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1,5 Cyclooctadiene Complexes of Iridium: Synthesis, Characterization, and Reaction with Dihydrogen. An Experiment for an Integrated Physical/Inorganic Laboratory Course

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John W. Logan and Mark Wicholas

Department of Chemistry, Western Washington University, Bellingham, WA 98225

J. Chem. Educ., 2001, 78 (9), p 1272

DOI: 10.1021/ed078p1272

Publication Date (Web): September 1, 2001

Section:

History, Education, and Documentation

Abstract

An experiment for an integrated physical/inorganic laboratory course involving a sequence of reactions starting with the iridium(I) complex [Ir(COD)Cl]₂, COD = 1,5-cyclooctadiene, is presented. The crux of the experiment is the reaction of [Ir(COD)(Ph₃P)₂]BF₄ with dihydrogen in a valve NMR tube in the absence of dioxygen and the determination of the coordination mode of dihydrogen, η²-H₂ or dihydride, by a NMR T₂ relaxation measurement.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Inorganic Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Coordination Compounds

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1,5 Cyclooctadiene Complexes of Iridium: Synthesis, Characterization, and Reaction with Dihydrogen. An Experiment for an Integrated Physical/Inorganic Laboratory Course