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Publication
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| Title of Article |
Subtlety of the spin-crossover phenomenon observed with dipyridylamino-substituted triazine ligands |
| Date of Acceptance |
2 October 2012 |
| Journal |
| Title of Journal |
European Journal of Inorganic Chemistry |
| Standard |
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| Institute of Journal |
Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim |
| ISBN/ISSN |
- |
| Volume |
- |
| Issue |
Issue 5-6 |
| Month |
February |
| Year of Publication |
2013 |
| Page |
730-737 |
| Abstract |
Reactions of the new, closely related ligands 4,6-dichloro- N,N-di(pyridine-2-yl)-1,3,5-triazine-amine (Cldpat) and 6- chloro-N'-phenyl-N,N- di(pyridin-2-yl)-1,3,5-triazine-2,4-diamine (Cladpat) with iron(II) thiocyanate produced coordination compounds with drastically distinct magnetic properties. The compound trans-[Fe(Cldpat)2(NCS)2](H2O) (1) is a highspin complex from room temperature down to 5 K whereas the analogous compound trans-[Fe(Cladpat) 2 (NCS) 2] (2) exhibits spin-crossover (SCO) properties with T1/2 = 178K. Compounds 1 and 2 (both in its low-spin and high-spin states) have been structurally characterized by X-ray diffraction studies, which revealed identical metal coordination spheres. The SCO properties of 2 have been thoroughly investigated by temperature-dependent magnetic susceptibility measurements and differential scanning calorimetry (DSC), and a LIESST process with rapid relaxation of the trapped HS species has been observed. The equivalent coordination compound with selenocyanate anions, namely [Fe(Cladpat) 2 (NCSe) 2] (3) also displays SCO properties, although more gradual and with a lower T 1/2 value of 166 K. |
| Keyword |
Calorimetry; Iron; LIESST effect; Spin crossover; Supramolecular interactions |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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