Discrete FeII spin-crossover complexes of 2,2′-dipyridylamino-substituted s-triazine ligands with phenoxo, cyanophenoxo and dibenzylamino functionalities

Hayley S Scott, Tamsyn Maree Ross, Wasinee Phonsri, Boujemaa Moubaraki, Guillaume Chastanet, Jean-Francois Letard, Stuart Robert Batten, Keith Spencer Murray

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

Four 2,2′-dipyridylamino-s-triazine-substituted ligands, each of which incorporate different aromatic substituents (phenoxo, 4-CN-phenoxo and benzylamino) with different degrees of bulk and flexibility, have been formed and incorporated into a number of mononuclear FeII complexes of type trans-[FeII(L)2(NCX)2]·solvent (in which X = S, Se and BH3). These ligands were designed to promote π-π stacking between complexes. The complexes reported have been comprehensively characterised using single-crystal diffraction techniques in combination with magnetic susceptibility measurements. Light-induced excited spin-state trapping (LIESST) measurements have been performed on selected complexes. Light irradiation has shown the occurrence of a reversible photoswitching process at low temperature. New mononuclear spin-crossover compounds of type trans-[FeII(NCX)2(L)2]·solvent have been synthesised and structurally characterised. The L ligands are chelated to Fe by dipyridylamine groups and have aromatic substituents on the central triazine ring that influence cooperativity effects monitored by magnetic and light-induced excited-state spin trapping (LIESST) measurements.

Original languageEnglish
Pages (from-to)763-777
Number of pages15
JournalEuropean Journal of Inorganic Chemistry
Volume2015
Issue number5
DOIs
Publication statusPublished - 2015

Keywords

  • Cooperative phenomena
  • Iron
  • Magnetic properties
  • Spin crossover
  • Structure elucidation

Cite this

Scott, Hayley S ; Ross, Tamsyn Maree ; Phonsri, Wasinee ; Moubaraki, Boujemaa ; Chastanet, Guillaume ; Letard, Jean-Francois ; Batten, Stuart Robert ; Murray, Keith Spencer. / Discrete FeII spin-crossover complexes of 2,2′-dipyridylamino-substituted s-triazine ligands with phenoxo, cyanophenoxo and dibenzylamino functionalities. In: European Journal of Inorganic Chemistry. 2015 ; Vol. 2015, No. 5. pp. 763-777.
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abstract = "Four 2,2′-dipyridylamino-s-triazine-substituted ligands, each of which incorporate different aromatic substituents (phenoxo, 4-CN-phenoxo and benzylamino) with different degrees of bulk and flexibility, have been formed and incorporated into a number of mononuclear FeII complexes of type trans-[FeII(L)2(NCX)2]·solvent (in which X = S, Se and BH3). These ligands were designed to promote π-π stacking between complexes. The complexes reported have been comprehensively characterised using single-crystal diffraction techniques in combination with magnetic susceptibility measurements. Light-induced excited spin-state trapping (LIESST) measurements have been performed on selected complexes. Light irradiation has shown the occurrence of a reversible photoswitching process at low temperature. New mononuclear spin-crossover compounds of type trans-[FeII(NCX)2(L)2]·solvent have been synthesised and structurally characterised. The L ligands are chelated to Fe by dipyridylamine groups and have aromatic substituents on the central triazine ring that influence cooperativity effects monitored by magnetic and light-induced excited-state spin trapping (LIESST) measurements.",
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Discrete FeII spin-crossover complexes of 2,2′-dipyridylamino-substituted s-triazine ligands with phenoxo, cyanophenoxo and dibenzylamino functionalities. / Scott, Hayley S; Ross, Tamsyn Maree; Phonsri, Wasinee; Moubaraki, Boujemaa; Chastanet, Guillaume; Letard, Jean-Francois; Batten, Stuart Robert; Murray, Keith Spencer.

In: European Journal of Inorganic Chemistry, Vol. 2015, No. 5, 2015, p. 763-777.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Discrete FeII spin-crossover complexes of 2,2′-dipyridylamino-substituted s-triazine ligands with phenoxo, cyanophenoxo and dibenzylamino functionalities

AU - Scott, Hayley S

AU - Ross, Tamsyn Maree

AU - Phonsri, Wasinee

AU - Moubaraki, Boujemaa

AU - Chastanet, Guillaume

AU - Letard, Jean-Francois

AU - Batten, Stuart Robert

AU - Murray, Keith Spencer

PY - 2015

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N2 - Four 2,2′-dipyridylamino-s-triazine-substituted ligands, each of which incorporate different aromatic substituents (phenoxo, 4-CN-phenoxo and benzylamino) with different degrees of bulk and flexibility, have been formed and incorporated into a number of mononuclear FeII complexes of type trans-[FeII(L)2(NCX)2]·solvent (in which X = S, Se and BH3). These ligands were designed to promote π-π stacking between complexes. The complexes reported have been comprehensively characterised using single-crystal diffraction techniques in combination with magnetic susceptibility measurements. Light-induced excited spin-state trapping (LIESST) measurements have been performed on selected complexes. Light irradiation has shown the occurrence of a reversible photoswitching process at low temperature. New mononuclear spin-crossover compounds of type trans-[FeII(NCX)2(L)2]·solvent have been synthesised and structurally characterised. The L ligands are chelated to Fe by dipyridylamine groups and have aromatic substituents on the central triazine ring that influence cooperativity effects monitored by magnetic and light-induced excited-state spin trapping (LIESST) measurements.

AB - Four 2,2′-dipyridylamino-s-triazine-substituted ligands, each of which incorporate different aromatic substituents (phenoxo, 4-CN-phenoxo and benzylamino) with different degrees of bulk and flexibility, have been formed and incorporated into a number of mononuclear FeII complexes of type trans-[FeII(L)2(NCX)2]·solvent (in which X = S, Se and BH3). These ligands were designed to promote π-π stacking between complexes. The complexes reported have been comprehensively characterised using single-crystal diffraction techniques in combination with magnetic susceptibility measurements. Light-induced excited spin-state trapping (LIESST) measurements have been performed on selected complexes. Light irradiation has shown the occurrence of a reversible photoswitching process at low temperature. New mononuclear spin-crossover compounds of type trans-[FeII(NCX)2(L)2]·solvent have been synthesised and structurally characterised. The L ligands are chelated to Fe by dipyridylamine groups and have aromatic substituents on the central triazine ring that influence cooperativity effects monitored by magnetic and light-induced excited-state spin trapping (LIESST) measurements.

KW - Cooperative phenomena

KW - Iron

KW - Magnetic properties

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