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ERIC Number: EJ1138783
Record Type: Journal
Publication Date: 2017-Apr
Pages: 4
Abstractor: As Provided
ISSN: ISSN-0021-9584
Introducing Students to Inner Sphere Electron Transfer Concepts through Electrochemistry Studies in Diferrocene Mixed-Valence Systems
Ventura, Karen; Smith, Mark B.; Prat, Jacob R.; Echegoyen, Lourdes E.; Villagran┬┤, Dino
Journal of Chemical Education, v94 n4 p526-529 Apr 2017
We have designed a 4 h physical chemistry laboratory to introduce upper division students to electrochemistry concepts, including mixed valency and electron transfer (ET), using cyclic and differential pulse voltammetries. In this laboratory practice, students use a ferrocene dimer consisting of two ferrocene centers covalently bonded through a dimethylethylene bridge as a platform for the measurement of inner-sphere ET. The degree of electronic communication between the ferrocene redox centers is measured by the magnitude of the equilibrium constant of the comproportionation reaction that yields the mixed-valent ferrocene dimer. Students measure the difference in E[subscript 1/2] from the electrochemistry of the ferrocene dimers and categorize these ferrocene dimers according to the Robin-Day classification. We include an interactive presentation, a student handout, and one sample quiz.
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:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: National Science Foundation (NSF)
Authoring Institution: N/A
Grant or Contract Numbers: CHE1305124; DUE1140469