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Hierarchical Spin-Crossover Cooperativity in Hybrid 1D Chains of FeII -1,2,4-Triazole Trimers Linked by [Au(CN)2 ]- Bridges.
Ezzedinloo, Lida; Zenere, Katrina A; Xie, Zixi; Ahmed, Manan; Scottwell, SynØve; Bhadbhade, Mohan; Brand, Helen E A; Clegg, Jack K; Hua, Carol; Sciortino, Natasha F; Parker, Lachlan C; Powell, Benjamin J; Kepert, Cameron J; Neville, Suzanne M.
Affiliation
  • Ezzedinloo L; The School of Chemistry, The University of New South Wales, Sydney, 2052, Australia.
  • Zenere KA; The School of Chemistry, The University of Sydney, Sydney 2006, Australia.
  • Xie Z; The School of Chemistry, The University of New South Wales, Sydney, 2052, Australia.
  • Ahmed M; The School of Chemistry, The University of New South Wales, Sydney, 2052, Australia.
  • Scottwell S; The School of Chemistry, The University of New South Wales, Sydney, 2052, Australia.
  • Bhadbhade M; Mark Wainwright Analytical Centre, The University of New South Wales, Sydney 2052, Australia.
  • Brand HEA; Australian Synchrotron, ANSTO Clayton, Victoria, 3800, Australia.
  • Clegg JK; School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, 4072, Australia.
  • Hua C; School of Chemistry, The University of Melbourne, Parkville, 3010, Australia.
  • Sciortino NF; The School of Chemistry, The University of Sydney, Sydney 2006, Australia.
  • Parker LC; School of Mathematics and Physics, The University of Queensland, St Lucia, 4072, Australia.
  • Powell BJ; School of Mathematics and Physics, The University of Queensland, St Lucia, 4072, Australia.
  • Kepert CJ; The School of Chemistry, The University of Sydney, Sydney 2006, Australia.
  • Neville SM; The School of Chemistry, The University of New South Wales, Sydney, 2052, Australia.
Chemistry ; 27(16): 5136-5141, 2021 Mar 17.
Article in En | MEDLINE | ID: mdl-33543525
Foremost, practical applications of spin-crossover (SCO) materials require control of the nature of the spin-state coupling. In existing SCO materials, there is a single, well-defined dimensionality relevant to the switching behavior. A new material, consisting of 1,2,4-triazole-based trimers coordinated into 1D chains by [Au(CN)2 ]- and spaced by anions and exchangeable guests, underwent SCO defined by elastic coupling across multiple dimensional hierarchies. Detailed structural, vibrational, and theoretical studies conclusively confirmed that intra-trimer coupling was an order of magnitude greater than the intramolecular coupling, which was an order of magnitude greater than intermolecular coupling. As such, a clear hierarchy on the nature of elastic coupling in SCO materials was ascertained for the first time, which is a necessary step for the technological development of molecular switching materials.
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Full text: 1 Database: MEDLINE Language: En Journal: Chemistry Journal subject: QUIMICA Year: 2021 Type: Article Affiliation country: Australia
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Full text: 1 Database: MEDLINE Language: En Journal: Chemistry Journal subject: QUIMICA Year: 2021 Type: Article Affiliation country: Australia