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Showing 1 to 18 of 18 for “"Cluster compounds"”.
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Oxyligands in triosmium carbonyl cluster compounds
… triply bridging phosphonate and arsonate clusters of the general formula ($\mu$-H)$\sb2$Os$\sb3$(CO)$\sb9$($\mu\sb3$, $\eta\sp3$-O$\sb3$ER) (E = P, R = Ph (1), Me; E = As, R = Ph) were prepared. The reaction scheme involved (1) generation of a solution containing a labile cluster species …
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Photophysics of hexanuclear [Re₆Q₈]²⁺ cluster compounds
… for these applications are typically emissive compounds whose emission intensity is quenched by oxygen. This measurement of oxygen concentration at a surface can be used to calculate the pressure, and thus the flow. Although most PSP probes are used at or around ambient temperatures, …
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Some Organometallic Chemistry of Tungsten-Triosmium Cluster Compounds
… reactivity of new tungsten-triosmium (WOs(,3)) cluster compounds. The presence of a tungsten atom in the cluster framework imparts a considerably different reactivity pattern than that observed in triosmium chemistry.
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The Catalytic Behavior of Supported Ruthenium Cluster Compounds
The suggestion that metal cluster compounds may serve as models for chemisorption on metal surfaces has led to their use as precursors for catalytically active species with well-defined structures. Previous research {1-3} using supported metal cluster carbonyl compounds suggests that under …
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Pressure tuning spectroscopy of binuclear metal cluster compounds
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-02T15:43:50Z No. of bitstreams: 1 1987_Carroll.pdf: 1436938 bytes, checksum: 4ec3d27fdffa96f30d6b8f2ce6e519f3 (MD5)
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Pressure Tuning Spectroscopy of Metal Cluster Compounds and Organometallics
… of hydrostatic pressure upon various metal cluster compounds and organometallics was studied through the use of electronic absorption and infrared spectroscopies. The systems studied were chosen for their use as potential models for chemisorbed metallic surfaces, and to gain a better …
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Synthesis and reactivity studies of rhenium carbido carbonyl cluster compounds
Made available in DSpace on 2011-05-07T13:58:44Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9512401.pdf: 4691506 bytes, checksum: 02c1a3070ddaa3bd747f6be4bbb8dc6f (MD5) Previous issue date: 1994
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Multinuclear NMR studies on solution structures and dynamics of triosmium hydrido carbonyl phosphine cluster compounds
… provides two isomers of a hydridovinyl cluster. The solid-state structure of each isomer has been determined by single-crystal X-ray crystallography. The solution structures and dynamics have been studied by extensive $\sp{13}$C NMR studies, including $\sp{13}$C$\{\sp1$H$\}$ COSY and …
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Structural studies of polynuclear metal carbonyl derivatives
… structure analysis of fifteen metal carbonyl cluster compounds of nuclearity three to seven have been carried out to investigate the effect organo-fragments have on metal core geometry.
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Studies of the role of ligands in determining the structures of polynuclear metal compounds
Full X-ray structure analyses of sixteen metal cluster compounds of nuclearity 3 to 11 have been carried out to investigate to what extent the attached surface ligands govern the structure in the solid state and how this relates to the chemistry of the cluster in solution.
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Computational chemistry of organometallic and inorganic species
… containing an Fe2 core and carbonphosphorus cluster compounds. In chapters II and III, we describe the impact of reduction, an important phenomenon in the H2 production catalytic cycle, on a hydrogenase-like model. In collaboration with Talarmin and co-workers who have conducted careful …
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Group 3 and Group 13 Metal Hydride Compounds
… ligand stabilized yttrium hexahydride cluster compound. This cluster compound was studied by single crystal X-ray structure analysis and NMR spectroscopy. Highly dynamic behavior of the hydrides and the guanidinato ligands was observed by variable temperature 1H NMR spectroscopy. A …
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The utilization of boron-rich clusters as aids to detect reactive oxygen and nitrogen species through non-fluorescent modalities
… and transient oxygen/nitrogen containing compounds that play important roles in redox signaling processes to maintain cellular homeostasis. Typically, these finnicky species are detected through activity-based sensors (ABS) which produce a fluorescent response after being selectively …
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Diphosphine Ligand Activation Studies with Organotransition-Metal Compounds
… to the cobalt atom. Thermolysis of the cluster Ru3(CO)12 with the bis(phosphine)hydrazine ligand (MeO)2PN(Me)N(Me)P(OMe)2 (dmpdmh) in toluene at 75°C furnishes the known clusters Ru4(CO)12[μ -N(Me)N(Me)] (9) and Ru3(CO)11[P(OMe)3] (10), in addition to the new cluster Ru3(CO)10(dmpdmh) …
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Alkane Elimination Reactions between Transition Metal Hydrides and Rare-Earth Alkyls
… the stoichiometry (0.5-2.0 equiv [Cp*RuH2]2) the cluster compounds were obtained selectively. Solid state structures of both compounds could be established by XRD analyses. The isostructural compounds feature four Ln-Ru intramolecular distances of which one is significantly shorter than the three …
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Bismutsubchloride mit anionischen Clustern und Bismutpolykationen - Synthese, Charakterisierung und Kristallstrukturen
… die gewünschten voneinander isolierten Cluster aus Metallatomen vorlagen. Die Verbindungen Bi12PtCl12, Bi12-xRhCl13-x, Bi12-xIrCl13-x (x < 1) und Bi6,67PtCl12 wurden als Pulver und als Kristalle durch Festkörperreaktionen bei 1273 K in Quarzglasampullen hergestellt. Die schwarz …