94658-87-4Relevant academic research and scientific papers
New alkyne bridged mixed-metal clusters and studies of their activity for catalytic hydrosilylation of alkynes
Adams, Richard D.,Bunz, Uwe,Captain, Burjor,Fu, Wei,Steffen, Winfred
, p. 75 - 82 (2007/10/03)
The homologous series of compounds MPt2(CO)5(PPh3)2(PhC2Ph), M=Fe (1), M=Ru (3) and M=Os (4) were obtained in the yields 55%, 24% and 30% from the reactions of Pt(PPh3)2(PhC
Alkyne Coupling Induced by a Trinuclear Ruthenium Cluster: Synthesis and Structure of Di-μ-carbonyl-hexacarbonyl-μ3-(1,2,3,4-tetraphenyl-1,3-butadiene-1,4-diyl)-triruthenium(2 Ru-Ru),
Capparelli, Mario V.,Sanctis, Ysaura De,Arce, Alejandro J.
, p. 1819 - 1822 (2007/10/02)
The reaction of PhCCPh with affords two complexes, one red-violet containing only terminal carbonyl groups and the other the orange-yellow title compound, di-μ-carbonyl-1:2κ2C;1:3κ2C-hexacarbonyl-1κ2C,2κ2C,3κ2C-μ3-4):3(η4)-1,3-butadiene-1,4-diyl-1κ2C>-triruthenium(2 Ru-Ru).The structure of the latter isomer consists of an open Ru3 cluster coordinated to the C4Ph4 ligand, formed by the dimerization of PhCCPh, and to eight CO groups, six terminal and two bridging.The central Ru atom is ?-bonded to the butadiene moiety to form an RuC4 metallacyclopentadiene ring .Each of the other two metal atoms is η4-bonded to the C atoms of the RuC4 ring to form a pentagonal bipyramidal Ru3C4 core.
Electrochemical, spectroscopic, and theoretical study of trinuclear ruthenacyclopentadienyl clusters Ru3(μ-CO)2(CO)6(RC2R)2
Osella, Domenico,Arman, Giuseppina,Gobetto, Roberto,Laschi, Franco,Zanello, Piero,Ayrton, Simon,Goodfellow, Venetia,Housecraft, Catherine E.,Owen, Steven M.
, p. 2689 - 2695 (2008/10/08)
The redox chemistry of triruthenium metallacyclopentadienyl clusters Ru3(CO)8(RC2R)2 has been investigated by electrochemical, spectroscopic, and theoretical techniques and compared with that of homologous triiron derivatives. The sequence of the electrode processes has been postulated on the basis of the responses of different electrochemical techniques, electron spin resonance (ESR) spectroscopy, and chemical tests. The linear correlations between the formal electrode potentials of these derivatives and the wavenumbers of the visible bands of their electronic spectra have been discussed on the basis of Fenske-Hall quantum mechanical approach carried out on the model compounds M3(CO)8(HC2H)2 (M = Fe, Ru) in the idealized C2v geometry.
Binuclear metallapyrrolidone complexes formed from coupling of CO and alkynes with the μ3-nitrene ligand of Ru3(μ3-NPh)(CO)10
Han, Sung-Hwan,Geoffroy, Gregory L.,Rheingold, Arnold L.
, p. 2380 - 2386 (2008/10/08)
The μ3-nitrene cluster Ru3(CO)10(μ3-NPh) (1) reacts with PhC≡CPh and MeC≡CPh to give the binuclear metallapyrrolidone complexes Ru2(CO)6(μ2-η3-PhC=CRC(O)NPh) (2, R = Ph; 5, R = Me) which form by combination of the alkyne with CO and the nitrene ligand. Minor products from the reactions are metallacyclopentadiene complexes, Ru2(C4R2Ph2)(CO)6, Ru4(CO)11(μ4-NPh)(MeC≡CPh), and the unusual Ru5 cluster Ru2(μ2-η3-PhC=CPhC(O)NPh)(CO) 5·Ru3(μ3-NPh)(CO) 6(μ3-CO) (3). The structures of 2, 3, and 5 have been crystallographically established. 2: monoclinic, P21/c, a = 21.492 (5) A?, b = 7.840 (1) A?, c = 15.819 (4) A?, β = 100.6 (2)°, V = 2619.4 (9) A?3, Z = 4, R = 0.030, Rw = 0.035 from 4417 reflections with Fo ≥ 3σ(Fo). 3: monoclinic, P21/c, a = 15.315 (5) A?, b = 27.319 (10) A?, c = 20.593 (7) A?, β = 102.46 (3)°, V = 8412 (7) A?3, Z = 4, R = 0.059, Rw = 0.058 for the 5783 reflections with Fo ≥ 3σ(Fo). 5: monoclinic, P21/c, a = 7.732 (1) A?, b = 30.670 (7) A?, c = 19.432 (4) A?, β = 99.96°, V = 4538 (2) A?3, Z = 4, R = 0.035, Rw = 0.038 for 5061 reflections with Fo ≥ 4σ(Fo). Complexes 2 and 5 have a μ2-η3-PhC=C(R)-C(O)-NPh ligand bridging between the Ru atoms which are joined by a metal-metal bond. Each Ru is further ligated by three CO's. Compound 3 derives from combination of 1 with 2. It has the μ3-CO ligand of 1 bound to one Ru atom of 2 in an isocarbonyl fashion and one Ph ring of the μ2-η3-PhC=C(Ph)-C(O)-NPh ligand having replaced three CO's on a single Ru atom of 1. Complex 3 was also directly prepared from the combination of 1 with 2 in refluxing cyclohexane. The diruthenium complex 2 further reacts with PhC≡CPh to form pentaphenylpyridinone and Ru3(PhC≡CPh)2(CO)8 (10). Complex 2 also reacts with CO upon photolysis to form 1,3,4-triphenylmaleimide.
