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 | |
| Publication status | Published - 1993 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Instrumentation
- Physics and Astronomy (miscellaneous)
Cite this
High-pressure stopped-flow nuclear magnetic resonance apparatus for the study of fast reactions in solution. / Funahashi, Shigenobu; Ishihara, Koji; Aizawa, Sen Ichi; Sugata, Takashi; Ishii, Masao; Inada, Yasuhiro; Tanaka, Motoharu.
In: Review of Scientific Instruments, Vol. 64, No. 1, 1993, p. 130-134.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - High-pressure stopped-flow nuclear magnetic resonance apparatus for the study of fast reactions in solution
AU - Funahashi, Shigenobu
AU - Ishihara, Koji
AU - Aizawa, Sen Ichi
AU - Sugata, Takashi
AU - Ishii, Masao
AU - Inada, Yasuhiro
AU - Tanaka, Motoharu
PY - 1993
Y1 - 1993
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.
AB - 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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UR - http://www.scopus.com/inward/citedby.url?scp=0000393076&partnerID=8YFLogxK
U2 - 10.1063/1.1144426
DO - 10.1063/1.1144426
M3 - Article
VL - 64
SP - 130
EP - 134
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
SN - 0034-6748
IS - 1
ER -