(chloromercurio) derivatives of 1-acetyl- and l-(phenylsulfonyl)pyrrole were prepared by reaction of HgCl2. These can be converted to />/s-(pyrrol-2-yl (mercury compounds or into ruthenium and osmium complexes by transmetallation. In all of these complexes there is coordination between the acetyl or sulfonyl oxygen and the metal, but the chelation is much tighter in the Ru and Os complexes <95JOM(491 )219> To date, the reactivity of these compounds has not been explored. 

Ruthenium complexes are often inexpensive, readily available, and active catalysts for the hydration of alkynes [177-179]. In contrast to most mercury and gold systems, several of the Ru-based catalysts displayed a propensity to generate the anti-Markovnikov hydration products. One of the more practical approaches to this anti-Markovnikov hydration chemistry was developed by Herzon (Scheme 2.115) [180]. His approach entailed the use of a ruthenium compound bearing a 5,5 -(bistrifluoromethyl)-2,2 -(bipyridine) as the supporting ligand. A variety of ruthenium complexes could be isolated, and at least one... 

The metal compounds found by BP to enhance the activity of an iridium catalyst fall into two categories (i) carbonyl or halocarbonyl complexes of tungsten [117,119], rhenium [118,119], ruthenium [116,117,119], and osmium [116,117,119] (ii) simple iodides of zinc, cadmium, mercury,... 

The phase-transfer-assisted permanganate oxidation of alkynes and alkenes has been reviewed. Terminal and internal alkynes are oxidized to 1,2-dicarbonyl compounds by the combined action of diphenyl disulphide, ammonium peroxidisulphate and water or by sodium periodate in the presence of ruthenium dioxide (equation 34). Other reagents for the conversion of acetylenes into 1,2-dicarbonyl compounds are hydrogen peroxide in the presence of (2,6-dicarboxylatopyridine)iron(II), the complex oxo(A, A -ethylenebissalicylideneiminato)chromium(V) trifluoromethanesulphonate (216)and ruthenium tetroxide as a mediator in electrooxidation. l-Acetoxyalkan-2-ones 217 are obtained by the oxidation of terminal acetylenes with sodium perborate and mercury(II) acetate in acetic acid ". Terminal alkynes give a-ketoaldehydes 218 on treatment with dilute hydrogen peroxide, combined with mercury(II) acetate and sodium molybdate or sodium tungstate under phase-transfer conditions. ... 

Hydrogenation using the rhodium complex may involve the formation of colloid particles, as it was shown that the reaction is inhibited by metallic mercury [167]. Selective hydrogenation of the carbonyl group in a,P-unsatu-rated carbonyl compounds can be done with immobilized ruthenium or iridium complexes by using either the supported aqueous phase technique... 

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