Rhodium clusters iron containing

Clusters which contain two (or more) D-Block metals include a series of new indenyl complexes containing chromium and rhodium atoms the complex (C0)4pe-C(NMe2 )OTi( NMe2) [0C(NMe2) ]2 ( 0)3 prepared by Petz " and the anionic iron-iridium clusters [FeIr4(C0) and [Fe2lr4(CO) g] " (including their characterisation and structures... 

Hydrothermal methods, for molecuarlar precursor transformation to materials, 12, 47 Hydrotris(3,5-diisopropylpyrazolyl)borate-containing acetylide, in iron complex, 6, 108 Hydrotris(3,5-dimethylpyrazolyl)borate groups, in rhodium Cp complexes, 7, 151 Hydrotris(pyrazolyl)borates in cobalt(II) complexes, 7, 16 for cobalt(II) complexes, 7, 16 in rhodium Cp complexes, 7, 151 Hydrovinylation, with transition metal catalysts, 10, 318 Hydroxides, info nickel complexes, 8, 59-60 Hydroxo complexes, with bis-Cp Ti(IV), 4, 586 Hydroxyalkenyl complexes, mononuclear Ru and Os compounds, 6, 404-405 a-Hydroxyalkylstannanes, preparation, 3, 822 y-Hydroxyalkynecarboxylate, isomerization, 10, 98 Hydroxyalkynes, in hexaruthenium carbido clusters, 6, 1015 a-Hydroxyallenes... 

The skeleton of W4(/Lt4-C)(0)(0H2Bu )i2 is given in 7-XII. The carbon atom is frequently found as a discrete C4- unit encapsulated in scores of clusters of metals such as iron, ruthenium, osmium, cobalt, rhodium, nickel, and rhenium but a few contain encapsulated Q units (see later). 

The first syntheses of carbonyl clusters containing an interstitial nitrogen atom involved the use of NO" " [Eqs. (45) and (46)] (3). In the case of rhodium, the major product was suggested to be [Rli6(CO)i4(NO)], but no further data have been reported on this. The reaction of NO with the mixture of iron carbonyls, Fe(CO)s and [Fe2(CO)8] , yielded two clusters... 

The initial observation of remarkable size-dependent reactions of deuterium with clusters of cobalt and niobium was rapidly followed by other reports of dihydrogen addition reactions with clusters of many metals, in some cases containing more than 100 atoms. Further work was reported for nio-bium " and cobalt as well as for iron, vanadium, " nickel, platinum, rhodium, tantalum, and aluminum. ... 

Platinum-iron on alumina catalysts were characterized by Mbssbauer spectroscopy (Section 4) and their activity tested. Iron in clusters with high Pt Fe ratios, about 5, and fully combined with platinum, was catalytically inert for the CO-H2 synthesis reaction, attributed to a decrease in the electron density of the iron as indicated by the Mbssbauer isomer shift. The direction of electron transfer was opposite to that proposed for alkali-metal promoted iron catalysts. At low Pt Fe ratio, 0.1, ferromagnetic iron as well as Fe " ions and PtFe clusters were produced and dominated the activity/selectivity pattern. Rhodium on silica catalysts produced C2-compounds containing oxygen, specifically acetic acid, acetaldehyde and ethanol, with methane as the other major product. The addition of iron moved the C2-product formation sharply in favour of ethanol and now methanol was also formed. ... 

Re2(CO)io]/ as well as cluster carbonyls of iron, ruthenium, osmium, rhodium, and iridium. " Catalysts that are obtained in basic aqueous-methanol solution of metal carbonyls of the type M(CO)6 (M = Cr, Mo, W) and M3(CO)i2 (M = Ru, Os) are active even in the presence of sodium sulfide.Most commonly utilized solvents have been mixtures of water with alcohols, methoxyethanol, pyridine, etc. (mainly in the case of neutral solutions and those containing bases, such as KOH, K2CO3). Catalysts that are active in acidic media include Rh2Cl2(CO)4- -HCl- -NaI (solvent H0Ac-hHCl + H20),<"" [Rh(bipy)2]Cl, " > and... 

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