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UID:69e0d6fe9687f
DTSTAMP:20260416T083302
DTSTART:20131015T113000
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20131015T130000
URL:https://murmitoyen.com/events/vanille/udem/detail/181283
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:Conférence de la Professeure Sally Brooker (Otago)
DESCRIPTION:Titre : Hysteretic spin crossover complexes and macrocyclic sin
 gle-molecule magnets.La conférence sera prononcée par la professeure Sal
 ly Brooker du Département de chimie de l'University of Otago (Nouvelle-Z
 élande). Elle sera donnée en anglais. Résumé : Our interests in spin 
 crossover (SCO) started when we identified that a dicobalt complex of a [2
 +2] Schiff-base macrocycle based on 3\,6-diformylpyridazine\, L\, [CoII2L(
 NCS)2(SCN)2]\, had unique SCO behaviour. Our focus in the area of SCO then
  moved on to the formation of related triazole-based complexes of iron(II)
 . The first iron complex we prepared\, [FeII2(PMAT)2](BF4)4•DMF\, utilis
 ed a bis-terdentate triazole ligand\, PMAT\, and led to the first structur
 al characterization of a mixed spin state dimetallic complex. More recentl
 y we have also started exploring the controlled preparation of Single-Mole
 cule Magnets (SMMs). Inspired by the [3+3] macrocycles described by Nabesh
 ima and MacLachlan\, we have prepared M3Ln SMMs using Schiff-base macrocyc
 les such as (LPr)6- with approximate 3-fold symmetry. This lecture will de
 scribe our recent results in the SCO and SMM fields. It will focus on self
 -assembling systems featuring transition metal complexes of (a) related tr
 iazole-based ligands\, (b) new pyrazine-based ligands for SCO and (c) a ne
 w class of macrocyclic 3d-4f SMMs.Information supplémentaire
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