On the Possibility of Magneto-Structural Correlations: Detailed Studies of Dinickel Carboxylate Complexes

James P. S. Walsh; Stephen Sproules; Nicholas F. Chilton; Anne-Laure Barra; Grigore A. Timco; David Collison; Eric J. L. McInnes; Richard E. P. Winpenny

doi:10.1021/ic501036h

On the Possibility of Magneto-Structural Correlations: Detailed Studies of Dinickel Carboxylate Complexes

James P. S. Walsh, Stephen Sproules, Nicholas F. Chilton, Anne-Laure Barra, Grigore A. Timco, David Collison, Eric J. L. McInnes, Richard E. P. Winpenny

Research School of Chemistry

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

33 Citations (Scopus)

Abstract

A series of water-bridged dinickel complexes of the general formula [Ni2(μ2-OH2)(μ2-O2CtBu)2(O2CtBu)2(L)(L′)] (L = HO2CtBu, L′ = HO2CtBu (1), pyridine (2), 3-methylpyridine (4); L = L′ = pyridine (3), 3-methylpyridine (5)) has been synthesized and structurally characterized by X-ray crystallography. The magnetic properties have been probed by magnetometry and EPR spectroscopy, and detailed measurements show that the axial zero-field splitting, D, of the nickel(II) ions is on the same order as the isotropic exchange interaction, J, between the nickel sites. The isotropic exchange interaction can be related to the angle between the nickel centers and the bridging water molecule, while the magnitude of D can be related to the coordination sphere at the nickel sites.

Original language	English
Pages (from-to)	8464-8472
Number of pages	9
Journal	Inorganic Chemistry
Volume	53
Issue number	16
DOIs	https://doi.org/10.1021/ic501036h
Publication status	Published - 18 Aug 2014

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https://pubs.acs.org/doi/10.1021/ic501036h

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title = "On the Possibility of Magneto-Structural Correlations: Detailed Studies of Dinickel Carboxylate Complexes",

abstract = "A series of water-bridged dinickel complexes of the general formula [Ni2(μ2-OH2)(μ2-O2CtBu)2(O2CtBu)2(L)(L′)] (L = HO2CtBu, L′ = HO2CtBu (1), pyridine (2), 3-methylpyridine (4); L = L′ = pyridine (3), 3-methylpyridine (5)) has been synthesized and structurally characterized by X-ray crystallography. The magnetic properties have been probed by magnetometry and EPR spectroscopy, and detailed measurements show that the axial zero-field splitting, D, of the nickel(II) ions is on the same order as the isotropic exchange interaction, J, between the nickel sites. The isotropic exchange interaction can be related to the angle between the nickel centers and the bridging water molecule, while the magnitude of D can be related to the coordination sphere at the nickel sites.",

author = "Walsh, {James P. S.} and Stephen Sproules and Chilton, {Nicholas F.} and Anne-Laure Barra and Timco, {Grigore A.} and David Collison and McInnes, {Eric J. L.} and Winpenny, {Richard E. P.}",

year = "2014",

month = aug,

day = "18",

doi = "10.1021/ic501036h",

language = "English",

volume = "53",

pages = "8464--8472",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

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T1 - On the Possibility of Magneto-Structural Correlations: Detailed Studies of Dinickel Carboxylate Complexes

AU - Walsh, James P. S.

AU - Sproules, Stephen

AU - Chilton, Nicholas F.

AU - Barra, Anne-Laure

AU - Timco, Grigore A.

AU - Collison, David

AU - McInnes, Eric J. L.

AU - Winpenny, Richard E. P.

PY - 2014/8/18

Y1 - 2014/8/18

N2 - A series of water-bridged dinickel complexes of the general formula [Ni2(μ2-OH2)(μ2-O2CtBu)2(O2CtBu)2(L)(L′)] (L = HO2CtBu, L′ = HO2CtBu (1), pyridine (2), 3-methylpyridine (4); L = L′ = pyridine (3), 3-methylpyridine (5)) has been synthesized and structurally characterized by X-ray crystallography. The magnetic properties have been probed by magnetometry and EPR spectroscopy, and detailed measurements show that the axial zero-field splitting, D, of the nickel(II) ions is on the same order as the isotropic exchange interaction, J, between the nickel sites. The isotropic exchange interaction can be related to the angle between the nickel centers and the bridging water molecule, while the magnitude of D can be related to the coordination sphere at the nickel sites.

AB - A series of water-bridged dinickel complexes of the general formula [Ni2(μ2-OH2)(μ2-O2CtBu)2(O2CtBu)2(L)(L′)] (L = HO2CtBu, L′ = HO2CtBu (1), pyridine (2), 3-methylpyridine (4); L = L′ = pyridine (3), 3-methylpyridine (5)) has been synthesized and structurally characterized by X-ray crystallography. The magnetic properties have been probed by magnetometry and EPR spectroscopy, and detailed measurements show that the axial zero-field splitting, D, of the nickel(II) ions is on the same order as the isotropic exchange interaction, J, between the nickel sites. The isotropic exchange interaction can be related to the angle between the nickel centers and the bridging water molecule, while the magnitude of D can be related to the coordination sphere at the nickel sites.

U2 - 10.1021/ic501036h

DO - 10.1021/ic501036h

M3 - Article

SN - 0020-1669

VL - 53

SP - 8464

EP - 8472

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 16

ER -

On the Possibility of Magneto-Structural Correlations: Detailed Studies of Dinickel Carboxylate Complexes

Abstract

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