ERIC Number: EJ1287203
Record Type: Journal
Publication Date: 2021-Feb
Pages: 8
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: N/A
Multiweek Experiments for an Inorganic Chemistry Laboratory Course: Synthesis of Nickel Complexes Supported by a Tetradentate Ligand with a N[subscript 2]O[subscript 2] Donor Set
Collett, Joel D.; Krause, Jeanette A.; Guan, Hairong
Journal of Chemical Education, v98 n2 p592-599 Feb 2021
Inorganic Chemistry teaches students the concept that modifications to ligand structures, especially the donor properties, can have a drastic impact on the reactivity and stability of the metal complexes. Experiments described here reinforce this concept through the investigation of two tetradentate ligands derived from "o"-phenylenediamine and salicylaldehyde. The Schiff base ligand, H[subscript 2]salophen, reacts with Ni(OAc)[subscript 2]·4H[subscript 2]O to yield a maroon, square planar complex, Ni(salophen). Under the same conditions, the amine-type ligand, H[subscript 2]salophan, forms a light-blue compound analyzed as [Ni(Hsalophan)(OAc)][subscript 2]. The Ni(salophan) complex free of acetate may be produced from the reaction of H[subscript 2]salophan with Ni(OAc)[subscript 2]·4H[subscript 2]O in the presence of NaOH but undergoes ligand dehydrogenation to yield Ni(salophen). Students conducting these experiments have the opportunity to learn synthetic techniques and various characterization methods. Most importantly, the inquiry-guided experimental design helps them develop critical thinking skills and apply acquired knowledge to solving a research problem in a laboratory course.
Descriptors: Inorganic Chemistry, Science Instruction, Science Laboratories, College Science, Undergraduate Study, Inquiry, Spectroscopy, Scientific Concepts, Concept Formation, Science Process Skills, Science Experiments, Laboratory Experiments
Division of Chemical Education, Inc. and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A