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Synthesis of [RuCl2(dppb)(PPh3)] and Identification of the cis- and trans-[RuCl2(dppb)(phen)] Geometrical Isomers via 31P{1H} NMR Spectroscopy. An Undergraduate Experiment for Inorganic Chemistry
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Abstract
A 31P{1H} NMR 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) demonstrates the use of 31P{1H} NMR to distinguish between cis and trans geometric isomers of coordination compounds in solution, (ii) describes the concept of spin-spin coupling for P atoms by assigning signals to equivalent and nonequivalent P atoms, and (iii) offers an introduction to synthesis and in situ NMR work requiring semirigorous, inert-atmosphere conditions. The experiment can be accommodated in about four hours of laboratory time.
Keywords (Audience):
Upper-Division UndergraduateKeywords (Domain):
Inorganic ChemistryKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
Coordination CompoundsCiting Articles
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This article has been cited by 5 ACS Journal articles (5 most recent appear below).
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Elena Cerrada and Mariano LagunaJournal of Chemical Education2005 82 (4), 630The use of diphosphines such as bis(diphenylphosphine)ethane (dppe) or bis(diphenylphosphine)methane (dppm) with dithiolate gold(I) derivatives induces the isolation of dithiolate gold(I) complexes with two different structures and stoichiometries ...
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Benjamin J. CoeJournal of Chemical Education2004 81 (5), 718Syntheses and Characterization of Ruthenium(II) Tetrakis(Pyridine) Complexes. An Advanced Coordination Chemistry Experiment or Mini-Project
Benjamin J. CoeJournal of Chemical Education2004 81 (5), 718This experiment involves the syntheses of several coordination complexes of ruthenium(II) and their characterization by using various spectroscopic and spectrometric techniques. Because ruthenium is a precious metal all of the reactions are carried out on ...
An Electrochemical Experiment to Monitor the Isomerization of trans- to cis-[RuCl2(dppb)(phen)]. An Undergraduate Cyclic Voltammetry Experiment for Inorganic Chemistry
Salete L. Queiroz , Márcio P. de Araujo , and Alzir A. Batista , Kenneth S. MacFarlane and Brian R. JamesJournal of Chemical Education2001 78 (1), 89An Electrochemical Experiment to Monitor the Isomerization of trans- to cis-[RuCl2(dppb)(phen)]. An Undergraduate Cyclic Voltammetry Experiment for Inorganic Chemistry
Salete L. Queiroz , Márcio P. de Araujo , and Alzir A. Batista , Kenneth S. MacFarlane and Brian R. JamesJournal of Chemical Education2001 78 (1), 89A 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 ...
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- Received: August 03, 2009
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