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Showing 1 to 20 of 45 for “"Low Valent"”.
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Chemistry of low-valent osmium
… The reactivity of certain ligands coordinated to low-valent osmium has also been investigated. Various hydride complexes of osmium(II) were prepared as potential precursors of osmium(O). OsH₄(PPh₃)₃ reacts with p-tolylisocyanide (TIC) and 4-ethyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octane (ETPO) …
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Reactivity of a Low Valent Gallium Compound
… of adducts between substrates and NacNacGa=O followed by a C-H bond abstraction from the substrate. Similarly, a transient gallium imide NacNacGa=NSiMe3, generated from the reaction of NacNacGa with trimethylsilyl azide, is shown to cleave C-H bonds of pyridine, cyclohexanone, ethyl acetate, …
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I. Reactions of Tetracyanoethylene Oxide With Low Valent Metal Complexes. Ii. Chemistry of Low Valent Titanium and Zirconium Organometallic Compounds
Made available in DSpace on 2014-12-13T20:09:56Z (GMT). No. of bitstreams: 1 7708971.pdf: 8515800 bytes, checksum: ab08a1a4ca3a393f2017defca36c9e81 (MD5) Previous issue date: 1976
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Synthesis and analysis of low-valent NHC supported nickel complexes
… of (IDipp)Ni(OTf)(Et2O), a synthetic equivalent of (IDipp)Ni(I)+. Next, we show that the reaction of [(IDipp)Ni)]2(μ-ONp)(μ-OTf) with pentamethyldisiloxane results in isolation of {[(IDipp)Ni]2(μ-H)}[OTf]. Deprotonation of this hydride complex results in formation of [(IDipp)Ni]2, further …
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New Chemistry of Mercaptoazulenes and Low-Valent Complexes of Isocyanoarenes
… and the coordination of isocyanoarenes with low valent transition metal complexes will be discussed. Chapter 1 of the thesis describes the synthesis of the first example of a dimercaptoazulene. Two different synthetic routes were developed for the preparation of this dimercaptan and …
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Synthesis and Reactivity of Low Valent Main Group Element Complexes
… complex IV-1 affords the formally zero valent germanium complex IV-4 stabilized by the bis(imino)pyridine platform. Compound IV-4 was fully characterized by spectroscopic methods and X-ray diffraction analysis. The molecule has a singlet ground state and DFT studies revealed partial …
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The synthesis and reactivity of low valent technetium nitrosyl complexes
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1994.
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Synthesis, characterization, and reactivity of low valent technetium phosphine complexes
Chapter 1. The chemistry of the metal-metal multiply bonded Tc2(II,II) core has been investigated with bis(diphenylphosphino)methane (dppm). The parent complex, Tc2Cl4(dppm)2, has been prepared from the reaction of Tc2C14(PEt3)4 with dppm. The reactivity of Tc2Cl4(dppm)2 with tert-butyl isocyanide …
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Structural Studies of Low Valent Titanium Organometallic and Unsaturated Organoaluminum Compounds
Made available in DSpace on 2014-12-10T23:02:08Z (GMT). No. of bitstreams: 1 7511585.pdf: 4348864 bytes, checksum: c5de5c52fbb130ea9c7f74b9c8372f5b (MD5) Previous issue date: 1974
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Synthesis and Reactivity of Anthracene-Based Molecular Precursors for Low-Valent Boron Species
The study of compounds containing elusive main group multiple bonds has long been a topic of immense interest. Today, it remains an attractive path towards unlocking new reactivity and developing a complete empirical understanding of chemical bonding. However, due in large part to a lack of …
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Low-valent and low-coordinate titanium and molybdenum complexes supported with bulky amido ligands
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1997.
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Synthesis, characterization, and reactivity of high and low valent group 10 metal complexes supported by pyridine dithiolate ligands
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-08-01
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High and low valent nickel complexes supported by tridentate and tetradentate ligands relevant for C–C bond formation reactions
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-12-01
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"Low-valent early transition metal complexes stabilized by the chelating tripod phosphine ligand ( t-butyl)tris((dimethylphosphino)methyl);silane (""trimpsi"")"
"The organometallic chemistry of the early first-row metals has been extended through the use of a new tridentate phosphine ligand, Bu$\sp{\rm t}$Si(CH$\sb2$PMe$\sb2$)$\sb3$, or ""trimpsi"". The starting materials (trimpsi)TiCl$\sb3$(thf), (trimpsi)VCl$\sb3$(thf), (trimpsi)CrCl$\sb3$, and …
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Catalytic hydrofunctionalization and small molecule reactivity at a low-valent cobalt center supported by a bis(carbene) CCC pincer ligand
… ability of the CCC ligand framework to support low-spin electron configurations at the first-row transition metal center and motivated additional studies into the reactivity of the Co(I) dinitrogen compound. Initial studies explored the catalytic competency of the (DIPPCCC)CoN2 species, …
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Part I. Synthesis, characterization, and reactivity of low valent organotitanium complexes. Part II. Chemical vapor deposition of rhodium metal thin films
Made available in DSpace on 2011-05-07T14:06:07Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9712495.pdf: 7759739 bytes, checksum: fcc679673f6ce4c38c13b54909d5edb9 (MD5) Previous issue date: 1996
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Mechanisms of multielectron redox catalysis with low-valent cobalt: defining the roles of coordination number, stereoelectronics and field effects in selectivity for two-electron chemistry
Embargo set by: Seth Robbins for item 91490 Lift date: 2018-03-08T17:22:13Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system
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Synthesis and Characterization of Products Produced from Aluminum Monohalide Precursors
… n>m). A brief overview of the renaissance of low-valent aluminum chemistry and select low-valent Al products is presented as background. The neutral mononuclear aluminum tris-bpy complexes [Al(Mebpy)3] and [Al(tBubpy)3] have been synthesized, isolated, and structurally characterized via X-ray …
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The Synthesis, Reactivity and Electrochemical Study of Metallocene Substituted α-Diimine Ligands
… of an N, N’-differocenyl diiminopyridine and its low-valent chalcogen (S2+, Se2+, Te2+) and pnictogen (P+) complexes are discussed. These complexes represent the first such examples of utilizing low-valent main group systems containing redox-active ligands with pendant ferrocenyl substituents. …
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