Hydrogen-bonded networks of [Fe(bpp)2]2+ spin crossover complexes and dicarboxylate anions: Structural and photomagnetic properties

Verónica Jornet-Mollá; Yan Duan; Carlos Giménez-Saiz; João C. Waerenborgh; Francisco M. Romero

doi:10.1039/c6dt02934e

Hydrogen-bonded networks of [Fe(bpp)₂]²⁺ spin crossover complexes and dicarboxylate anions: Structural and photomagnetic properties

Verónica Jornet-Mollá, Yan Duan, Carlos Giménez-Saiz, João C. Waerenborgh, Francisco M. Romero

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

15 Scopus citations

Abstract

The paper reports the syntheses, crystal structures, thermal and (photo)magnetic properties of spin crossover salts of formula [Fe(bpp)₂](C₆H₈O₄)·4H₂O (1·4H₂O), [Fe(bpp)₂](C₈H₄O₄)·2CH₃OH·H₂O (2·2MeOH·H₂O) and [Fe(bpp)₂](C₈H₄O₄)·5H₂O (2·5H₂O) (bpp = 2,6-bis(pyrazol-3yl)pyridine; C₆H₈O₄ = adipate dianion; C₈H₄O₄ = terephthalate dianion). The salts exhibit an intricate network of hydrogen bonds between low-spin iron(ii) complexes and carboxylate dianions, with solvent molecules sitting in the voids. Desolvation is accompanied by a low-spin (LS) to high-spin (HS) transformation in the materials. The dehydrated phase 2 undergoes a two-step transition with a second step showing thermal hysteresis (T_1/2↑ = 139 K and T_1/2↓ = 118 K). 2 displays a quantitative LS to HS photomagnetic conversion, with a T(LIESST) value of 63 K.

Original language	English
Pages (from-to)	17918-17928
Number of pages	11
Journal	Dalton Transactions
Volume	45
Issue number	44
DOIs	https://doi.org/10.1039/c6dt02934e
State	Published - 1 Jan 2016
Externally published	Yes

ASJC Scopus subject areas

Inorganic Chemistry

Access to Document

10.1039/c6dt02934e

Cite this

@article{96b423913be246059cbd25d611119db3,

title = "Hydrogen-bonded networks of [Fe(bpp)2]2+ spin crossover complexes and dicarboxylate anions: Structural and photomagnetic properties",

abstract = "The paper reports the syntheses, crystal structures, thermal and (photo)magnetic properties of spin crossover salts of formula [Fe(bpp)2](C6H8O4)·4H2O (1·4H2O), [Fe(bpp)2](C8H4O4)·2CH3OH·H2O (2·2MeOH·H2O) and [Fe(bpp)2](C8H4O4)·5H2O (2·5H2O) (bpp = 2,6-bis(pyrazol-3yl)pyridine; C6H8O4 = adipate dianion; C8H4O4 = terephthalate dianion). The salts exhibit an intricate network of hydrogen bonds between low-spin iron(ii) complexes and carboxylate dianions, with solvent molecules sitting in the voids. Desolvation is accompanied by a low-spin (LS) to high-spin (HS) transformation in the materials. The dehydrated phase 2 undergoes a two-step transition with a second step showing thermal hysteresis (T1/2↑ = 139 K and T1/2↓ = 118 K). 2 displays a quantitative LS to HS photomagnetic conversion, with a T(LIESST) value of 63 K.",

author = "Ver{\'o}nica Jornet-Moll{\'a} and Yan Duan and Carlos Gim{\'e}nez-Saiz and Waerenborgh, {Jo{\~a}o C.} and Romero, {Francisco M.}",

note = "Publisher Copyright: {\textcopyright} 2016 The Royal Society of Chemistry.",

year = "2016",

month = jan,

day = "1",

doi = "10.1039/c6dt02934e",

language = "English",

volume = "45",

pages = "17918--17928",

journal = "Dalton Transactions",

issn = "1477-9226",

publisher = "Royal Society of Chemistry",

number = "44",

}

TY - JOUR

T1 - Hydrogen-bonded networks of [Fe(bpp)2]2+ spin crossover complexes and dicarboxylate anions

T2 - Structural and photomagnetic properties

AU - Jornet-Mollá, Verónica

AU - Duan, Yan

AU - Giménez-Saiz, Carlos

AU - Waerenborgh, João C.

AU - Romero, Francisco M.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The paper reports the syntheses, crystal structures, thermal and (photo)magnetic properties of spin crossover salts of formula [Fe(bpp)2](C6H8O4)·4H2O (1·4H2O), [Fe(bpp)2](C8H4O4)·2CH3OH·H2O (2·2MeOH·H2O) and [Fe(bpp)2](C8H4O4)·5H2O (2·5H2O) (bpp = 2,6-bis(pyrazol-3yl)pyridine; C6H8O4 = adipate dianion; C8H4O4 = terephthalate dianion). The salts exhibit an intricate network of hydrogen bonds between low-spin iron(ii) complexes and carboxylate dianions, with solvent molecules sitting in the voids. Desolvation is accompanied by a low-spin (LS) to high-spin (HS) transformation in the materials. The dehydrated phase 2 undergoes a two-step transition with a second step showing thermal hysteresis (T1/2↑ = 139 K and T1/2↓ = 118 K). 2 displays a quantitative LS to HS photomagnetic conversion, with a T(LIESST) value of 63 K.

AB - The paper reports the syntheses, crystal structures, thermal and (photo)magnetic properties of spin crossover salts of formula [Fe(bpp)2](C6H8O4)·4H2O (1·4H2O), [Fe(bpp)2](C8H4O4)·2CH3OH·H2O (2·2MeOH·H2O) and [Fe(bpp)2](C8H4O4)·5H2O (2·5H2O) (bpp = 2,6-bis(pyrazol-3yl)pyridine; C6H8O4 = adipate dianion; C8H4O4 = terephthalate dianion). The salts exhibit an intricate network of hydrogen bonds between low-spin iron(ii) complexes and carboxylate dianions, with solvent molecules sitting in the voids. Desolvation is accompanied by a low-spin (LS) to high-spin (HS) transformation in the materials. The dehydrated phase 2 undergoes a two-step transition with a second step showing thermal hysteresis (T1/2↑ = 139 K and T1/2↓ = 118 K). 2 displays a quantitative LS to HS photomagnetic conversion, with a T(LIESST) value of 63 K.

UR - http://www.scopus.com/inward/record.url?scp=84994748981&partnerID=8YFLogxK

U2 - 10.1039/c6dt02934e

DO - 10.1039/c6dt02934e

M3 - Article

AN - SCOPUS:84994748981

SN - 1477-9226

VL - 45

SP - 17918

EP - 17928

JO - Dalton Transactions

JF - Dalton Transactions

IS - 44

ER -

Hydrogen-bonded networks of [Fe(bpp)₂]²⁺ spin crossover complexes and dicarboxylate anions: Structural and photomagnetic properties

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this