A new 3-D polymeric spin transition compound: [tris(1,4-bis-(tetrazol-1-yl) butane-N1,N1′)iron(II)] bis(perchlorate)

Petra J. van Koningsbruggen; Yann Garcia; Huub Kooijman; Anthony L. Spek; Jaap G. Haasnoot; Olivier Kahn; Jorge Linares; Epiphane Codjovi; François Varret

doi:10.1039/b008073j

A new 3-D polymeric spin transition compound: [tris(1,4-bis-(tetrazol-1-yl) butane-N1,N1′)iron(II)] bis(perchlorate)

Petra J. van Koningsbruggen, Yann Garcia, Huub Kooijman, Anthony L. Spek, Jaap G. Haasnoot, Olivier Kahn, Jorge Linares, Epiphane Codjovi, François Varret

Chemical Engineering & Applied Chemistry

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

Abstract

A series of novel polymeric compounds of formula [M(btzb)₃][ClO₄]₂ (M^ll = Fe, Ni or Cu) with btzb = 1,4-bis-(tetrazol-1-yl)butane have been prepared and their physical properties investigated. The btzb ligand has been prepared and its crystal structure determined, together with a tentative crystal structure of the 3-D compound [Fe(btzb)₃][ClO₄]₂. The model of the latter shows two symmetry-related, interpenetrating Fe-btzb networks in which the iron(II) ions approach each other as close as 8.3 and 9.1 Å. This supramolecular catenane undergoes a sharp thermal spin transition around 160 K with hysteresis (20 K) along with a pronounced thermochromic effect. The spin crossover behaviour has been followed by magnetic, DSC, optical spectroscopy and ⁵⁷Fe Mössbauer spectroscopy measurements. Irradiation with green light at low temperature leads to population of the metastable high-spin state for the thermally active iron(_ll) ions. The nature of the spin crossover behaviour has been discussed in detail.

Original language	English
Pages (from-to)	466-471
Number of pages	6
Journal	Dalton Transactions
Issue number	4
DOIs	https://doi.org/10.1039/b008073j
Publication status	Published - 29 Jan 2001

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@article{c0f663cb839d48debef39c1bb23573b2,

title = "A new 3-D polymeric spin transition compound: [tris(1,4-bis-(tetrazol-1-yl) butane-N1,N1′)iron(II)] bis(perchlorate)",

abstract = "A series of novel polymeric compounds of formula [M(btzb)3][ClO4]2 (Mll = Fe, Ni or Cu) with btzb = 1,4-bis-(tetrazol-1-yl)butane have been prepared and their physical properties investigated. The btzb ligand has been prepared and its crystal structure determined, together with a tentative crystal structure of the 3-D compound [Fe(btzb)3][ClO4]2. The model of the latter shows two symmetry-related, interpenetrating Fe-btzb networks in which the iron(II) ions approach each other as close as 8.3 and 9.1 {\AA}. This supramolecular catenane undergoes a sharp thermal spin transition around 160 K with hysteresis (20 K) along with a pronounced thermochromic effect. The spin crossover behaviour has been followed by magnetic, DSC, optical spectroscopy and 57Fe M{\"o}ssbauer spectroscopy measurements. Irradiation with green light at low temperature leads to population of the metastable high-spin state for the thermally active iron(ll) ions. The nature of the spin crossover behaviour has been discussed in detail.",

author = "{van Koningsbruggen}, {Petra J.} and Yann Garcia and Huub Kooijman and Spek, {Anthony L.} and Haasnoot, {Jaap G.} and Olivier Kahn and Jorge Linares and Epiphane Codjovi and Fran{\c c}ois Varret",

year = "2001",

month = jan,

day = "29",

doi = "10.1039/b008073j",

language = "English",

pages = "466--471",

journal = "Dalton Transactions",

issn = "1470-479X",

publisher = "Royal Society of Chemistry",

number = "4",

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TY - JOUR

T1 - A new 3-D polymeric spin transition compound: [tris(1,4-bis-(tetrazol-1-yl) butane-N1,N1′)iron(II)] bis(perchlorate)

AU - van Koningsbruggen, Petra J.

AU - Garcia, Yann

AU - Kooijman, Huub

AU - Spek, Anthony L.

AU - Haasnoot, Jaap G.

AU - Kahn, Olivier

AU - Linares, Jorge

AU - Codjovi, Epiphane

AU - Varret, François

PY - 2001/1/29

Y1 - 2001/1/29

N2 - A series of novel polymeric compounds of formula [M(btzb)3][ClO4]2 (Mll = Fe, Ni or Cu) with btzb = 1,4-bis-(tetrazol-1-yl)butane have been prepared and their physical properties investigated. The btzb ligand has been prepared and its crystal structure determined, together with a tentative crystal structure of the 3-D compound [Fe(btzb)3][ClO4]2. The model of the latter shows two symmetry-related, interpenetrating Fe-btzb networks in which the iron(II) ions approach each other as close as 8.3 and 9.1 Å. This supramolecular catenane undergoes a sharp thermal spin transition around 160 K with hysteresis (20 K) along with a pronounced thermochromic effect. The spin crossover behaviour has been followed by magnetic, DSC, optical spectroscopy and 57Fe Mössbauer spectroscopy measurements. Irradiation with green light at low temperature leads to population of the metastable high-spin state for the thermally active iron(ll) ions. The nature of the spin crossover behaviour has been discussed in detail.

AB - A series of novel polymeric compounds of formula [M(btzb)3][ClO4]2 (Mll = Fe, Ni or Cu) with btzb = 1,4-bis-(tetrazol-1-yl)butane have been prepared and their physical properties investigated. The btzb ligand has been prepared and its crystal structure determined, together with a tentative crystal structure of the 3-D compound [Fe(btzb)3][ClO4]2. The model of the latter shows two symmetry-related, interpenetrating Fe-btzb networks in which the iron(II) ions approach each other as close as 8.3 and 9.1 Å. This supramolecular catenane undergoes a sharp thermal spin transition around 160 K with hysteresis (20 K) along with a pronounced thermochromic effect. The spin crossover behaviour has been followed by magnetic, DSC, optical spectroscopy and 57Fe Mössbauer spectroscopy measurements. Irradiation with green light at low temperature leads to population of the metastable high-spin state for the thermally active iron(ll) ions. The nature of the spin crossover behaviour has been discussed in detail.

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IS - 4

ER -

A new 3-D polymeric spin transition compound: [tris(1,4-bis-(tetrazol-1-yl) butane-N1,N1′)iron(II)] bis(perchlorate)

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