Using<sup>195</sup>Pt and<sup>31</sup>P NMR To Characterize Organometallic Complexes: Heteronuclear Coupling in the Presence of Geometric Isomers

Janzen, Daron E.; Hang, M.; Kaup, H.

doi:10.1021/bk-2013-1128.ch010

Cited by 3 publications

(2 citation statements)

References 39 publications

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“…has received less attention in the undergraduate curriculum. Hands-on laboratory experiments have been designed to expand student understanding of the applicability of NMR spectroscopy such as synthesizing and analyzing compounds containing 19 F, 27 Al, 31 P, 77 Se, and 195 Pt. − However, usage of such experiments enables discussion of only a single NMR-active nucleus at a time and requires laboratory time and an NMR spectrometer. To expand the discussion to other NMR-active nuclei, multiple experiments would be required to generate a variety of compounds for spectroscopic analysis.…”

Section: Purposementioning

confidence: 99%

NMR Structure Elucidation in the Presence of Heteroatoms: An In-Class Activity

Rocks

Stockland

2020

J. Chem. Educ.

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In the undergraduate curriculum, the focus of NMR spectroscopy is predominately on molecules containing 1H and 13C as the sole NMR-active nuclei. Teaching students about the impact of NMR-active heteronuclei such as 19F or 31P can be challenging to fit in the undergraduate curriculum, especially if NMR instrumentation and/or a range of compounds are not available. We present an activity to be conducted in class that exposes undergraduates to how heteronuclear NMR spectroscopy can be used to aid in structure elucidation when NMR-active heteroatoms are present. The purpose of the activity is both to expand student understanding of NMR applications as well as further their understanding of the underlying principles of NMR. The activity utilizes a comparative analysis of 1H and 13C NMR spectra of a compound containing no NMR-active heteroatoms with a structurally analogous compound containing I > 0 heteroatoms. Students are tasked with predicting the impact of the heteroatom on the NMR spectrum, followed by the assignment of signals in the actual NMR spectra.

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Section: Purposementioning

confidence: 99%

NMR Structure Elucidation in the Presence of Heteroatoms: An In-Class Activity

Rocks

Stockland

2020

J. Chem. Educ.

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“…While many teaching laboratories have incorporated 31 P{ 1 H} NMR into their curriculum, the most recent examples are limited to the investigation of stereochemistry or of nucleophilic substitutions in organic chemistry laboratories. Those experiments designed to introduce 31 P{ 1 H} NMR spectroscopy in inorganic laboratories typically use expensive metals like platinum − or ruthenium, , coordinate organic ligands in addition to the P-donor ligand, − involve time-consuming syntheses, , or use a narrow range of P-donor ligands. − …”

Section: Introductionmentioning

confidence: 99%

A ³¹P{¹H} NMR Spectroscopic Study of Phosphorus-Donor Ligands and Their Transition Metal Complexes

et al. 2018

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31P{1H} nuclear magnetic resonance spectroscopy is a particularly useful tool for studying the reactions of P-donor ligands such as phosphines and phosphites with transition metals and other Lewis bases because the reactions take place on the nonbonding pair of electrons on the phosphorus. In addition, 31P has a 100% natural abundance and a high gyromagnetic ratio resulting in a high sensitivity that allows the spectra to be recorded using small amounts of sample. An activity that combines air-sensitive synthesis of transition metal complexes of P-donor ligands and the characterization of these complexes with 31P{1H} NMR spectroscopy has been developed for an upper-division, laboratory-based inorganic course. This laboratory familiarizes students with this useful nucleus for NMR spectroscopy and allows them to study the factors that affect the 31P{1H} NMR chemical shifts of phosphorus-donor ligands and their transition metal complexes. Details of the activity, including procedure and pretest, are provided. Alternative methods and presentations are also proposed.

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Heteronuclear NMR Spectroscopy in the Undergraduate Curriculum: Direct and Indirect Effects

Rocks

Stockland

2021

ACS Symposium Series

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Using¹⁹⁵Pt and³¹P NMR To Characterize Organometallic Complexes: Heteronuclear Coupling in the Presence of Geometric Isomers

Cited by 3 publications

References 39 publications

NMR Structure Elucidation in the Presence of Heteroatoms: An In-Class Activity

NMR Structure Elucidation in the Presence of Heteroatoms: An In-Class Activity

A ³¹P{¹H} NMR Spectroscopic Study of Phosphorus-Donor Ligands and Their Transition Metal Complexes

Heteronuclear NMR Spectroscopy in the Undergraduate Curriculum: Direct and Indirect Effects

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Using195Pt and31P NMR To Characterize Organometallic Complexes: Heteronuclear Coupling in the Presence of Geometric Isomers

Cited by 3 publications

References 39 publications

NMR Structure Elucidation in the Presence of Heteroatoms: An In-Class Activity

NMR Structure Elucidation in the Presence of Heteroatoms: An In-Class Activity

A 31P{1H} NMR Spectroscopic Study of Phosphorus-Donor Ligands and Their Transition Metal Complexes

Heteronuclear NMR Spectroscopy in the Undergraduate Curriculum: Direct and Indirect Effects

Contact Info

Product

Resources

About

Using¹⁹⁵Pt and³¹P NMR To Characterize Organometallic Complexes: Heteronuclear Coupling in the Presence of Geometric Isomers

A ³¹P{¹H} NMR Spectroscopic Study of Phosphorus-Donor Ligands and Their Transition Metal Complexes