A5089767395- Various Chemistry Research Topics
- Synthesis and characterization of novel inorganic/organometallic compounds
- Inorganic and Organometallic Chemistry
- X-ray Diffraction in Crystallography
- History and advancements in chemistry
- Crystallization and Solubility Studies
- Molecular spectroscopy and chirality
- Organometallic Compounds Synthesis and Characterization
- Thermal and Kinetic Analysis
- Radioactive element chemistry and processing
- Crystal Structures and Properties
- Analytical Chemistry and Chromatography
- Bone Tissue Engineering Materials
- Organoboron and organosilicon chemistry
- Organometallic Complex Synthesis and Catalysis
- Chemical Synthesis and Characterization
- Coordination Chemistry and Organometallics
- Organophosphorus compounds synthesis
- Silicone and Siloxane Chemistry
- Asymmetric Synthesis and Catalysis
- Chemical Thermodynamics and Molecular Structure
- Chemical Synthesis and Reactions
- Ferrocene Chemistry and Applications
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Calcium Carbonate Crystallization and Inhibition
Franklin & Marshall College
2014-2023
University of California, San Diego
2009
Oklahoma State University
2009
Elizabethtown College
1995
Millersville University
1995
Ursinus College
1971
Cornell University
1965
Despite numerous analytical studies, the exact nature of mineral component bone is not yet totally defined, even though it recognized as a type carbonated hydroxylapatite. The present study addresses hydration state through Raman spectroscopic and thermogravimetric analysis 56 samples apatite containing from 1 to 17 wt% CO3, synthesized in H2O or D2O. Focus on relation between concentration molecular water (as distinguished hydroxyl ions) carbonate apatite. spectra confirm presence part...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudy of tautomerism in arylazopyrazolones and related heterocycles with nuclear magnetic resonance spectroscopyFred A. Snavely Claude H. YoderCite this: J. Org. Chem. 1968, 33, 2, 513–516Publication Date (Print):February 1, 1968Publication History Published online1 May 2002Published inissue 1 February 1968https://pubs.acs.org/doi/10.1021/jo01266a007https://doi.org/10.1021/jo01266a007research-articleACS PublicationsRequest reuse permissionsArticle...
The compound erroneously reported as NN-bis(chloromethyldimethylsilyl)acetamide has been proven by single-crystal X-ray analysis to be (O–Si)-chloro-[(N-chlorodimethylsilylacetamido)methyl]dimethylsilane.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure of trimethylsilyl amidesClaude H. Yoder, William C. Copenhafer, and Brent DuBeshterCite this: J. Am. Chem. Soc. 1974, 96, 13, 4283–4286Publication Date (Print):June 1, 1974Publication History Published online1 May 2002Published inissue 1 June 1974https://pubs.acs.org/doi/10.1021/ja00820a037https://doi.org/10.1021/ja00820a037research-articleACS PublicationsRequest reuse permissionsArticle Views435Altmetric-Citations59LEARN ABOUT THESE...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNuclear magnetic resonance studies of the bonding in aromatic systems. Correlation Hammett sigma constants with methyl13C-H coupling and chemical shiftsClaude H. Yoder, Richard Tuck, Ronald E. HessCite this: J. Am. Chem. Soc. 1969, 91, 3, 539–543Publication Date (Print):January 1, 1969Publication History Published online1 May 2002Published inissue 1 January...
The lattice energies for a variety of compounds that can be classified as double salts are calculated by summing the constituent simple salts. A comparison with obtained from Born-Haber or other thermodynamic cycles shows salt approximation reproduces these values generally to within 1.2%, even have considerable covalent character. Application this method calculation silicates, using sum oxides are, on average, 0.2% value experimental enthalpies formation. implications thermodynamics...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHindered rotation in some organometallic carbamates, thiocarbamates, and dithiocarbamatesClaude H. Yoder, Akira Komoriya, John E. Kochanowski, Fred SuydamCite this: J. Am. Chem. Soc. 1971, 93, 24, 6515–6518Publication Date (Print):December 1, 1971Publication History Published online1 May 2002Published inissue 1 December 1971https://doi.org/10.1021/ja00753a030RIGHTS & PERMISSIONSArticle Views236Altmetric-Citations45LEARN ABOUT THESE METRICSArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHindered rotation in trimethylsilyl amidesA. Kormoriya and C. H. YoderCite this: J. Am. Chem. Soc. 1972, 94, 15, 5285–5288Publication Date (Print):July 1, 1972Publication History Published online1 May 2002Published inissue 1 July 1972https://pubs.acs.org/doi/10.1021/ja00770a023https://doi.org/10.1021/ja00770a023research-articleACS PublicationsRequest reuse permissionsArticle Views176Altmetric-Citations33LEARN ABOUT THESE METRICSArticle Views are...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBonding in Group IV aminesJohn Mack and Claude H. YoderCite this: Inorg. Chem. 1969, 8, 2, 278–281Publication Date (Print):February 1, 1969Publication History Published online1 May 2002Published inissue 1 February 1969https://pubs.acs.org/doi/10.1021/ic50072a019https://doi.org/10.1021/ic50072a019research-articleACS PublicationsRequest reuse permissionsArticle Views113Altmetric-Citations34LEARN ABOUT THESE METRICSArticle Views are the...
