Global ETD Search
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Showing 1 to 7 of 7 for “"Cyclobutadiene"”.
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Exploring the Chemistry of Cyclopentadienyl-Cobalt-Cyclobutadiene (CpCoCb) Complexes and Synthesis of Side-Chain CpCoCb Polymers
… polymers containing cyclopentadienyl-cobalt-cyclobutadiene (CpCoCb) have been targeted since early 1990’s due to their isoelectronic nature (cf. ferrocene) with three major groups working in this area. The early CpCoCb containing polymers were prepared by alkyne dimerization of a bis-alkyne …
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The functionalization of fullerenes and nanocarbon materials for photovoltaics and other applications
… of fullerenes. In Chapter 2, the syntheses of cyclobutadiene-functionalized fullerenes are described, and the influence of intramolecular a-interaction on the electronic energy of a molecule is explored. The fullerene derivatives are used as electron acceptors in bulk heterojunction organic …
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Simulating and controlling non-adiabatic effects in ultrafast photochemistry
… A detailed analysis of spin orbit coupling in cyclobutadiene and benzene is presented. Spin orbit coupling values are presented along the important normal modes, which promote the strength of the coupling. The effect of conical intersections on the strength of spin orbit coupling are presented …
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Structures and Reactivities of Ionized and Metal Cation-Containing Acetylene Clusters
… the acetylene dimer ion, (C2H2)2+, to form the cyclobutadiene and vinylacetylene ions.Investigation of the reactions of acetylene radical ions (C2H2∙+) with water reveals competing kinetics for two primary, C2H4O∙+ and C2H3O+, and a secondary, H+(H2O)n, product with an overall reaction rate …
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Synthesis and Reactivity of Phosphorus-Containing Heterocycles and Tetrahedranes
… reactive and cage-opens to the corresponding cyclobutadiene when treated with catalytic triphenylborane. The proposed reactive intermediate was trapped by styrene and ethylene to form [4+2]-cycloadducts. (ᵗBuC)₃P also functions as a spring-loaded phosphinidene synthon for nickelcatalyzed group …
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Functionalized nido-C4B2, closo-C2B5 and -C2B10 Carboranes, and Reactivity Studies on Electron-Poor 2,3-Dihydro-1,3-diborolyl Complexes of Ruthenium
… dicobaltatetrahedrane compounds 21c,d and CpCo(cyclobutadiene) complex 23. In Chapter 3.3, a series of C-boryl-o-carborane derivatives are reported by reacting dilithio-o-carborane and the corresponding aminochloroboranes, respectively. In Chapter 3.5, the unprecedented transformation of …
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Organometallic and coordination chemistry of (Tetramethylcyclobutadiene)cobalt sandwich and halfsandwich complexes
… one is devoted to the development of (tetramethylcyclobutadiene)cobalt (Cb*Co) tris(ligand) complexes [Cb*Co(L)3]+. An improved synthesis of the starting materials [Cb*Co(CO)3]BF4, Cb*CoI(CO)2 and [Cb*Co(C6H6)]PF6 was developed. Photolysis of [Cb*Co(C6H6)]PF6 in acetonitrile produced …