Temperature-dependent hysteretic two-step spin crossover in two-dimensional Hofmann-type compounds

Yue Li; Min Liu; Zi Shuo Yao; Jun Tao

doi:10.1039/d0dt00866d

Temperature-dependent hysteretic two-step spin crossover in two-dimensional Hofmann-type compounds

Yue Li, Min Liu^*, Zi Shuo Yao, Jun Tao

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

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

14 Citations (Scopus)

Abstract

Hofmann-type spin-crossover (SCO) frameworks attract much attention due to their predictable structures and diverse SCO behaviours. In this paper, we report two isostructural two-dimensional (2D) Hofmann-type SCO frameworks [Fe^II(ppe)₂M^II(CN)₄]·3H₂O (ppe = 1-(2-pyridyl)-2-(4-pyridyl)ethylene and M = Pd for1and Pt for2). X-ray crystallographic studies, magnetic measurements and Mössbauer spectra jointly reveal that both compounds undergo complete hysteretic two-step SCO,i.e.HS^1.0 HS^0.6-0.5LS^0.4-0.5? LS^1.0conversion with thermal hysteresis loops of 14 K and 28 K wide for1and 13 K and 26 K wide for2. The dehydrated samples,1-dehydrated and2-dehydrated, display different SCO behaviours, unveiling that the SCO behaviours are affected by guest water molecules.

Original language	English
Pages (from-to)	7245-7251
Number of pages	7
Journal	Dalton Transactions
Volume	49
Issue number	21
DOIs	https://doi.org/10.1039/d0dt00866d
Publication status	Published - 7 Jun 2020

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title = "Temperature-dependent hysteretic two-step spin crossover in two-dimensional Hofmann-type compounds",

abstract = "Hofmann-type spin-crossover (SCO) frameworks attract much attention due to their predictable structures and diverse SCO behaviours. In this paper, we report two isostructural two-dimensional (2D) Hofmann-type SCO frameworks [FeII(ppe)2MII(CN)4]·3H2O (ppe = 1-(2-pyridyl)-2-(4-pyridyl)ethylene and M = Pd for1and Pt for2). X-ray crystallographic studies, magnetic measurements and M{\"o}ssbauer spectra jointly reveal that both compounds undergo complete hysteretic two-step SCO,i.e.HS1.0 HS0.6-0.5LS0.4-0.5? LS1.0conversion with thermal hysteresis loops of 14 K and 28 K wide for1and 13 K and 26 K wide for2. The dehydrated samples,1-dehydrated and2-dehydrated, display different SCO behaviours, unveiling that the SCO behaviours are affected by guest water molecules.",

author = "Yue Li and Min Liu and Yao, {Zi Shuo} and Jun Tao",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2020.",

year = "2020",

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doi = "10.1039/d0dt00866d",

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T1 - Temperature-dependent hysteretic two-step spin crossover in two-dimensional Hofmann-type compounds

AU - Li, Yue

AU - Liu, Min

AU - Yao, Zi Shuo

AU - Tao, Jun

N1 - Publisher Copyright: © The Royal Society of Chemistry 2020.

PY - 2020/6/7

Y1 - 2020/6/7

N2 - Hofmann-type spin-crossover (SCO) frameworks attract much attention due to their predictable structures and diverse SCO behaviours. In this paper, we report two isostructural two-dimensional (2D) Hofmann-type SCO frameworks [FeII(ppe)2MII(CN)4]·3H2O (ppe = 1-(2-pyridyl)-2-(4-pyridyl)ethylene and M = Pd for1and Pt for2). X-ray crystallographic studies, magnetic measurements and Mössbauer spectra jointly reveal that both compounds undergo complete hysteretic two-step SCO,i.e.HS1.0 HS0.6-0.5LS0.4-0.5? LS1.0conversion with thermal hysteresis loops of 14 K and 28 K wide for1and 13 K and 26 K wide for2. The dehydrated samples,1-dehydrated and2-dehydrated, display different SCO behaviours, unveiling that the SCO behaviours are affected by guest water molecules.

AB - Hofmann-type spin-crossover (SCO) frameworks attract much attention due to their predictable structures and diverse SCO behaviours. In this paper, we report two isostructural two-dimensional (2D) Hofmann-type SCO frameworks [FeII(ppe)2MII(CN)4]·3H2O (ppe = 1-(2-pyridyl)-2-(4-pyridyl)ethylene and M = Pd for1and Pt for2). X-ray crystallographic studies, magnetic measurements and Mössbauer spectra jointly reveal that both compounds undergo complete hysteretic two-step SCO,i.e.HS1.0 HS0.6-0.5LS0.4-0.5? LS1.0conversion with thermal hysteresis loops of 14 K and 28 K wide for1and 13 K and 26 K wide for2. The dehydrated samples,1-dehydrated and2-dehydrated, display different SCO behaviours, unveiling that the SCO behaviours are affected by guest water molecules.

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U2 - 10.1039/d0dt00866d

DO - 10.1039/d0dt00866d

M3 - Article

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AN - SCOPUS:85085661339

SN - 1477-9226

VL - 49

SP - 7245

EP - 7251

JO - Dalton Transactions

JF - Dalton Transactions

IS - 21

ER -

Temperature-dependent hysteretic two-step spin crossover in two-dimensional Hofmann-type compounds

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