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Research

"In essence, science is a perpetual search for an intelligent and integrated comprehension of the world we live in." 
                                                                                                                                                           -Cornelius Bernardus Van Neil (1897-)

The Department of Chemistry, Geosciences, and Environmental Science at Tarleton State University is fortunate to be the recipient of a Chemistry Departmental Research Grant from The Robert A. Welch Foundation of Houston, Texas. A portion of these funds is used to provide undergraduate students with stipends to assist in this research.

Five faculty members are currently involved in basic chemical research projects sponsored by this grant. They are Dr. Peter Bell (Organic Chemistry), Dr. Stephen Field (Geochemistry), Dr. Arthur Low (Theoretical Chemistry), Dr. Harold Rathburn (Biochemistry), and Dr. Linda Schultz (Inorganic Chemistry).

Dr. Linda D. Schultz

Research in my lab has involved several different projects, as listed below:

  • Alkali Metal Polytellurides in Nonaqueous Solvents
  • Alkali Metal Polyselenides in Nonaqueous Solvents
  • Determination of solvent purity using quantitative NMR (QNMR)
  • Submission of Student Projects for Publication to: <i>Journal of Chemical Education
Dr. Arthur Low

During the summer of 2007, I collaborated with Dr. Tom Cundari of University of North Texas performing solid state theoretical calculations on models of TCNQ complexes of platinum using the Crystal software package.
I have also begun work on a paper involving the dimetallic complexes of cyclopentadienyl metal complexes with bridging nitrosyls and carbonyls. The focus of the paper will be the nature of the direct metal-metal interaction in these complexes using the theory of atoms in molecules (AIM) and difference density plots. I am currently working with an undergraduate student (Owen Howard) on producing the difference density plots.

Dr. Peter Bell

Solid Supported O-alkyl isourea: One of our research projects involves the development of a mild, environmentally friendly solid supported medium for alkylation of carboxylic acids to afford esters. This methodology can be extended to alkylation of other suitable species such as amines, sulfur and phosphorous nucleophiles among others.

Quantitative NMR Experiment Development: In conjunction with Dr. Linda Schultz, we have developed and implemented quantitative 1H-NMR experiments to assess the purity/composition of common organic solvents in D2O. Solvents studied include acetone, ethanol, methanol, isopropanol, dimethylformamide, and tetrahydrofuran. The best internal standard studied has been dimethylsulfoxide.

Dr. Stephen Field

This year a research article titled "Diffusion, discontinuous precipitation, metamorphism, and etasomatism: The complex history of South African upper-mantle symplectites was completed. It was published in the Journal American Mineralogist, Volume 93, pages 618-631, 2008.
I am currently writing a research article on a symplectite in an eclogite recovered from the Roberts Victor Mine in South Africa. The paper's title is "A corundum-kyanite-garnet symplectite and the growth of garnet in an aluminous eclogite from the Roberts Victor Kimberlite, South Africa". The paper will be submitted to the Journal "Geology" in September or October of 2008.

Dr. Harold Rathburn

Since Green and Ryan (1972) first suggested a defensive function for trypsin inhibitors (TI) found in plants, a body of evidence has indicated that this relationship does indeed exist. Studies have assayed TI as a component in artificial diets against insect larvae, resulting in reduced larval weight. Transformation of crops with TI genes from other plants has been successful (Hilder et al.,1987; Johnson et al., 1989), favoring the hypothesis of Green and Ryan (1972). Sesbania vesicaria (Jacq.) Ell. (Leguminosae), a legume native to the coastal states, including Texas, has been reported to be toxic to livestock (Kingsbury, 1964). The existence and possible role of TI in Sesbania sp. toxicity has never been explored.

