Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 22 for “"Alkaline earth metal"”.
-
Synthesis and Chemical Bonding of Lithium and Alkaline-Earth Metal-based Carbometallates
Organometallic molecules of nickel and palladium are typically employed as catalysts. Carbometallates are promising precursors for the synthesis of such organometallic compounds. Transition metal-to-carbon bonds are generally difficult to form in a typical organometallic synthesis. However in the …
-
The determination of superoxide oxygen and the attempted preparation of lithium and alkaline earth metal superoxides
Dissertation (Ph.D.)--University of Kansas, Chemistry, 1950.
-
Inclusion compounds : structure, reactivity and selectivity
… organic guests. The host compounds studied are alkaline-earth metal salts of O,O’-dibenzoyl-(2R, 3R)-tartraric acid (magnesium, calcium and strontium), 1,1’-bis-(4-hydroxyphenyl)cyclohexane (DHPC) and 2,2’-dihydroxy-1,1’-binaphthyl (BINAP). The alkaline-earth metal salts form coordination …
-
Metal complexes of 1,2-quinone monooximes and their applications in organic synthesis
… with alkali (lithium, sodium and potassium) and alkaline earth metal (magnesium and barium) hydroxides and acetates [M(OH)n or M(OAc)r] have been carried out.
-
A cold strontium Rydberg gas
… to study Rydberg states in a cold gas of an alkaline earth metal, in this particular case strontium. We have studied a wide range of Rydberg states, and have developed a sensitive ``step-scan" spectroscopic technique that detects the spontaneous ionization of the Rydberg gas. The step-scan …
-
Metal ion complexation, extraction and transport by crown and lariat ether compounds
… crown ethers have been employed for alkali and alkaline earth metal cation separations due to their superior binding ability for these metal ions. Lariat ethers are crown ethers with one or more donor-groupbearing arms. Attachment of one or more side arms with potential metal ion coordination …
-
An investigation of cation-exchange in aqueous pyridine
… in aqueous and aqueous pyridine solutions of the alkaline earth metal cations. The ion-exchange phenomena investigated included: swelling, preferential sorption of solvent and selectivity variations with loading, degree of neutralization of the resin, solvent composition and choice of solution …
-
First principles study of ternary skutterudites
… CoGe1.5S1.5, CoGe1.5Se1.5, and CoGe1.5Te1.5. Alkaline-earth metal and Lanthanum are used as void fillers in this study. Transport properties, including Seebeck coefficient and electrical conductivity, are obtained from Boltzmann transport theory. The calculation results show high Seebeck …
-
Polar intermetallic compounds of the silicon and arsenic family elements and their ternary hydrides and fluorides
… and fluoride in the solid state chemistry of alkaline-earth and divalent rare-earth metal pnictide (Pn) and tetrelide (Tt) phases A5(Pn,Tt,)3Zx, where A = Ca, Sr, Ba, Sm, Eu, Yb; Pn = As, Sb, Bi; Tt = Si, Ge, Sn, Pb and Z = H, F. Several trivalent rare-earth-metal pnictides, RE5Pn3 (RE = Y, …
-
Technical and economic feasibility of a high-temperature self-assembling battery
… densities. Another key feature is that a molten metalloid acts as the positive electrode, while an alkali or alkaline earth metal acts as the negative electrode, providing two electronically conductive molten electrodes. The cell is estimated to have a lifespan of 10-15 years with >3,000 …
-
Coordination polymers of the alkaline earth metals for applications in synthesis and gas storage
… this thesis outlines our efforts to synthesize alkaline earth metal</p> <p>coordination complexes that could potentially serve as gas storage and synthetic precursor</p> <p>materials. The properties of these complexes are heavily influenced by factors such as the</p> <p>propensity to aggregate …
-
Transport phenomena in hydrogel membranes
… factors surrounding the permeation of alkali and alkaline earth metal salts through hydrogel membranes are investigated. Although of relevance to aqueous separations in general, it was with their potential application in sensors that this work was particularly concerned. In order to study the …
-
Stroncio nustatymas vaistažolėse liepsnos atominės absorbcinės spektrometrijos metodu /
… Atomic Absorption Spectrometry Strontium is an alkaline earth metal. A mineral found in a lead mine, Scotland by A.Crawford in 1790. Strontium is a grey, silvery metal that is softer than calcium. Sr is well known from the minerals SrSO4 and SrCO3. Natural Sr is a mixture of four stable …
-
Synthesis and Structural Studies of Calcium and Magnesium Phosphinate and Phosphonate Compounds
… cements. The challenge to the chemistry of the alkaline earth phosphonate target compounds includes poor solubility of compounds, and poorly understood details on the control of the metal's coordination environment. Hence, less is known on phosphonate based alkaline earth metal organic …
-
Fluorescent sensors for metal ions
… photophysical behaviour towards a selection of alkaline and alkaline-earth metal ions. The new fluoroionophores (4-(i '-aza-4'-7'- 10 ,-i 3 '-tetraoxapentadecyl) benzonitrile, 4-( 1 '-aza-4'-7'- 10-i 3'-! 6'-pentaoxapentadecyl)benzonitrile, methyl-4- (1 …
-
Synthesis And Characterization Of Metal Complexes Containing Tetrazolate, Poly(tetrazolyl)borate, And Poly(azolyl)aluminate Ligands As High Energy Density Materials
<p>A series of heavy alkaline earth metal tetrazolate complexes has been synthesized that contain metal ions saturated by aqua ligands. Tetrazolates with small ring-core carbon substituents favor formation of two dimensional polymers with u3-coordination of the tetrazolate to the metal centers. …
-
Synthesis And Characterization Of Metal Complexes Containing Tetrazolate, Poly(tetrazolyl)borate, And Aryl Pentazole Ligands As High Energy Density Materials
<p>Heavier alkaline earth metal tetrazolates have been prepared as cryatals contain aqua ligands and as anhydrous powders, and were characterized by spectral and analytical methods. Potassium bis(tetrazolyl)borate complexes K(BH<sub>2</sub>(RCN<sub>4</sub>)<sub>2</sub>)(H<sub>2</sub>O)<sub>n</sub> …
Page 1 of 2