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Dive into the research topics where Stephen M. Holmes is active.

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Featured researches published by Stephen M. Holmes.


Angewandte Chemie | 2010

Reversible Thermally and Photoinduced Electron Transfer in a Cyano‐Bridged {Fe2Co2} Square Complex

Yuan-Zhu Zhang; Dongfeng Li; Rodolphe Clérac; Marguerite Kalisz; Corine Mathonière; Stephen M. Holmes

Flip to be square: Structural, spectroscopic, magnetic, and photomagnetic studies conclusively demonstrate that a tetranuclear cyanometalate {Fe2Co2} complex undergoes reversible thermally and light-induced changes in optical and magnetic properties. This instability is induced by an intramolecular electron transfer, as oberved in three-dimensional Co/Fe Prussian blue compounds (see picture).


Chemistry: A European Journal | 2011

Controlling thermally induced electron transfer in cyano-bridged molecular squares: from solid state to solution.

Diana Siretanu; Dongfeng Li; L. Buisson; Dario M. Bassani; Stephen M. Holmes; Corine Mathonière; Rodolphe Clérac

A new cyano-based {Fe 2 Co 2 } complex has been synthesized, and its optical and magnetic properties described in the frame of an intramolecular electron transfer. Due to methyl functionalization of the ligand, which gives good solubility to this complex, its thermally induced switchable behavior has been transferred to solution and finely tuned over a broad temperature range by adjusting the solvent composition and polarity.


Inorganic Chemistry | 2011

Pyrazolylborates and Their Importance in Tuning Single-Molecule Magnet Properties of {FeIII2NiII} Complexes

Yuan-Zhu Zhang; Uma Prasad Mallik; Nigam P. Rath; Rodolphe Clérac; Stephen M. Holmes

A new tricyanoferrate(III) building block and a trinuclear single-molecule magnet derivative are described. The treatment of a 2:1 ratio of [NEt(4)][(Tp*(Bn))Fe(III)(CN)(3)]·H(2)O·MeOH [1; Tp*(Bn) = tris(3,5-dimethyl-4-benzyl)pyrazolylborate] with nickel(II) trifluoromethanesulfonate gives {[(Tp*(Bn))Fe(III)(CN)(3)](2)[Ni(II)(DMF)(4)]}·2DMF (2; DMF = N,N-dimethylformamide). The symmetry-equivalent Fe(III)(LS) ions lead to a favorable alignment of anisotropy tensors (i.e., Fe···B axes) in 2, and an energy barrier of Δ(eff)/k(B) = 16.7 K is found for the S(T) = 2 complex.


Journal of Materials Chemistry C | 2015

Spin-state switches in molecular materials chemistry

Shinya Hayami; Stephen M. Holmes; Malcolm A. Halcrow

[email protected] https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher’s website.


Chemical Communications | 2010

A cyano-based octanuclear {FeIII4NiII4} single-molecule magnet

Yuan-Zhu Zhang; Uma Prasad Mallik; Nigam P. Rath; Gordon T. Yee; Rodolphe Clérac; Stephen M. Holmes


Chemical Communications | 2011

Irreversible solvent-driven conversion in cyanometalate {Fe2Ni}n (n = 2, 3) single-molecule magnets

Yuan-Zhu Zhang; Uma Prasad Mallik; Rodolphe Clérac; Nigam P. Rath; Stephen M. Holmes


Polyhedron | 2013

Structure–property trends in cyanido-bridged tetranuclear FeIII/NiII single-molecule magnets

Yuan-Zhu Zhang; Uma Prasad Mallik; Rodolphe Clérac; Nigam P. Rath; Stephen M. Holmes


Polyhedron | 2013

Reprint of “A cyanido-bridged trinuclear {FeIII2NiII} complex decorated with organic radicals” ☆

Yuan-Zhu Zhang; Dong-Feng Li; Rodolphe Clérac; Stephen M. Holmes


Journal of Chemical Education | 2017

Simultaneous Introduction of Redox and Coordination Chemistry Concepts in a Single Laboratory Experiment

Philip J. Ferko; Jeffrey R. Withers; Hung Nguyen; Joshua Ema; Tim Ema; Charles Allison; Christian Dornhoefer; Nigam P. Rath; Stephen M. Holmes


Polyhedron | 2013

A cyanido-bridged trinuclear {FeIII2NiII} complex decorated with organic radicals

Yuan-Zhu Zhang; Dong-Feng Li; Rodolphe Clérac; Stephen M. Holmes

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Yuan-Zhu Zhang

University of Missouri–St. Louis

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Rodolphe Clérac

Centre national de la recherche scientifique

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Nigam P. Rath

University of Missouri–St. Louis

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Uma Prasad Mallik

University of Missouri–St. Louis

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Hung Nguyen

University of Missouri–St. Louis

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Charles Allison

University of Missouri–St. Louis

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Dongfeng Li

University of Kentucky

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Jeffrey R. Withers

University of Missouri–St. Louis

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Stephen Hill

Florida State University

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