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Reactions Of Group 14-Halide Bonds With Dimethylplatinum(Ii) Complexes, Christopher James Levy
Reactions Of Group 14-Halide Bonds With Dimethylplatinum(Ii) Complexes, Christopher James Levy
Digitized Theses
The oxidative addition of E-X bonds (E = Si, Ge, Sn; X = halide) to {dollar}\lbrack\rm PtMe\sb2(diimine)\rbrack{dollar} yields a number of new Pt(IV) complexes containing Pt-E linkages. The complexes {dollar}\lbrack\rm PtXMe\sb2(Me\sb3Si)(diimine)\rbrack{dollar} (X = Br, I) are the first well-characterized examples of Pt(IV)-silyl species. The X-ray structure of {dollar}\lbrack\rm PtIMe\sb2(Me\sb3Si)(bipy)\rbrack{dollar} shows the longest single Pt-I bond reported, and demonstrates the very strong trans influence of the {dollar}\rm Me\sb3Si{dollar} ligand. The X-ray structure of {dollar}\lbrack\rm PtIMe\sb2(Me\sb3Sn)(bipy{dollar}-{dollar}\sp{lcub}t{rcub}\rm bu\sb2)\rbrack{lcub}\cdot{rcub}0.5Me\sb3SnI{lcub}\cdot{rcub}CH\sb2Cl\sb2{dollar} reveals a five coordinate {dollar}\rm Me\sb3SnI{dollar} unit with a novel {dollar}\rm I\cdot\cdot\cdot Sn{dollar}-I interaction.;Many of the Pt-Sn systems studied involve the rapid reversible oxidative addition …
Homo- And Hetero-Nuclear Clusters Of Platinum And Rhenium, Leijun Hao
Homo- And Hetero-Nuclear Clusters Of Platinum And Rhenium, Leijun Hao
Digitized Theses
ABSTRACT HAS BEEN ARCHIVED 07/22/97;
Spectroscopic Properties Of Copper Binding To The Protein Metallothionein, Anna Rae Green
Spectroscopic Properties Of Copper Binding To The Protein Metallothionein, Anna Rae Green
Digitized Theses
Metallothionein (MT) is a low molecular weight protein found in the kidneys and livers of all mammals. Twenty of its 61 or 62 amino acid residues are cysteinyl residues, allowing the protein to act as an impressive chelating agent. Although it has been well established that mammalian MT binds seven M(II) (M = Cd(II), Zn(II), Hg(II)) ions tetrahedrally in two metal-thiolate clusters of the form M{dollar}\sb4{dollar}(S{dollar}\rm\sb{lcub}cys{rcub})\sb{lcub}11{rcub},{dollar} (the {dollar}\alpha{dollar} domain) and {dollar}\rm M\sb3(S\sb{lcub}cys{rcub})\sb9,{dollar} (the {dollar}\beta{dollar} domain), little is known about the structure of copper-containing metallothioneins. In this thesis, absorption, circular dichroism (CD) and emission spectroscopies and excited state lifetime data are …
Variable Energy Photoelectron Spectra Of Organometallic Compounds Of The Late Transition Metals, Xiaorong Li
Variable Energy Photoelectron Spectra Of Organometallic Compounds Of The Late Transition Metals, Xiaorong Li
Digitized Theses
This thesis describes photoelectron spectroscopy (PES) studies with variable photon energy for organometallic molecules of late transition metals, including cobalt, rhodium, iridium, nickel, palladium, platinum, copper, and silver. Synchrotron radiation (in the range of 30 to 170 eV photon energy) and traditional helium I (21.22 eV) and helium II (40.81 eV) light sources were used in this study, with the aid of theoretical ground state and cross section calculations by using X{dollar}\alpha{dollar}-SW and Gelius model methods. With these techniques the variation of band intensities as a function of photon energy were investigated. The very different intensity features between metal d …
Circular Dichroism And Luminescence Studies Of Copper Binding To Metallothionein, Paul Anthony Presta
Circular Dichroism And Luminescence Studies Of Copper Binding To Metallothionein, Paul Anthony Presta
Digitized Theses
The metallothioneins (MT) are a class of low molecular weight, cysteine rich proteins found in almost all living things. The high sulfhydryl content imparts to these proteins the unique ability to bind a wide range of metals. The metallothioneins have been implicated in the storage and transport of essential metals, such as zinc and copper, and in the detoxification of toxic metals, such as cadmium. However, the exact physiological functions of these proteins remain a matter of speculation. In particular, little is known about the interactions of copper with MT. In this thesis, the structural and mechanistic properties of copper …
Structural Studies On Silver(I) Metallothionein, Ziqi Gui
Structural Studies On Silver(I) Metallothionein, Ziqi Gui
Digitized Theses
Metallothioneins (MT) are a class of low molecular weight, cysteine rich proteins in almost all living things. These proteins have been found to bind a wide range of metals both in vivo and in vitro due to the unusually high cysteinyl sulfur content. The metallothioneins are believed to possess the ability to store and transport essential metals, such as Zn(II) and Cu(I), and also to detoxify toxic metals, such as Cd(II) and Hg(II). However, the precise physiological functions of these proteins still remain unclear to date. As silver(I)-metallothioneins have shown different stoichiometric ratios of Ag:MT from Zn(II)- and Cd(II)-metallothioneins in …