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Chloro complexes, osmium

Chlorothionitrene complex, osmium, 37 262 Chloro(trifluoromethyl) peroxide, 16 144 Chlorotrimethylsilane, reaction with hexafluoro-acetone, 30 225... [Pg.47]

Os(iii) Tp Osmium chloro complexes/redox chemistry 1999POL1587... [Pg.28]

The complex ion [Ru(bpy)(trpy)Cl] was first prepared as the perchlorate salt by the reaction of Ru(bpy)Cl4 with trpy in 25% aqueous ethanol, and more recently in 75% aqueous ethanol. It has also been prepared from Ru(CO)2(bpy)Cl2, trpy, and trimethylamine oxide in 2-methoxyethanol. A method in which the readily prepared RuftrpylClj complex is used as an intermediate is more convenient, and it is this new method that is described here. (2,2 -Bipyridine-A(,A( )chloro(2,2 6, 2"-terpyridine-Al,Al, N")osmium(II) chloride has been reported and is prepared from Os(bpy)Cl4" and trpy in ethylene glycol. (2,2 -Bipyridine-N,Al )chloro 2,2 6, 2"-terpyridine-Al,N, yV")osmium(II) chloride may also be prepared by the reaction of Os(trpy)Cl3 with bpy in ethylene glycol. However, the insolubility of Os(trpy)Cl3 in this solvent makes the procedure used for the ruthenium analog less desirable, and the literature method has been used without major modification. Reaction of the chloro complexes With hot... [Pg.299]

All four halide ions from octahedral complexes with the metal. Fluorides or fluoro complexes are known for osmium(VII) to osmium(IV) inclusive, with rather tenuous evidence for OsFj OsF is a rare example of seven coordination for the metal. The other halides prefer the IV and III states, though osmium(V) chloride and chloro complexes have recently been made and also [OsBr ]". Although [RuFs] " is well known there is no osmium analogue, in keeping with the general tendency of third-row elements to display higher oxidation states than their second-row partners. [Pg.3978]

Ruthenium, osmium, rhodium, and iridium form octahedral MClj" chloro complexes which, in aqueous solution, usually exist as chloro-aquo mixed species of the general composition [MCl6 ,(H20)J ( c = 1-6). Ruthenium and osmium also form complexes of the type [MCl6 t(H2P),] (jr = 1-6) and oxygen-bridged complexes such as [(RuCl5)20] . In many cases, complexes of the PGM are kinetically inert [4]. [Pg.523]

The metals osmium and ruthenium can be selectively oxidized to their tetroxides and separated by extraction with carbon tetrachloride [24]. Reference 24 also deals with enrichment procedures of palladium, rhodium, iridium, and platinum chloro complexes from hydrochloric acid solutions... [Pg.527]

Ruthenium is produced mainly from an anode slime yielded when crude copper or crude nickel, obtained from nickel sulfide ores, is electrolytically refined. The anode slime contains precious metal elements. It is treated with hot aqua regia and platinum, palladium and gold are separated as their chloro complexes. Then, by nitric acid treatment, fusion treatment with NaHS04, and fusion treatment with Na202, silver, rhodium and iridium are separated. The residual ruthenium and osmium salts are dissolved in water, and the osmium is separated by treatment with chlorine, hydrochloric acid and nitric acid. The ruthenium salt is treated with ammonium chloride to afford a ruthenium salt ((NH4)3RuCl6), and the reduction with hydrogen yields ruthenium powder [1,4-6]. [Pg.335]

In the catalytic reaction, however, the dependence on reductant concentration differs from that previously, with retardation of the rate after an optimum value. The evidence for an initial osmium(vra)-tin(n)-chloro-complex has been substantiated by spectrophotometric studies. [Pg.28]

SC, Thiocarbonyls, osmium, 26 185-187 SC4Hb, Thiophene, tetrahydro-gold complexes, 26 85-87 SCjHj, 2,4-Pentadienthial osmium complex, 26 188 SC H6, Benzenethiol osmium complex, 26 304 SClF,0,PtCiiHio, Platinum(II), chloro-bis-(triethylphosphine)(trifluoromethane-sulfonato)-cis-, 26 126... [Pg.442]

Peacock AFA, Habtemariam A, Moggach SA, Prescimone A, Parsons S, Sadler PJ (2007) Chloro half-sandwich osmium(II) complexes influence of chelated N, N-ligands on hydrolysis, guanine binding, and cytotoxicity. Inorg Chem 46 4049 -059... [Pg.50]

The chemistry of osmium fluorides and fluoro complexes differs sufficiently from that of the chloro, bromo and iodo species to warrant separate treatment here. The early review of Canterford and Colton is still useful for the general halide chemistry of the element.736... [Pg.609]


See other pages where Chloro complexes, osmium is mentioned: [Pg.46]    [Pg.46]    [Pg.790]    [Pg.226]    [Pg.9]    [Pg.123]    [Pg.193]    [Pg.524]    [Pg.561]    [Pg.321]    [Pg.1005]    [Pg.1008]    [Pg.524]    [Pg.561]    [Pg.4015]    [Pg.385]    [Pg.90]    [Pg.240]    [Pg.413]    [Pg.435]    [Pg.441]    [Pg.43]    [Pg.235]    [Pg.10]    [Pg.143]    [Pg.195]    [Pg.258]    [Pg.260]    [Pg.269]    [Pg.533]    [Pg.534]    [Pg.562]    [Pg.563]    [Pg.564]    [Pg.594]    [Pg.617]   
See also in sourсe #XX -- [ Pg.297 , Pg.298 ]




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Chloro complexes

Complexes chloro complex

Methane chloro-, osmium complex

Osmium complexes

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