The influence of NCE- (E = S, Se, BH3) ligands on the temperature of spin crossover in a family of iron(II) mononuclear complexes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73587990" target="_blank" >RIV/61989592:15310/18:73587990 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/content/articlepdf/2018/qi/c8qi00303c" target="_blank" >https://pubs.rsc.org/en/content/articlepdf/2018/qi/c8qi00303c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c8qi00303c" target="_blank" >10.1039/c8qi00303c</a>

Result language
angličtina
Original language name
The influence of NCE- (E = S, Se, BH3) ligands on the temperature of spin crossover in a family of iron(II) mononuclear complexes
Original language description
A precise regulation of the temperature of spin crossover (SCO) is an essential task to envisage practical applications of switchable materials. Here, we present three isostructural complexes with the formula [Fe(L-Cl)(NCE)(2)], where L-Cl is the tetradentate ligand N,N-bis[(4-chloro-2-pyridyl)methyl]ethane-1,2-diamine and E = S (1-S), Se (1-Se), and BH3 (1-BH3). Single-crystal X-ray diffraction, magnetic measurements, Mossbauer spectroscopy and DSC measurements have been carried out to study their SCO properties. 1-S remains in a high spin state over all temperatures due to the weak ligand field strength imposed by NCS- ligands. The replacement of NCS- by NCSe- allows the occurrence of SCO around 177 K. Using NCBH3- instead allows a further increase of the conversion temperature (T-1/2) by ca. 30 K. A literature survey of complexes containing NCE- ligands was carried out to examine their influence on the SCO properties. A 50-90 K difference in T-1/2 was found between NCS- and NCSe- derivatives and a 30-50 K difference was found between NCSe- and NCBH3- derivatives.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry

Project
<a href="/en/project/LO1305" target="_blank" >LO1305: Development of the center of advanced technologies and materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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