Other Chemistry Faculty
  • Dr. Reuben Walter - Professor
  • Dr. W. Lance Whaley - Assistant Professor
  • Rex Gamble - Instructor
  • Geetha Sundarrajan - Instructor
  • Stephen Mercer - Tech. Stockroom Supervisor
Recent Research Articles and Presentations
  • A.K. Charlton, R.S. Sevcik, D.A. Tucker, and L.D. Schultz, A Colorimetric Analysis Experiment Not Requiring a Spectrophotometer: Quantitative Determination of Albumin in Powdered Egg White, Chem. Educ., 84 (2007) 826.
  • Stephen W. Field, "Diffusion, discontinuous precipitation, metamorphism, and metasomatism: The complex history of South African upper-mantle symplectites;. American Mineralogist, 93, (2008) 618-631.
  • Richard S. Sevcik, Ragan L. McGinty, Susan V. Alexander, and Linda D. Schultz, Periodic Table Target: A Game That Introduces the Biological Significance of Chemical Element Periodicity, J. Chem. Educ., 85 (2008) 514.
  • Richard S. Sevcik, O’dell Hicks, Susan V. Alexander, and Linda D. Schultz, Elements -A Card Game of Chemical Names and Symbols, J. Chem. Educ., 85 (2008) 516.
  • Perez, Lisa M.; Webster, Charles Edwin; Low, Arthur A.; Hall, Michael B. Theoretical study of the biologically important dioxo diiron diamond core structures. Theoretical Chemistry Accounts (2008), 120(4-6), 467-478.
  • Richard S. Sevcik, Rex Gamble, Elizabet Martinez, Susan V. Alexander, and Linda D. Schultz, ;Ionic Blocks, J. Chem. Educ. proofs accepted, will appear in November, 2008.
  • Peter T. Bell, Alyssa D. Adkins, Rex J. Gamble, and Linda D. Schultz, Enthalpy Costs of Making and Breaking Bonds: A Game of Generating Molecules with Proper Lewis Structures, J. Chem. Educ. revised manuscript submitted.
  • Regina A. Oliver, Jeremy R. Andreatta, Richard S. Sevcik, Clifford E. Terrel, Laura B. Rogers, and Linda D. Schultz, An Undergraduate Kinetics Lab Experiment Using the Blue Bottle Demonstration , J. Chem. Educ. under review
Research Presentations Presented by Tarleton State University Faculty and/or Welch Undergraduate Scholars:
  • A College Chemistry Lab Experiment Developed from a Classic Demonstration, Laura B. Rogers, Clifford E.Terrel, and Linda D. Schultz, 5th Annual TAMUS Pathways Student Research Symposium, Tarleton State University, Stephenville, TX, Nov. 3, 2007.
  • A Quantitative NMR Experiment: Determination of Solvent Purity, O’dell Hicks, Peter T. Bell, and Linda D. Schultz, 5th Annual TAMUS Pathways Student Research Symposium, Tarleton State University, Stephenville, TX, Nov. 3, 2007.
  • DMSO as an Internal Standard for the Analysis of Solvent Mixtures by qNMR,Peter T. Bell, O’dell Hicks, Alyssa Adkins, and Linda D. Schultz, 235th ACS National Meeting, New Orleans, LA, April 7, 2008
  • Michalewicz T, Castaneda J, Laney R, Brady J and Rathburn H. Analysis of Dehydrin Genes from Fescue.235th ACS National Meeting, New Orleans, LA, April 7, 2008
  • Laney R, Castaneda J, King J, Rathburn H, Mitchell F and J Brady. Labeling Xylella fastidiosa with autofluorescent proteins.Texas Pierce's Disease Research Symposium, Driftwood, Texas, April 30, 2008.
  • Castaneda J, King J, Laney R, Rathburn H, Mitchell F and J Brady. Multilocus Melt Typing of Xylella fastidiosa subspecies using Real Time PCR.Texas Pierce's Disease Research Symposium, Driftwood, Texas, April 30, 2008.
  • A Green Quantitative NMR Experiment: Acetone and Ethyl Alcohol in D2O, Peter T. Bell and Linda D. Schultz, 232nd ACS National Meeting, San Francisco, CA, September 10, 2006.
  • Analysis of Purity of Common Solvents using Quantitative NMR, Peter T. Bell, Alyssa D. Adkins, and Linda D. Schultz, 233rd ACS National Meeting, Chicago, IL, March 26, 2007.
  • Recycled Paper as a Plywood Component, Adrian Dunson, O’dell Hicks, Elizabet Martinez, and Ragan McGinty, 233rd ACS National Meeting, Chicago, IL, March 26, 2007. This was a finalist in an American Chemical Society national competition.
  • O’dell Hicks and Peter T. Bell, "Abnormal Buffer Region Observed for Silica Attached to 3-aminopropyl-trimethoxysilane," Abstracts of 231st ACS National Meeting, Atlanta, GA, March 27, 2006.
  • Richard S. Sevcik, Jeremy R. Andreatta, and Linda D. Schultz, "Comparison of Potassium Polytellurides in Liquid Ammonia and Dimethylformamide Solution," Abstracts of 231st ACS National Meeting, Atlanta, GA, March 27, 2006.
  • O’Dell Hicks, Elizabet Martinez, Ragan L. McGinty, and R.S. Sevcik, "Chemvention: Toys for Chemical Education," Abstracts of 231st ACS National Meeting, Atlanta, GA, March 27, 2006.
  • Amanda K. Charlton and Harold B. Rathburn, "Development of a Purification Scheme for a Trypsin Inhibitor from a Native Texas Legume", Abstracts of 3rd Annual Texas A&amp;M System Pathways Research Symposium, Texas A&amp;M University-Kingsville, November 4, 2005.
  • A.K. Charlton, R.O. Glenn, J.R. Andreatta, and L.D. Schultz, "The Blue Bottle: New Applications of an Old Demonstration," presented at 229th ACS National Meeting, San Diego, CA, March 14, 2005.
  • A.A. Low, "Bimetallic Complexes with Bridging p-acid Ligands," presented at 60th Southwest Regional ACS Meeting, Ft. Worth, TX, September 30, 2004.
  • A.K. Charlton and R.S. Sevcik, "Chemvention: Colorimetric Determination of Albumin in Powdered Egg Whites with Bromophenol Blue," presented at 229th ACS National Meeting, San Diego, CA, March 14, 2005.
  • A.K Charlton and H.B. Rathburn, "Development of a Purification Scheme for a Trypsin Inhibitor from a Native Texas Legume", presented at 2nd Annual TAMUS Pathways Research Symposium, Texas A&amp;M University--Corpus Christi, TX, October 15-16, 2004.
  • J.R. Andreatta, E.T. Davis, R.A. Oliver, and Linda D. Schultz, "Raman Spectroscopy of Potassium Polytellurides in Nonaqueous Solvents," presented at 227th ACS National Meeting, Anaheim, CA, March 29, 2004.
  • A.A. Low, "Nature of Metal-metal Bonds in Complexes with p-acid Ligands," presented at 227th ACS National Meeting, Anaheim, CA, March 31, 2004.
  • R.A. Oliver, J.R. Andreatta, and A. Charlton, "Chemvention: Detecting Increases and Decreases of Oxygen in the Atmosphere," presented at 227th ACS National Meeting, Anaheim, CA, March 29, 2004.
  • Jeremy R. Andreatta, J.L. McAfee, and Linda D. Schultz, "Potassium Polytellurides in Nonaqueous Solvents" presented at 225th ACS National Meeting, New Orleans, LA, March 24, 2003.
  • Equilibrium Among Potassium Polytellurides in Dimethylformamide Solution,; Richard S. Sevcik, Peter D. Poulsen, and Linda D. Schultz, 62nd ACS Southwest Regional Meeting, Houston, TX, October 20, 2006.