High-pressure stopped-flow nuclear magnetic resonance apparatus for the study of fast reactions in solution

Shigenobu Funahashi; Koji Ishihara; Sen Ichi Aizawa; Takashi Sugata; Masao Ishii; Yasuhiro Inada; Motoharu Tanaka

doi:10.1063/1.1144426

High-pressure stopped-flow nuclear magnetic resonance apparatus for the study of fast reactions in solution

Shigenobu Funahashi, Koji Ishihara, Sen Ichi Aizawa, Takashi Sugata, Masao Ishii, Yasuhiro Inada, Motoharu Tanaka

School of Advanced Science and Engineering

Research output: Contribution to journal › Article

15 Citations (Scopus)

Abstract

A high-pressure proton nuclear magnetic resonance (NMR) probe for a stopped-flow method has been developed, which enables us to follow fast reactions at various pressures up to 200 MPa. The high-pressure stopped-flow NMR (HP-SF-NMR) method has been applied to the study of several reactions at high pressures: the reaction of tetramethyltin with iodine in chloroform and the solvent exchange reaction on aluminum(III) ion in N, N-dimethylformamide. The volumes of activation for the iodomerization of tin and the solvent exchange reaction on aluminum(III) were determined to be -24.9±3.8 cm³ mol^-1 and -2.2±0.8 cm³ mol^-1, respectively. The apparatus permits measurement of activation volumes for reactions with half lives longer than a few seconds if the nuclear relaxation time of the measured proton is short enough. Several requirements for the applicability of HP-SF-NMR are discussed.

Original language	English
Pages (from-to)	130-134
Number of pages	5
Journal	Review of Scientific Instruments
Volume	64
Issue number	1
DOIs	https://doi.org/10.1063/1.1144426
Publication status	Published - 1993 Dec 1

ASJC Scopus subject areas

Instrumentation

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Funahashi, S., Ishihara, K., Aizawa, S. I., Sugata, T., Ishii, M., Inada, Y., & Tanaka, M. (1993). High-pressure stopped-flow nuclear magnetic resonance apparatus for the study of fast reactions in solution. Review of Scientific Instruments, 64(1), 130-134. https://doi.org/10.1063/1.1144426

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abstract = "A high-pressure proton nuclear magnetic resonance (NMR) probe for a stopped-flow method has been developed, which enables us to follow fast reactions at various pressures up to 200 MPa. The high-pressure stopped-flow NMR (HP-SF-NMR) method has been applied to the study of several reactions at high pressures: the reaction of tetramethyltin with iodine in chloroform and the solvent exchange reaction on aluminum(III) ion in N, N-dimethylformamide. The volumes of activation for the iodomerization of tin and the solvent exchange reaction on aluminum(III) were determined to be -24.9±3.8 cm3 mol-1 and -2.2±0.8 cm3 mol-1, respectively. The apparatus permits measurement of activation volumes for reactions with half lives longer than a few seconds if the nuclear relaxation time of the measured proton is short enough. Several requirements for the applicability of HP-SF-NMR are discussed.",

author = "Shigenobu Funahashi and Koji Ishihara and Aizawa, {Sen Ichi} and Takashi Sugata and Masao Ishii and Yasuhiro Inada and Motoharu Tanaka",

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AU - Funahashi, Shigenobu

AU - Ishihara, Koji

AU - Aizawa, Sen Ichi

AU - Sugata, Takashi

AU - Ishii, Masao

AU - Inada, Yasuhiro

AU - Tanaka, Motoharu

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N2 - A high-pressure proton nuclear magnetic resonance (NMR) probe for a stopped-flow method has been developed, which enables us to follow fast reactions at various pressures up to 200 MPa. The high-pressure stopped-flow NMR (HP-SF-NMR) method has been applied to the study of several reactions at high pressures: the reaction of tetramethyltin with iodine in chloroform and the solvent exchange reaction on aluminum(III) ion in N, N-dimethylformamide. The volumes of activation for the iodomerization of tin and the solvent exchange reaction on aluminum(III) were determined to be -24.9±3.8 cm3 mol-1 and -2.2±0.8 cm3 mol-1, respectively. The apparatus permits measurement of activation volumes for reactions with half lives longer than a few seconds if the nuclear relaxation time of the measured proton is short enough. Several requirements for the applicability of HP-SF-NMR are discussed.

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