Intramolecular and reorientation dynamics of bis(triphenylphosphine)-3,6-di-tert-butyl-4,5-dimethoxy-o-semiquinone complex of copper(i) in viscous media

Rakhim R. Rakhimov; Nikolas P. Benetis; Anders Lund; Jimmy S. Hwang; Alexander I. Prokof'ev; Yakov S. Lebedev

doi:10.1016/0009-2614(96)00348-X

Intramolecular and reorientation dynamics of bis(triphenylphosphine)-3,6-di-tert-butyl-4,5-dimethoxy-o-semiquinone complex of copper(i) in viscous media

Rakhim R. Rakhimov^*, Nikolas P. Benetis, Anders Lund, Jimmy S. Hwang, Alexander I. Prokof'ev, Yakov S. Lebedev

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

9 Scopus citations

Abstract

Two simultaneous dynamical processes are studied in solutions of varying viscosity by using the EPR linewidth data of a Cu(I) o-semiquinone complex with two triphenylphosphine ligands (PPh₃), i.e. the overall reorientation (tumbling) of the complex and intramolecular exchange of the PPh₃ ligands in the coordination sphere of the complex. It is shown that for fast motion the line broadening of the hyperfine components is due to both modulation of the anisotropic magnetic parameters by rotational diffusion and to modulation of the isotropic part of the ³¹P hyperfine interaction by intramolecular exchange. The intramolecular dynamics of the coordination sphere appears to be dependent on the solvent dynamics.

Original language	English
Pages (from-to)	156-162
Number of pages	7
Journal	Chemical Physics Letters
Volume	255
Issue number	1-3
DOIs	https://doi.org/10.1016/0009-2614(96)00348-X
State	Published - 7 Jun 1996

Bibliographical note

Funding Information:
The authors gratefully acknowledge the financial support of the Bulgarian Science Found under the projects TH 1509/05 “Control of Mixed Culture Fermentations in Biochemical and Food Industries”.

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/0009-2614(96)00348-X

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@article{abb5f4ec66a6433990292d592f058e50,

title = "Intramolecular and reorientation dynamics of bis(triphenylphosphine)-3,6-di-tert-butyl-4,5-dimethoxy-o-semiquinone complex of copper(i) in viscous media",

abstract = "Two simultaneous dynamical processes are studied in solutions of varying viscosity by using the EPR linewidth data of a Cu(I) o-semiquinone complex with two triphenylphosphine ligands (PPh3), i.e. the overall reorientation (tumbling) of the complex and intramolecular exchange of the PPh3 ligands in the coordination sphere of the complex. It is shown that for fast motion the line broadening of the hyperfine components is due to both modulation of the anisotropic magnetic parameters by rotational diffusion and to modulation of the isotropic part of the 31P hyperfine interaction by intramolecular exchange. The intramolecular dynamics of the coordination sphere appears to be dependent on the solvent dynamics.",

author = "Rakhimov, \{Rakhim R.\} and Benetis, \{Nikolas P.\} and Anders Lund and Hwang, \{Jimmy S.\} and Prokof'ev, \{Alexander I.\} and Lebedev, \{Yakov S.\}",

note = "Funding Information: The authors gratefully acknowledge the financial support of the Bulgarian Science Found under the projects TH 1509/05 “Control of Mixed Culture Fermentations in Biochemical and Food Industries”.",

year = "1996",

month = jun,

day = "7",

doi = "10.1016/0009-2614(96)00348-X",

language = "English",

volume = "255",

pages = "156--162",

journal = "Chemical Physics Letters",

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TY - JOUR

T1 - Intramolecular and reorientation dynamics of bis(triphenylphosphine)-3,6-di-tert-butyl-4,5-dimethoxy-o-semiquinone complex of copper(i) in viscous media

AU - Rakhimov, Rakhim R.

AU - Benetis, Nikolas P.

AU - Lund, Anders

AU - Hwang, Jimmy S.

AU - Prokof'ev, Alexander I.

AU - Lebedev, Yakov S.

N1 - Funding Information: The authors gratefully acknowledge the financial support of the Bulgarian Science Found under the projects TH 1509/05 “Control of Mixed Culture Fermentations in Biochemical and Food Industries”.

PY - 1996/6/7

Y1 - 1996/6/7

N2 - Two simultaneous dynamical processes are studied in solutions of varying viscosity by using the EPR linewidth data of a Cu(I) o-semiquinone complex with two triphenylphosphine ligands (PPh3), i.e. the overall reorientation (tumbling) of the complex and intramolecular exchange of the PPh3 ligands in the coordination sphere of the complex. It is shown that for fast motion the line broadening of the hyperfine components is due to both modulation of the anisotropic magnetic parameters by rotational diffusion and to modulation of the isotropic part of the 31P hyperfine interaction by intramolecular exchange. The intramolecular dynamics of the coordination sphere appears to be dependent on the solvent dynamics.

AB - Two simultaneous dynamical processes are studied in solutions of varying viscosity by using the EPR linewidth data of a Cu(I) o-semiquinone complex with two triphenylphosphine ligands (PPh3), i.e. the overall reorientation (tumbling) of the complex and intramolecular exchange of the PPh3 ligands in the coordination sphere of the complex. It is shown that for fast motion the line broadening of the hyperfine components is due to both modulation of the anisotropic magnetic parameters by rotational diffusion and to modulation of the isotropic part of the 31P hyperfine interaction by intramolecular exchange. The intramolecular dynamics of the coordination sphere appears to be dependent on the solvent dynamics.

UR - https://www.scopus.com/pages/publications/0030573447

U2 - 10.1016/0009-2614(96)00348-X

DO - 10.1016/0009-2614(96)00348-X

M3 - Article

AN - SCOPUS:0030573447

SN - 0009-2614

VL - 255

SP - 156

EP - 162

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Intramolecular and reorientation dynamics of bis(triphenylphosphine)-3,6-di-tert-butyl-4,5-dimethoxy-o-semiquinone complex of copper(i) in viscous media

Abstract

Bibliographical note

ASJC Scopus subject areas

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