Cooperative spin transition in a 1D-polymeric complex [Fe(4-ethyl-1,2,4-triazole)3]SiF6·nH2O

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Cooperative spin transition in a 1D-polymeric complex [Fe(4-ethyl-1,2,4-triazole)₃]SiF₆·nH₂O. / Vinogradova, Katerina A.; Pishchur, Denis P.; Komarov, Vladislav Y. et al.

In: Inorganica Chimica Acta, Vol. 506, 119560, 01.06.2020.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{23d00bd0391f4eab8aa202337966b76c,

title = "Cooperative spin transition in a 1D-polymeric complex [Fe(4-ethyl-1,2,4-triazole)3]SiF6·nH2O",

abstract = "A new 1D-polymeric iron(II)-1,2,4-triazole complex, [Fe(EtTrz)3]SiF6·nH2O (EtTrz = 4-ethyl-1,2,4-triazole, n = 1, 0), demonstrates cooperative spin transition above room temperature. Under vacuum the complex loses its water molecules and shows an abrupt and reproducible spin transition with thermal hysteresis, Tc↑ ≈ 345 K, Tc↓ ≈ 328 K, ΔH ≈ 20 kJ mol−1, ΔS ≈ 57 J mol−1 K−1. In sealed ampoules the complex [Fe(EtTrz)3]SiF6·H2O shows the spin transition with a narrower hysteresis loop, Tc↑ ≈ 363 K, Tc↓ ≈ 353 K, ΔH ≈ 30 kJ mol−1, ΔS ≈ 85 J mol−1 K−1. A composite spin crossover material can be prepared by embedding the complex in the polymeric polystyrene matrix.",

keywords = "Cooperativity, Iron, Spin crossover, Triazole, 4-R-1,2,4-TRIAZOLES R, COMPOSITE, 1,2,4-TRIAZOLE, COORDINATION-COMPOUNDS, IRON(II) COMPLEXES, (1)A(1)-REVERSIBLE-ARROW-T-5(2), CROSSOVER, MAGNETIC-PROPERTIES, TRINUCLEAR, HTRZ=1,2,4-TRIAZOLE",

author = "Vinogradova, {Katerina A.} and Pishchur, {Denis P.} and Komarov, {Vladislav Y.} and Lavrenova, {Ludmila G.} and Bushuev, {Mark B.}",

year = "2020",

month = jun,

day = "1",

doi = "10.1016/j.ica.2020.119560",

language = "English",

volume = "506",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Cooperative spin transition in a 1D-polymeric complex [Fe(4-ethyl-1,2,4-triazole)3]SiF6·nH2O

AU - Vinogradova, Katerina A.

AU - Pishchur, Denis P.

AU - Komarov, Vladislav Y.

AU - Lavrenova, Ludmila G.

AU - Bushuev, Mark B.

PY - 2020/6/1

Y1 - 2020/6/1

N2 - A new 1D-polymeric iron(II)-1,2,4-triazole complex, [Fe(EtTrz)3]SiF6·nH2O (EtTrz = 4-ethyl-1,2,4-triazole, n = 1, 0), demonstrates cooperative spin transition above room temperature. Under vacuum the complex loses its water molecules and shows an abrupt and reproducible spin transition with thermal hysteresis, Tc↑ ≈ 345 K, Tc↓ ≈ 328 K, ΔH ≈ 20 kJ mol−1, ΔS ≈ 57 J mol−1 K−1. In sealed ampoules the complex [Fe(EtTrz)3]SiF6·H2O shows the spin transition with a narrower hysteresis loop, Tc↑ ≈ 363 K, Tc↓ ≈ 353 K, ΔH ≈ 30 kJ mol−1, ΔS ≈ 85 J mol−1 K−1. A composite spin crossover material can be prepared by embedding the complex in the polymeric polystyrene matrix.

AB - A new 1D-polymeric iron(II)-1,2,4-triazole complex, [Fe(EtTrz)3]SiF6·nH2O (EtTrz = 4-ethyl-1,2,4-triazole, n = 1, 0), demonstrates cooperative spin transition above room temperature. Under vacuum the complex loses its water molecules and shows an abrupt and reproducible spin transition with thermal hysteresis, Tc↑ ≈ 345 K, Tc↓ ≈ 328 K, ΔH ≈ 20 kJ mol−1, ΔS ≈ 57 J mol−1 K−1. In sealed ampoules the complex [Fe(EtTrz)3]SiF6·H2O shows the spin transition with a narrower hysteresis loop, Tc↑ ≈ 363 K, Tc↓ ≈ 353 K, ΔH ≈ 30 kJ mol−1, ΔS ≈ 85 J mol−1 K−1. A composite spin crossover material can be prepared by embedding the complex in the polymeric polystyrene matrix.

KW - Cooperativity

KW - Iron

KW - Spin crossover

KW - Triazole

KW - 4-R-1,2,4-TRIAZOLES R

KW - COMPOSITE

KW - 1,2,4-TRIAZOLE

KW - COORDINATION-COMPOUNDS

KW - IRON(II) COMPLEXES

KW - (1)A(1)-REVERSIBLE-ARROW-T-5(2)

KW - CROSSOVER

KW - MAGNETIC-PROPERTIES

KW - TRINUCLEAR

KW - HTRZ=1,2,4-TRIAZOLE

UR - http://www.scopus.com/inward/record.url?scp=85081000376&partnerID=8YFLogxK

U2 - 10.1016/j.ica.2020.119560

DO - 10.1016/j.ica.2020.119560

M3 - Article

AN - SCOPUS:85081000376

VL - 506

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

M1 - 119560

ER -

ID: 23738061