Triruthenium and Triosmium Complexes

Triruthenium and triosmium complexes obtained from functionalized alkynes Complexes containing ligands with methoxycarbonyl (or acetato) groups Complexes obtained upon CO insertion into M-C bonds Hydration-dehydration reactions of alkynols promofed by silica or alumina Osmium derivafives obfained from oxygenafed ligands... 

Triruthenium and triosmium complexes from sulfur-containing heterocycles... 

Triruthenium and triosmium complexes obtained from functionalized alkynes... 

Triruthenium and triosmium complexes with capping nitrogen ligands... 

Finally, the synthesis of hexaruthenium derivatives of Hampy has been achieved. The triruthenium aminopyridine complexes have been the subject of a recent review. This chemistry has been extended to other nitrogen ligands triruthenium and triosmium complexes of deprotonated di(2-pyridyl)amine have been obtained.In addition, a number of triruthenium derivatives of 2-amino-7,8-benzoquinoline have been synthesized. I24,i24a... 

Examples of O-alkylation have also been demonstrated for triruthenium and triosmium anionic clusters, as well as the tetrairon cluster Fe CO)] - (31-33). This reaction has considerable promise as an entry into many different methylidyne complexes through the replacement of the OR" group, eq. 20 (38). 

Bis(carbodiimido) complexes, with bis-Cp Ti(IV), 4, 583 Bis(catecholato)diboron, alkyne additions, 10, 727—728 Biscorroles, in organometallic synthesis, 1, 71—72 Bis(cyclodiyne) clusters, trirutheniums and triosmiums, 6, 772 Bis(cyclooctadienyl) chromium complexes, characteristics,... 

Dialkynyl ligands, in platinum(II) complexes, 8, 545 iV,iV-Diallylamine, via allyindium reagents, 9, 703-704 Diallyl clusters, in trirutheniums and triosmiums, 6, 773 gem-Diallyl esters, via indium-mediated allylation, 9, 677 Diallyl ethers, isomerization, 10, 90 Diamagnetic ylides, with gold(II), 2, 278 Diamides... 

E3.17 Synthesis and reactions of edge double-bridged triruthenium and triosmium cluster complexes... 

A number of publications detail both triruthenium and triosmium chemistry. Thus in a series of papers, Bruce and co-workers describe the preparation and reactivity of complexes [ M3(CO) (p-Ph2PC4PPh2) M 3(CD)n)] (M=M =Ru or Os M=Ru,M =Os) in which trinuclear... 

This section is dedicated to a description of the chemistries of trinithenium and triosmium clusters that do not contain hydrocarbon ligands. This section should be viewed as an addition to the chemistry described in sections 32.5 and 33 of COMC (1982) and section 12 of COMC (1995) as most of the main themes have been developed in the previous two decades. Overall, the interest in the cluster chemistry of ruthenium and osmium during the period 1994-2004 has tended to focus mainly on higher nuclearity and mixed metal clusters in order to enhance the developments in catalysis and bridge the gap between molecular clusters and nanoparricles. However, triruthenium and triosmium clusters continue to play a pivotal role in the chemistry of ruthenium and osmium. Both classes of clusters can be, and are, used extensively as precursors for the synthesis of higher nuclearity clusters as well as the formation of mono- and bimetallic complexes. No up-to-date review of the chemistry of either Ru3(CO)i2 or Os3(CO)i2 and their compounds is available, but several annual reviews of the chemistry of mthenium and osmium, which include the chemistry of the trinuclear clusters, are available. ... 

Ruthenium clusters containing oxygenated diphosphine ligands Triruthenium and triosmium clusters obtained through orthometallation reactions Triruthenium complexes isolated during catalytic experiments Addition of phosphorus ligands to cationic triosmium complexes Miscellaneous oomplexes... 

Among the functionalized alkynes which have been reacted with triruthenium and triosmium clusters, there is 11- -ethynylestradiol. The aim of the studies on these complexes was to obtain high-affinity markers and receptors for this estrogen, which plays an important role in breast cancer. Gomplexes with the alkyne bound in... 

The ability of sol-gel entrapped compounds to catalyze reactions that do not take place by the non-entrapped materials is even more pronounced when an alumina sol-gel matrix is used. For example, while dihydrogen treated of triosmium- and triruthenium dodecacarbonyls [i.e., H40s4(C0)i2 andH4Ru4(CO)i2] are poor hydrogenation catalysts (see e.g., Ma, 1990) their immobilized versions in alumina sol-gel are highly active catalysts for the reduction ofalkenes and nitro groups at 60°C under 20-25 atm, H2 (Schemes 24-27 and 24-28). The alumina sol-gel entrapped ruthenium carbonyl complex even catalyzes... 

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