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An Electrochemical Experiment to Monitor the Isomerization of trans- to cis-[RuCl2(dppb)(phen)]. An Undergraduate Cyclic Voltammetry Experiment for Inorganic Chemistry

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Salete L. Queiroz , Márcio P. de Araujo , and Alzir A. Batista

Departamento de Química, Universidade Federal de São Carlos, CP 676, CEP 13565-905, São Carlos, SP, Brazil

Kenneth S. MacFarlane and Brian R. James

Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada

J. Chem. Educ., 2001, 78 (1), p 89

DOI: 10.1021/ed078p89

Publication Date (Web): January 1, 2001

Section:

History, Education, and Documentation

Abstract

A cyclic voltammetric experiment for undergraduate students is presented involving the conversion of trans-[RuCl₂(dppb)(phen)] to cis-[RuCl₂(dppb)(phen)] (dppb = 1,4-bis(diphenylphosphino)butane; phen = 1,10-phenanthroline). This experiment (i) is a good introduction to the use of electrochemical techniques, (ii) gives students experience in electrochemical principles and in measuring current and potential, (iii) gives students the opportunity to calculate half-wave potentials from the experimental oxidation and reduction waves, and (iv) illustrates the use of CV to monitor an isomerization process involving an inorganic coordination compound. The experiment can be completed in about four hours of laboratory time.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Inorganic Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Coordination Compounds

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This article has been cited by 4 ACS Journal articles (4 most recent appear below).

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  An advanced undergraduate laboratory experiment is described in which the students use cyclic voltammetry (CV) as an electrochemical tool to probe the passivation of electrode surfaces covered by well-ordered self-assembly and Langmuir–Blodgett films. ...
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Journal of Chemical Education2006 83 (9), 1349
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Ruthenium Phosphine/Diimine Complexes: Syntheses, Characterization, Reactivity with Carbon Monoxide, and Catalytic Hydrogenation of Ketones
Márcio P. de Araujo, Alberthmeiry T. de Figueiredo, André L. Bogado, Gustavo Von Poelhsitz, Javier Ellena, Eduardo E. Castellano, Claudio L. Donnici, João V. Comasseto, and Alzir A. Batista
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- Ruthenium Phosphine/Diimine Complexes: Syntheses, Characterization, Reactivity with Carbon Monoxide, and Catalytic Hydrogenation of Ketones
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  The cis-[RuCl2(PPh3)2(N−N)] (N−N = bipy (1), Me-bipy (2), phen (3), and bathophen (4)) complexes were used to synthesize five new electron-rich phosphine-containing complexes cis-[RuCl2(dcype)(N−N)] (N−N = bipy (1a), Me-bipy (2a), phen (3a), and bathophen ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links