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Thermal spin crossover behaviour of two-dimensional Hofmann-type coordination polymers incorporating photoactive ligands

hal.structure.identifierSchool of Chemistry
dc.contributor.authorRAGON, Florence
hal.structure.identifierSchool of Chemistry
dc.contributor.authorYAKSI, Korcan
hal.structure.identifierSchool of Chemistry
dc.contributor.authorSCIORTINO, Natasha F.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHASTANET, Guillaume
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLÉTARD, Jean-Francois
hal.structure.identifierSchool of Chemistry
dc.contributor.authorD’ALESSANDRO, Deanna M.
hal.structure.identifierSchool of Chemistry
dc.contributor.authorKEPERT, Cameron J.
hal.structure.identifierSchool of Chemistry
dc.contributor.authorNEVILLE, Suzanne M.
dc.date.issued2014
dc.identifier.issn0004-9425
dc.description.abstractEnTwo spin crossover (SCO)-active 2D Hofmann-type framework materials, [Fe(3-PAP)2Pd(CN)4] (A) and [Fe(4-PAP)2Pd(CN)4] (B) containing the photoactive azo-benzene-type ligands 3-phenylazo-pyridine (3-PAP) and 4-phenylazo-pyridine (4-PAP) were prepared. These materials form non-porous Hofmann-type structures whereby 2D [FeIIPd(CN)4] grids are separated by 3- or 4-PAP ligands. The iron(ii) sites of both materials (A and B) undergo abrupt and hysteretic spin transitions with characteristic transition temperatures T1/2↓,↑: 178, 190 K (ΔT: 12 K) and T1/2↓,↑: 233, 250 K (ΔT: 17 K), respectively. Photo-magnetic characterisations reveal light-induced excited spin state trapping (LIESST) activity in both A and B with characteristic T(LIESST) values of 45 and 40 K. Although both free ligands show trans- to-cis isomerisation in solution under UV-irradiation, as evidenced via absorption spectroscopy, such photo-activity was not observed in the ligands or complexes A and B in the solid state. Structural analysis of a further non-SCO active isomer to B, [Fe(4-PAP)2Pd(CN)4]·1/2(4-PAP) (B·(4-PAP)), which contains free ligand in the pore space is reported.
dc.language.isoen
dc.publisherCSIRO Publishing
dc.title.enThermal spin crossover behaviour of two-dimensional Hofmann-type coordination polymers incorporating photoactive ligands
dc.typeArticle de revue
dc.identifier.doi10.1071/CH14188
dc.subject.halChimie/Chimie de coordination
dc.subject.halChimie/Cristallographie
dc.subject.halChimie/Polymères
bordeaux.journalAustralian Journal of Chemistry
bordeaux.page1563-1573
bordeaux.volume67
bordeaux.issue11
bordeaux.peerReviewedoui
hal.identifierhal-01086433
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01086433v1
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