Variable Pressure Oxygen-17 FTNMR and Stopped-Flow Kinetic Study of Water Exchange and DMSO Substitution on Square-Planar Tetraaqua-Palladium(II) and       -Platinum(II)

Yves Ducommun; P. J. Nichols; Lothar Helm; Lars Ivar Elding; Andre E. Merbach

doi:10.1051/jphyscol:1984842

Variable Pressure Oxygen-17 FTNMR and Stopped-Flow Kinetic Study of Water Exchange and DMSO Substitution on Square-Planar Tetraaqua-Palladium(II) and -Platinum(II)

Yves Ducommun, P. J. Nichols, Lothar Helm, Lars Ivar Elding, Andre E. Merbach

Centre for Analysis and Synthesis

Swiss Federal Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

The very slow water exchange on Pt(H2O)42+ was studied in the temperature range 273 to 334 K and pressure range 0.1 to 228 MPa by 17O FTNMR, following the increase in height of the signal from bound water observed when platinum(II) solutions are mixed with 17O enriched water. The much faster water exchange on Pd(H2O)42+ was studied in the temperature range 240 to 345 K and pressure range 0.1 to 260 MPa, by measuring the 17O FTNMR line widths of the bound water resonance at 27.1 and 48.7 MHz. Complex formation between DMSO and Pd(H2O)42+ was studied by stopped-flow, in the temperature range 288 to 309 K and pressure range 0.1 to 175 MPa. In the three cases, the results are interpreted in terms of associative activation modes (a).

Original language	English
Pages (from-to)	C8 221-C8 224
Number of pages	4
Journal	Journal de Physique. Colloques
Volume	45
Issue number	C8
DOIs	https://doi.org/10.1051/jphyscol:1984842
Publication status	Published - 1984 Nov

Subject classification (UKÄ)

Inorganic Chemistry

Free keywords

Water exchange
Tetraaquaplatinum(II)
Tetraaquapalladium(II)
DMSO substitution
Dimethyl sulfoxide
Oxygen-17 NMR
High pressure kinetics
Activation parameters
Reaction mechanism

Access to Document

10.1051/jphyscol:1984842

Cite this

@article{0a90e4b92bad48ac84c3d25f7f560896,

title = "Variable Pressure Oxygen-17 FTNMR and Stopped-Flow Kinetic Study of Water Exchange and DMSO Substitution on Square-Planar Tetraaqua-Palladium(II) and -Platinum(II)",

abstract = "The very slow water exchange on Pt(H2O)42+ was studied in the temperature range 273 to 334 K and pressure range 0.1 to 228 MPa by 17O FTNMR, following the increase in height of the signal from bound water observed when platinum(II) solutions are mixed with 17O enriched water. The much faster water exchange on Pd(H2O)42+ was studied in the temperature range 240 to 345 K and pressure range 0.1 to 260 MPa, by measuring the 17O FTNMR line widths of the bound water resonance at 27.1 and 48.7 MHz. Complex formation between DMSO and Pd(H2O)42+ was studied by stopped-flow, in the temperature range 288 to 309 K and pressure range 0.1 to 175 MPa. In the three cases, the results are interpreted in terms of associative activation modes (a).",

keywords = "Water exchange, Tetraaquaplatinum(II), Tetraaquapalladium(II), DMSO substitution, Dimethyl sulfoxide, Oxygen-17 NMR, High pressure kinetics, Activation parameters, Reaction mechanism",

author = "Yves Ducommun and Nichols, {P. J.} and Lothar Helm and Elding, {Lars Ivar} and Merbach, {Andre E.}",

year = "1984",

month = nov,

doi = "10.1051/jphyscol:1984842",

language = "English",

volume = "45",

pages = "C8 221--C8 224",

journal = "Journal de Physique. Colloques",

publisher = "EDP Sciences",

number = "C8",

}

Variable Pressure Oxygen-17 FTNMR and Stopped-Flow Kinetic Study of Water Exchange and DMSO Substitution on Square-Planar Tetraaqua-Palladium(II) and -Platinum(II). / Ducommun, Yves; Nichols, P. J.; Helm, Lothar et al.
In: Journal de Physique. Colloques, Vol. 45, No. C8, 11.1984, p. C8 221-C8 224.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Variable Pressure Oxygen-17 FTNMR and Stopped-Flow Kinetic Study of Water Exchange and DMSO Substitution on Square-Planar Tetraaqua-Palladium(II) and -Platinum(II)

AU - Ducommun, Yves

AU - Nichols, P. J.

AU - Helm, Lothar

AU - Elding, Lars Ivar

AU - Merbach, Andre E.

PY - 1984/11

Y1 - 1984/11

N2 - The very slow water exchange on Pt(H2O)42+ was studied in the temperature range 273 to 334 K and pressure range 0.1 to 228 MPa by 17O FTNMR, following the increase in height of the signal from bound water observed when platinum(II) solutions are mixed with 17O enriched water. The much faster water exchange on Pd(H2O)42+ was studied in the temperature range 240 to 345 K and pressure range 0.1 to 260 MPa, by measuring the 17O FTNMR line widths of the bound water resonance at 27.1 and 48.7 MHz. Complex formation between DMSO and Pd(H2O)42+ was studied by stopped-flow, in the temperature range 288 to 309 K and pressure range 0.1 to 175 MPa. In the three cases, the results are interpreted in terms of associative activation modes (a).

AB - The very slow water exchange on Pt(H2O)42+ was studied in the temperature range 273 to 334 K and pressure range 0.1 to 228 MPa by 17O FTNMR, following the increase in height of the signal from bound water observed when platinum(II) solutions are mixed with 17O enriched water. The much faster water exchange on Pd(H2O)42+ was studied in the temperature range 240 to 345 K and pressure range 0.1 to 260 MPa, by measuring the 17O FTNMR line widths of the bound water resonance at 27.1 and 48.7 MHz. Complex formation between DMSO and Pd(H2O)42+ was studied by stopped-flow, in the temperature range 288 to 309 K and pressure range 0.1 to 175 MPa. In the three cases, the results are interpreted in terms of associative activation modes (a).

KW - Water exchange

KW - Tetraaquaplatinum(II)

KW - Tetraaquapalladium(II)

KW - DMSO substitution

KW - Dimethyl sulfoxide

KW - Oxygen-17 NMR

KW - High pressure kinetics

KW - Activation parameters

KW - Reaction mechanism

U2 - 10.1051/jphyscol:1984842

DO - 10.1051/jphyscol:1984842

M3 - Article

VL - 45

SP - C8 221-C8 224

JO - Journal de Physique. Colloques

JF - Journal de Physique. Colloques

IS - C8