Abstract Mechanisms for the incorporation of carbonate into minerals apatite group have been explored in both geological and medical literature. An important problem with respect to biological apatite, which requires further clarification, is hydroxyl content carbonated bone. Recent studies reveal bone contain only ∼20 mol.% stoichiometric hydroxylapatite, negligible chloride or fluoride. We investigated hypothesis that development vacancies channel sites a charge-balancing mechanism...
The branched oligogermanium hydride (Ph3Ge)3GeH was synthesized via a hydrogermolysis reaction from GeH4 and Ph3GeNMe2 converted to the halide series of compounds (Ph3Ge)3GeX (X = Cl, Br, I) upon with [Ph3C][PF6] in CH2X2 solvent I). These species were fully characterized by NMR (1H 13C) UV/visible spectroscopy, cyclic voltammetry, elemental analysis. In addition, analyzed 73Ge spectroscopy exhibits two resonances at δ −56 −311 ppm. A Ge−H coupling constant 191 Hz observed proton-coupled...
The substitution of carbonate in apatites has been voraciously explored for more than 60 yr. However, the characterization sites apatite by frequently used identification method, infrared spectroscopy, is still incompletely understood. In a significant departure from previous studies, recent IR study concluded that most resides channels, at least prepared high temperature and pressure. A series A- AB-carbonated calcium strontium have aqueous precipitation carbonation with CO2 800 °C. type...
Abstract Syntheses for the three members of copper hydroxyl nitrate family – polymorphs rouaite and gerhardtite, likasite are presented along with powder diffraction data unit-cell parameters. The solubilities, determined in 0.05 M KNO 3 solution after equilibration at 25°C 10 days were used to calculate activity-based solubility product constants. Gibbs energies formation, obtained from products, –653.2±0.7 kJ/mol, –655.1±1.2 kJ/mol –1506.4±1.1 rouaite, (Cu NO (OH) 5 ·2H 2 O), respectively....
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNuclear magnetic resonance study of some nitrogen-15 substituted azo heterocyclesC. H. Yoder, R. C. Barth, W. M. Richter, and F. A. SnavelyCite this: J. Org. Chem. 1972, 37, 25, 4121–4123Publication Date (Print):December 1, 1972Publication History Published online1 May 2002Published inissue 1 December 1972https://pubs.acs.org/doi/10.1021/jo00798a034https://doi.org/10.1021/jo00798a034research-articleACS PublicationsRequest reuse permissionsArticle...
The recent definitive deuterium solid state NMR spectroscopic evidence for structural water in fluor- and hydroxylapatites has prompted our study of the conditions necessary removal reincorporation this important feature apatites. Thermal gravimetric analysis 20 synthetic carbonated calcium hydroxylapatite (CCaApOH) samples nine fluorapatite (CCaApF) been used to determine amount adsorbed each sample. No correlation between weight percent number moles carbonate CCaApOH CCaApF found. In...
The synthesis of the two digermanes Bus3GeGePh3 and PhMe2GeGePh3, as well branched tetragermane PhGe(GeBun3)3, was achieved using hydrogermolysis reaction. These species were fully characterized by NMR (1H, 13C) spectroscopy elemental analysis, crystal structure PhMe2GeGePh3 determined. three species, along with 11 other oligogermanes, also 73Ge spectroscopy. Chemical shifts resonances for these oligogermanes have been correlated substitution pattern at germanium number germanium−germanium...
Experimentally based lattice energies are calculated for the apatite family of double salts M5(PO4)3X, where M is a divalent metal cation (Ca, Sr, Ba) and X hydroxide or halide. These values also shown to be estimable, generally within 4%, using recently derived Glasser−Jenkins equation, UPOT = AI(2I/Vm)1/3, A 121.39 kJ mol-1. The apatites exhibiting greater covalent character (e.g., Pb, Cd, etc.) less well reproduced but 8% experimentally value. energy ionic (having identical strengths, I)...