64364-79-0Relevant articles and documents
Synthesis and crystal structure of Ru3(μ3-NPh)(μ-DPPM)(CO)8
Pizzotti, Maddalena,Porta, Francesca,Cenini, Sergio,Demartin, Francesco
, p. 105 - 112 (1988)
Reaction of Ru3(μ3-NPh)(CO)10 with DPPM (diphenylphosphinomethane) has given the substituted imido complex Ru3(μ3-NPh)(μ-DPPM)(CO)8, the structure of which has been determined by X-ray diffraction.The compound crystallizes in the monoclinic space group P21/n with a 14.027(7), b 14.887(7), c 18.499(9) Angstroem, β 93.52(4) deg and Z=4; R=0.022 and Rw=0.028 for 5006 independent reflections with I>3?(I).The interaction of the imido complex with CO has been investigated under various conditions.It proved to be very robust, giving small amounts of PhNCO (or PhNHCO2Me in the presence of methanol) and Ru3(μ-DPPM)(CO)10 only at 170 deg C and 60 atm of carbon monoxide.
Trapping of a phenyl group by a ruthenium cluster during dephenylation of coordinated CH2(PPh2)2 (dppm)
Bruce, Michael I.,Humphrey, Paul A.,Skelton, Brian W.,White, Allan H.
, p. 141 - 146 (2007/10/03)
Pyrolysis of {Ru3( μ-dpp)(CO)9}n(dppa) (n = 1 or 2) afforded Ru3( μ3-PPhCH2PPh2)( μ3-η1:η2:P-C2PPh2)( μ-PPh2)(Ph)(CO)6, containing an Ru3 chain bridged by a dephenylated dppm ligand and by C2PPh2 and PPh2 ligands derived from the dppa ligand. The phenyl group from the dppm ligand has been trapped by one of the Ru atoms to give a rare example of a cluster-bound σ-Ph group. The molecular structure of Ru3(μ-H)(μ3-η1,η2-CCHP(O)Ph2}( μ-PPh2)( μdppm)(CO)6, obtained on one occasion from the mono-cluster complex, is also described.
New ruthenium-tin clusters with bulky ligands. Crystal and molecular structures of [Ru2(CO)6(μ-SnR2)(μ-Ph 2PCH2PPh2)], [Ru3(CO)9(μ-SnR′2)3], [Ru3(CO)9(μ-SnR2)μ-SnR′ 2]2 and ...
Cardin, Christine J.,Cardin, David J.,Convery, Maire A.,Dauter, Zbigniew,Fenske, Dieter,Devereux, Michael M.,Power, Michael B.
, p. 1133 - 1144 (2007/10/03)
Title full: New ruthenium-tin clusters with bulky ligands. Crystal and molecular structures of [Ru2(CO)6(μ-SnR2)(μ-Ph 2PCH2PPh2)], [Ru3(CO)9(μ-SnR′2)3], [Ru3(CO)9(μ-SnR2)μ-SnR′ 2]2 and [Ru3(CO)9(μ-SnR2) 2(μ-SnR′2)] [R = CH(SiMe3)2, R′= C6H2Pri3-2,4,6]. The first heterometallic clusters containing the SnR′2 (R′ = 2,4,6-triisopropylphenyl) moiety have been prepared. Triruthenium dodecacarbonyl reacted at low temperatures with SnR′2 or, at higher temperatures, with its trimer (SnR′2)3 to give both [Ru3(CO)10(μ-SnR′2)2] 1 and [Ru3(CO)9(μ-SnR′2)3] 2. Reaction of the pentametallic species [Ru3(CO)10(μ-SnL2)2] [L = R = CH(SiMe3]2 3 or R′] with SnR′2 or SnR2 respectively afforded the hexametallic clusters [Ru3(CO)9(μ-SnR2)(μ-SnR′ 2)2] 4 and [Ru3(CO)9(μ-SnR2) 2(μ-SnR′2)] 5. In the reaction of [Ru3(CO)12] with SnR2 the hexametallic cluster [Ru3(CO)9(μ-SnR2)3] 6 has now been isolated in addition to the previously reported Ru3Sn2 cluster. The trimer (SnR′2)3 also reacted with [Ru3(CO)10(dppm)] (dppm = Ph2PCH2PPh2) to give [Ru3(CO)8(μ-SnR′2)2(dppm)] 7, whereas with SnR2 the product was [Ru2(CO)6(μ-SnR2)(μ-dppm)] 8. Compound 7 can also be obtained by the reaction of 2 with dppm, using sodium-benzophenone to activate the cluster. Reaction of the dodecacarbonyl with Sn[CH(PPh2)2]2 or its lead analogue surprisingly did not yield a mixed cluster, but afforded a rapid and quantitative route to [Ru3(CO)10(dppm)]. Compound 2 behaves similarly, yielding 7 again in high yield. The crystal and molecular structures of 2,4, 5 and 8 have been determined. In compounds 2,4 and 5, the ruthenium triangle and the three tin atoms form a planar array. A detailed comparison of ligand steric effects is made. In 8 the metal atoms and the two P atoms are coplanar, with a long Ru-Ru vector bridged by the R2Sn group and the diphosphine [2.954(2) A]. The structure of 4 is unusual, the characteristic aryltin twist on only two of the three tin atoms generating chirality, resulting in a spiral packing in space group P65. This structure was determined both diffractometrically and using two different image-plate systems, and the results are remarkably consistent in all three cases.
