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Lang, Peter F. – Journal of Chemical Education, 2018
This work outlines the inadequacies of the "ions in a sea of electrons" model. Some general properties of metals are stated. A different "soft/flexible" sphere model is described. The benefits of using this other model to account for metallic properties are discussed. Equations based on the soft sphere model are used to…
Descriptors: Inorganic Chemistry, College Science, Undergraduate Study, Science Instruction
Weiss, Charles J.; Porter, Lon A., Jr. – Journal of Chemical Education, 2020
The ability to perform air-free chemistry and catalytic reactions on an NMR tube scale are valuable skills in chemistry and not often included in undergraduate chemistry curriculum. This laboratory experiment provides students experience in synthesizing the metal complex, Ni(dcpe)(CH[subscript 3]CN)[subscript 2](BF[subscript 4])[subscript 2] (dcpe…
Descriptors: Science Instruction, Scientific Concepts, Undergraduate Study, College Science
Geiger, William E. – Journal of Chemical Education, 2018
An integrated pair of experiments has been developed to introduce undergraduate students to the ways in which electrochemistry can complement conventional synthetic chemistry involving redox reactions. Students first use cyclic voltammetry and linear scan voltammetry to characterize and quantify the products of the reaction between…
Descriptors: Science Instruction, Science Experiments, College Science, Undergraduate Study
Pagano, Justin K.; Jaworski, Leslie; Lopatto, David; Waterman, Rory – Journal of Chemical Education, 2018
A research-based inorganic chemistry laboratory course is described. Using the defined protocol of a course-based undergraduate research experience (CURE), students undertake a self-designed research project to identify new catalysts for the dehydrogenation of ammonia borane. Students select ligands and metals, prepare and characterize catalysts…
Descriptors: Inorganic Chemistry, Science Instruction, Science Laboratories, Undergraduate Study
Tyler, Sarah F.; Judkins, Eileen C.; Morozov, Dmitry; Borca, Carlos H.; Slipchenko, Lyudmila V.; McMillin, David R. – Journal of Chemical Education, 2017
Electronic spectra often exhibit vibronic structure when vibrational and electronic transitions occur in concert. Theory reveals (1) that orbital symmetry considerations determine specific roles played by the nuclear degrees of freedom and (2) that the vibrational excitation is often highly regiospecific, that is, attributable to an identifiable…
Descriptors: Science Instruction, College Science, Undergraduate Study, Inorganic Chemistry
Fernández, Alberto; López-Torres, Margarita; Fernández, Jesús J.; Vázquez-García, Digna; Marcos, Ismael – Journal of Chemical Education, 2017
A laboratory experiment for students in advanced inorganic chemistry is described. In this experiment, students prepare two metal complexes with a potentially bidentate-carbene ligand. The complexes are synthesized by reaction of a bisimidazolium salt with silver(I) oxide or palladium(II) acetate. Silver and palladium complexes are binuclear and…
Descriptors: Science Instruction, Science Laboratories, Laboratory Experiments, Science Experiments
Montgomery, Craig D. – Journal of Chemical Education, 2015
An exercise in molecular modeling that demonstrates the distinctive features of Fischer and Schrock carbene complexes is presented. Semi-empirical calculations (PM3) demonstrate the singlet ground electronic state, restricted rotation about the C-Y bond, the positive charge on the carbon atom, and hence, the electrophilic nature of the Fischer…
Descriptors: Science Instruction, Molecular Structure, Inorganic Chemistry, Metallurgy
Cooke, Jason; Hebert, Dominique; Kelly, Joel A. – Journal of Chemical Education, 2015
This work describes a convenient and reliable laboratory experiment in nanochemistry that is flexible and adaptable to a wide range of educational settings. The rapid preparation of yellow colloidal silver nanoparticles is achieved by glucose reduction of silver nitrate in the presence of starch and sodium citrate in gently boiling water, using…
Descriptors: Science Instruction, Science Laboratories, Science Experiments, Laboratory Experiments
Green, Malcolm L. H.; Parkin, Gerard – Journal of Chemical Education, 2014
The Covalent Bond Classification (CBC) method provides a means to classify covalent molecules according to the number and types of bonds that surround an atom of interest. This approach is based on an elementary molecular orbital analysis of the bonding involving the central atom (M), with the various interactions being classified according to the…
Descriptors: Science Instruction, Inorganic Chemistry, College Science, Energy
Orbaek, Alvin W.; McHale, Mary M.; Barron, Andrew R. – Journal of Chemical Education, 2015
The aim of this simple, quick, and safe laboratory exercise is to provide undergraduate students an introduction to nanotechnology using nanoparticle (NP) synthesis. Students are provided two procedures that allow for the synthesis of different yet controlled sizes of silver NPs. After preparing the NPs, the students perform UV-visible…
Descriptors: College Science, Science Instruction, Undergraduate Study, Science Laboratories
Sues, Peter E.; Cai, Kuihua; McIntosh, Douglas F.; Morris, Robert H. – Journal of Chemical Education, 2015
Asymmetric transfer hydrogenation is an important transformation for the production of fine chemicals. Traditionally, platinum group metals are used to catalyze this reaction, but recent pressure for greener practices has driven the development of base-metal catalysts. Due to the growing interest in this area of research, the underlying concepts…
Descriptors: Science Instruction, Inorganic Chemistry, College Science, Undergraduate Study
Barrett, Jacob; Spentzos, Ariana; Works, Carmen – Journal of Chemical Education, 2015
The organometallic complex Fe[subscript 2](µ-S[subscript 2])(CO)[subscript 6] has interesting biological implications. The concepts of bio-organometallic chemistry are rarely discussed at the undergraduate level, but this experiment can start such a conversation and, in addition, teach valuable synthetic techniques. The lab experiment takes a…
Descriptors: Science Instruction, Science Laboratories, Laboratory Experiments, Science Experiments
Johnson, Brian J.; Graham, Kate J. – Journal of Chemical Education, 2015
This paper will describe a guided inquiry activity for teaching ligand field theory. Previous research suggests the guided inquiry approach is highly effective for student learning. This activity familiarizes students with the key concepts of molecular orbital theory applied to coordination complexes. Students will learn to identify factors that…
Descriptors: Inquiry, Science Instruction, Teaching Methods, Scientific Concepts
Mattson, Bruce; Foster, Wendy; Greimann, Jaclyn; Hoette, Trisha; Le, Nhu; Mirich, Anne; Wankum, Shanna; Cabri, Ann; Reichenbacher, Claire; Schwanke, Erika – Journal of Chemical Education, 2013
The hydrogenation of alkenes by heterogeneous catalysts has been studied for 80 years. The foundational mechanism was proposed by Horiuti and Polanyi in 1934 and consists of three steps: (i) alkene adsorption on the surface of the hydrogenated metal catalyst, (ii) hydrogen migration to the beta-carbon of the alkene with formation of a delta-bond…
Descriptors: Science Instruction, College Science, Inorganic Chemistry, Undergraduate Study
Fernandez, Alberto; Lopez-Torres, Margarita; Fernandez, Jesus J.; Vazquez-Garcia, Digna; Vila, Jose M. – Journal of Chemical Education, 2012
A laboratory experiment for students in advanced inorganic chemistry is described. Students prepare palladium(II) cyclometalated complexes. A terdentate [C,N,O] Schiff base ligand is doubly deprotonated upon reaction with palladium(II) acetate in a self-assembly process to give a palladacycle with a characteristic tetranuclear structure. This…
Descriptors: Laboratory Experiments, Inorganic Chemistry, College Science, Science Laboratories
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