Browsing by Author "Darensbourg, Marcetta Y."
Now showing items 21-40 of 68
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Shin, Woon-Sup (Texas A&M University. Libraries, 1992)The oxygen-sensitive, nickel and iron-containing enzyme carbon monoxide dehydrogenase (CODH) from clostridium thermoaceticum was purified without any significant loss of the activity present in the crude extract. The careful ...
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Singleton, Michael Lee (2012-02-14)The unique active site of [FeFe]-hydrogenase has inspired over 300 small molecule models derived from the classical organometallic complex, (μ-SRS-)[Fe(CO)3]2. However, no model complex has yet reproduced the hydrogen ...
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Young, Mark D. (2010-01-16)This dissertation concerns the use of bicyclic guanidinate ligands to prepare new dimetal paddlewheel compounds. Specifically, Ru_2^6+, Re_2^6+, Re_2^7+, and Os_2^7+ compounds will be examined to observe any changes brought ...
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Tye, Jesse Wayne (2009-05-15)This dissertation describes computational and experimental studies of synthetic complexes that model the active site of the iron-iron hydrogenase [FeFe]H2ase enzyme. Simple dinuclear iron dithiolate complexes act as ...
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Thorstad, Melissa (2013-05-23)In 1996, scientists discovered a connection between the gene for the human protein frataxin (FXN) and the neurodegenerative disease Friedreich’s ataxia (FRDA). Decreased FXN levels result in a variety of aberrant phenotypes ...
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Hemi-Labile, Redox Active Metallodithiolates as Ligands for Bioinspired Proton Reduction Catalysts Ghosh, Pokhraj (2017-12-08)The versatile organometallic type active sites in biology that harbor intact metallo-sulfur units are key The versatile organometallic type active sites in biology that harbor intact metallo-sulfur units are key inspirations ...
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Ovalles, Cesar Francisco (Texas A&M University. Libraries, 1986)In the past five years, the search for alternative sources of petrochemical feedstocks has turned attention toward non-conventional sources of chemical carbon other than carbon monoxide. A renewed interest in the chemistry ...
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Green, Kayla Nalynn (2009-05-15)The A-cluster active site in acetyl coA synthase exploits a Ni(CGC)2- metallopeptide as a bidentate ligand to chelate the catalytically active square-planar nickel center used to produce acetyl coA. As Nature utilizes ...
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Hilfiger, Matthew Gary (2011-08-08)The work presented herein describes efforts to synthesize and characterize new types of cyanide-bridged molecular materials encompassing both discrete clusters and extended solids. This investigation focused on the ...
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Foley, William (2011-02-22)The treble clef binding motif of the zinc finger metalloprotein utilizes N2S2 binding sites. Whereas other N2S2 metalloproteins function in catalytic roles, zinc fingers serve mostly a structural element, although there ...
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Almaraz, Elky (2010-07-14)Small molecule Zn(II) complexes containing N- and S- donor environments may serve as appropriate models for mimicking Zn protein sites, and thus, their reactions with heavy metal ions such as Pt(II) and W(0) may provide ...
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Nguyen, Trang Quynh (2019-10-29)feorganism to study eukaryotic iron metabolism. Much Fe enters the cytosol and shuttles to the mitochondria for heme and iron-sulfur clusters biosynthesis. Little is known about cytosolic iron. Circumstantial evidence ...
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Heinrich, Dwight Damon (Texas A&M University. Libraries, 1987)The preparation of the asymmetric gold dimer, 2, [Au(CH₂)₂P(C₆H₅)(CH₃)]₂, was carried out using Li[C₆H₅)(CH₃)P(CH₂)₂] and (C₆H₅)₃PAuCl. The trans isomer was isolated as the predominant product. Isomerization of trans-2 to ...
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Venditto, Vincent J. (2011-02-22)Diverse dendrimer peripheries are often produced through convergent synthesis with multiple protection-deprotection steps. Achieving such diversity while maintaining monodispersity, has previously proven problematic. ...
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Ha, Chau Thi Minh (Texas A&M University. Libraries, 1993)This dissertation discusses the use of Lewis acids to activate and catalyze cyclization and addition reactions of aminyl radicals generated from N-hydroxypyridine-2-thione carbamates to unsaturated systems under very mild ...
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Mejia Rodriguez, Ma. del Rosario (Texas A&M University, 2005-11-01)The synthesis of diiron thiolate complexes was carried out using two ligands that were expected to furnish improved catalytic activity, solubility in water, and stability to the metal complexes. The water-soluble phosphine ...
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Chojnacki, Stephen Shane (Texas A&M University. Libraries, 1993)Nickel complexes in sulfur-rich environments have been prepared to determine those factors which stabilize organonickel species and permit access to low valent nickel. Nickel tetrathiolate complexes were initially used as ...
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Vasquez, Yolanda (2009-05-15)The synthesis of solid state materials has traditionally been accomplished using rigorous heating treatments at high temperatures (1,000°C) to overcome the slow rate of diffusion between two reactants. Re-grinding and ...
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Jeffery, Stephen Paul (2009-06-02)NiN2S2 moieties have been used as a unique class of ligand in organometallic chemistry behaving as innocent mono- and bidentate ligands to metals bound via their thiolate sulfur donor atoms. We have established the donor ...
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Joseph, Elizabeth Ann (2020-08-04)In recent years, there has been a rising interest in the field of highly-porous materials. Porous materials come in a large variety of subtypes, allowing for very high levels of versatility and tunability. Porous materials ...