37216-50-5Relevant academic research and scientific papers
Synthesis of High Nuclearity Cluster Alkynes Under Mild Reaction Conditions; the X-Ray Crystal Structures of , , and
Gomez-Sal, M. Pilar,Johnson, Brian F. G.,kamarudin, Rose A.,Lewis, Jack,Raithby, Paul R.
, p. 1622 - 1625 (1985)
Reaction of the labilised cluster with the terminal alkynes HCCR (R = Me, Et, or Ph) affords the isomeric alkyne substituted clusters and R = Me (2), Et
Synthesis and Characterisation of Nona-osmium Carbonyl Clusters; Crystal and Molecular Structure of
Amoroso, Angelo J.,Johnson, Brian F. G.,Lewis, Jack,Raithby, Paul R.,Wong, Wing Tak
, p. 814 - 815 (2007/10/02)
The anion -, 2 has been isolated in moderate yield by the vacuum pyrolysis of , and has been shown by a single crystal X-ray structure analysis to contain the previously unobserved tricapped octahedral Os9 metal core.
Synthesis, Reactivity, and X-Ray Crystal Structures of CH2Cl2 and . Model Compounds for C-H Activation
Couture, Christiane,Farrar, David H.
, p. 2253 - 2260 (2007/10/02)
The reaction of with (C8H12=cyclo-octa-1,5-diene) results in the formation of (1).The geometry of (1) may be derived from that of by bridging one edge of the central Os tetrahedron with one Pt atom of the dimer unit Pt2(μ-C8H10)(C8H12).One C8H12 group has been dehydrogenated to C8H10 and the two resulting hydride ligands are terminally bound to different metals of the Os6 core.The C8H10 ligand is bound in an η3-allyl fashion to one Pt atom and by an η2-olefinic bond and ?-alkyl bond to the second Pt atom.Upon heating in toluene, complex (1) rearranges to the known complex (3).Complex (3) is without hydride ligands and possesses a geometry of two edge-fused Os tetrahedra, one of which is Pt-bicapped.The complex (2) was isolated from the reaction of with C8H12.Complex (2) has the bicapped tetrahedral geometry of with the μ-C8H11 group bridging two Os atoms of the central tetrahedron.The hydride ligand caps a triangulated Os face.This complex reacts with CO to afford the parent cluster .
NEW TRIOSMIUM METAL CLUSTERS DERIVED FROM THE REACTIONS BETWEEN AND AMIDES
Odiaka, Timothy I.
, p. 95 - 100 (2007/10/02)
Triosmium clusters of the type (1; R=H, Me, Ph, Et or Pr) are formed in high yields form the reaction of (2) with amides.The nature of the products formed from thermolysis of 1 depend on the group, R.
SYNTHESIS AND X-RAY ANALYSIS OF AND
Johnson, Brian F.G.,Lewis, Jack,Nelson, William J.H.,Vargas, Maria D.,Braga, Dario,at al.
, p. 2151 - 2162 (2007/10/02)
The cluster anion -(1) has been obtained from the reaction of in BuiOH and X-ray analysis of its + salt shows that the anion has an unusual fused tetrahedral metal-core geometry related to that of .Reaction of (1) with iodine gives (2) in which an overall change in cluster geometry has occurred; the reaction is reversible and heating (2) with iodide regenerates (1).Reaction of (1) with concentrated H2SO4 gives which reacts with P(OMe)3 to give > and with halide ions to give evantually 2-.Crystals of are triclinic, space group P, with a = 16.775(3), b = 13.509(2), c = 11.267(2) Angstroem, α = 89.88(1), β = 103.97(1), γ = 96.99(1)deg, and Z = 2.Refinement of atomic parameters using 5 615 absorption-corrected data converged at R = 0.0359.Crystals of *H2O are monoclinic, space group P21/c, with a = 14.386(2), b = 11.037(1), c = 24.629(3) Angstroem, β = 94.30(2)deg, and Z = 4.Refinement of atomic parameters using 4 644 absorptioncorrected reflections converged at R = 0.0569.
Some Reactions of with Arenes; the Molecular Structure of
Goudsmit, Robert J.,Johnson, Brian F. G.,Lewis, Jack,Raithby, Paul R.,Rosales, Maria J.
, p. 2257 - 2262 (2007/10/02)
The cluster was obtained in good yield by the reaction of with benzene under reflux.This benzyne cluster crystallises in space group P21/c with a=17.391(5), b=13.190(2), c=16.512(3) Angstroem, β=92.39(2) deg, and Z=8.The structure was solved by a combination of direct methods and Fourier difference techniques, and refined by blocked-cascade least squares to R=0.079 for 3438 observed diffractometer data.In each of the two independent molecules the three Os atoms define an irregular triangle the longest edge of which is bridged by the benzyne ligand which is co-ordinated to the third Os atom via a ? bond.This long edge is also bridged by a hydride and the other hydride bridges one of the other Os-Os edges .The third Os-Os edge is unbridged.When the reaction is carried out in toluene or chlorobenzene rather than benzene the complexes and are obtained.In each case two isomers have been identified by 1H n.m.r. spectroscopy.With trans-stilbene the only complex characterised has been formulated as in which one ring is co-ordinated to the cluster in a similar manner to that in .
