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Sarah Arradondo

Assistant Professor of Physical Chemistry

Ph.D. Computational Physical Chemistry

      University of Mississippi, University, MS

B.S. ACS-Certified Chemistry

      Winona State University, Winona, MN


The Arradondo lab characterizes various non-covalent interactions within interesting systems using ab initio methods and density functionals in conjugation with large robust basis sets. We are currently investigating the different configurations within several room temperature ionic liquids along with the hydrogen bond networks that these materials have water and how these interactions may affect the materials bulk phase properties when including a co-solvent.  We also plan on collaborating with experimental scientists through a diverse range of topics including, atmospheric chemistry, material science and spectroscopy.  I am also interested in pursuing chemical and technological education research and how to infuse science and technology into the classroom as well as our daily lives.

      We have access to a large office space which includes eight desktop workstations that each have 32 GB of memory and Intel i5 hexa-core processors. In addition to local computational resources, we also have access to two different high-performance computing facilities that are maintained by our participation in the MERCURY Consortium (Molecular Education and Research Consortium in Undergraduate computational chemistRY).


Research Opportunities for Students

      I am always looking for interested students that would like to pursue interdisciplinary research. My research sits between four major fields, chemistry, physics, computer science and mathematics. Any student that is interested in any of these fields should email me or stop by my office to chat about research opportunities. 


  • S. N. Johnson, T. L. Ellington, D. T. Ngo, J. L. Nevarez, N. Sparks, A. L. Rheingold, D. L. Watkins and G. S. Tschumper, CrystEngComm, 21, 3151-3157 (2019). Probing Non-covalent Interactions Driving Molecular Assembly in Organo-electronic Building Blocks.
  • S. P. Lee, S. N. Johnson, T. L. Ellington, N. Mirsaleh-Kohan and G. S. Tschumper, ACS Omega., 3, 12936-12943 (2018). Energetics and Vibrational Signatures of Nucleobase Argyphilic Interactions. 

  • S. N. Johnson, C. R. Hutchison, C. M. Williams, C. L. Hussey, G. S. Tschumper, and N. I. Hammer, J. Phys. Chem. C., 122, 27673-27680 (2018). Intermolecular Interactions and Vibrational Perturbations within Mixtures of 1-Ethyl-3-methylimidazolium Thiocyanate and Water. 

  • S.N. Johnson and G.S. Tschumper, J. Comput. Chem., 39, 839-843 (2018). Hydrogen Bonding in the Mixed HF/HCl Dimer: Is It Better to Give or Receive? 

  • G.S. Tschumper, T.L. Ellington and S. N. Johnson, Ann. Rep. Comput. Chem., 13, 93-115 (2017). Dissociation in Binary Acid/Base Clusters: An Examination of Inconsistencies Introduced Into the Many-Body Expansion by Naïve Fragmentation Schemes. 

  • FYS 101: Technology: Savior or Saboteur?
  • CHE 220: Quantitative Chemical Analysis
  • CHE 305: Thermodynamics & Kinetics
  • CHE 306: Quantum Chemistry & Spectroscopy
Professional Experience
  • Member of the Molecular Education and Research Consortium in Undergraduate computational chemistRY (MERCURY) Consortium
  • Member of the Southeastern Theoretical Chemistry Association (SETCA)
  • Member of the National American Chemistry Society