Synthesis, crystal structures and properties of iron(III) complexes exhibited both high-spin and low-spin states within the crystal lattice

Ying Ji Sun; Long Yi; Xing Yang; Yang Liu; Peng Cheng; Dai Zheng Liao; Shi Ping Yan; Zong Hui Jiang

doi:10.1016/j.ica.2004.07.051

Synthesis, crystal structures and properties of iron(III) complexes exhibited both high-spin and low-spin states within the crystal lattice

Ying Ji Sun, Long Yi, Xing Yang, Yang Liu, Peng Cheng, Dai Zheng Liao, Shi Ping Yan, Zong Hui Jiang

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

16 Scopus citations

Abstract

The structures of two novel iron(III) complexes indicate that they have [FeTp₂]⁺ cations where Fe(III) ions are in typical low-spin state, and in counter ions, [TpFe(NCS)₃]^- for 1 and [Fe(NCS)₆]^3- for 2 are both in high-spin state. Variable temperature magnetic susceptibility results also show that there are double spin states of iron(III) ions within the crystal lattice. The reaction of FeCl₃ • 6H₂O, potassium hydrotris(pyrazolyl)borate (KTp) and KSCN gives [FeTp₂][TpFe(NCS)₃] (1) and [FeTp₂]₃[Fe(NCS)₆] (2), respectively. The bond lengths and angles indicate that both complexes have [FeTp₂] ⁺ cations where Fe(III) ions are in typical low-spin state, and in counter ions, [TpFe(NCS)₃]^- for 1 and [Fe(NCS) ₆]^3- for 2 are both in high-spin state. Variable temperature magnetic susceptibility and ESR results also show that there are double spin states of iron(III) ions within the crystal lattice of both compounds.

Original language	English (US)
Pages (from-to)	396-402
Number of pages	7
Journal	Inorganica Chimica Acta
Volume	358
Issue number	2
DOIs	https://doi.org/10.1016/j.ica.2004.07.051
State	Published - Jan 25 2005
Externally published	Yes

Keywords

ESR
High-spin
Iron complexes
KTp
Low-spin
Magnetic properties

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.ica.2004.07.051

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@article{37439e5faf58489d8f1e48e5562d567c,

title = "Synthesis, crystal structures and properties of iron(III) complexes exhibited both high-spin and low-spin states within the crystal lattice",

abstract = "The structures of two novel iron(III) complexes indicate that they have [FeTp2]+ cations where Fe(III) ions are in typical low-spin state, and in counter ions, [TpFe(NCS)3]- for 1 and [Fe(NCS)6]3- for 2 are both in high-spin state. Variable temperature magnetic susceptibility results also show that there are double spin states of iron(III) ions within the crystal lattice. The reaction of FeCl3 • 6H2O, potassium hydrotris(pyrazolyl)borate (KTp) and KSCN gives [FeTp2][TpFe(NCS)3] (1) and [FeTp2]3[Fe(NCS)6] (2), respectively. The bond lengths and angles indicate that both complexes have [FeTp2] + cations where Fe(III) ions are in typical low-spin state, and in counter ions, [TpFe(NCS)3]- for 1 and [Fe(NCS) 6]3- for 2 are both in high-spin state. Variable temperature magnetic susceptibility and ESR results also show that there are double spin states of iron(III) ions within the crystal lattice of both compounds.",

keywords = "ESR, High-spin, Iron complexes, KTp, Low-spin, Magnetic properties",

author = "Sun, {Ying Ji} and Long Yi and Xing Yang and Yang Liu and Peng Cheng and Liao, {Dai Zheng} and Yan, {Shi Ping} and Jiang, {Zong Hui}",

note = "Funding Information: This work was supported by the National Science Foundation of China (Nos. 90101028 and 50173011) and the TRAPOYT of MOE China. ",

year = "2005",

month = jan,

day = "25",

doi = "10.1016/j.ica.2004.07.051",

language = "English (US)",

volume = "358",

pages = "396--402",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier BV",

number = "2",

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TY - JOUR

T1 - Synthesis, crystal structures and properties of iron(III) complexes exhibited both high-spin and low-spin states within the crystal lattice

AU - Sun, Ying Ji

AU - Yi, Long

AU - Yang, Xing

AU - Liu, Yang

AU - Cheng, Peng

AU - Liao, Dai Zheng

AU - Yan, Shi Ping

AU - Jiang, Zong Hui

N1 - Funding Information: This work was supported by the National Science Foundation of China (Nos. 90101028 and 50173011) and the TRAPOYT of MOE China.

PY - 2005/1/25

Y1 - 2005/1/25

N2 - The structures of two novel iron(III) complexes indicate that they have [FeTp2]+ cations where Fe(III) ions are in typical low-spin state, and in counter ions, [TpFe(NCS)3]- for 1 and [Fe(NCS)6]3- for 2 are both in high-spin state. Variable temperature magnetic susceptibility results also show that there are double spin states of iron(III) ions within the crystal lattice. The reaction of FeCl3 • 6H2O, potassium hydrotris(pyrazolyl)borate (KTp) and KSCN gives [FeTp2][TpFe(NCS)3] (1) and [FeTp2]3[Fe(NCS)6] (2), respectively. The bond lengths and angles indicate that both complexes have [FeTp2] + cations where Fe(III) ions are in typical low-spin state, and in counter ions, [TpFe(NCS)3]- for 1 and [Fe(NCS) 6]3- for 2 are both in high-spin state. Variable temperature magnetic susceptibility and ESR results also show that there are double spin states of iron(III) ions within the crystal lattice of both compounds.

AB - The structures of two novel iron(III) complexes indicate that they have [FeTp2]+ cations where Fe(III) ions are in typical low-spin state, and in counter ions, [TpFe(NCS)3]- for 1 and [Fe(NCS)6]3- for 2 are both in high-spin state. Variable temperature magnetic susceptibility results also show that there are double spin states of iron(III) ions within the crystal lattice. The reaction of FeCl3 • 6H2O, potassium hydrotris(pyrazolyl)borate (KTp) and KSCN gives [FeTp2][TpFe(NCS)3] (1) and [FeTp2]3[Fe(NCS)6] (2), respectively. The bond lengths and angles indicate that both complexes have [FeTp2] + cations where Fe(III) ions are in typical low-spin state, and in counter ions, [TpFe(NCS)3]- for 1 and [Fe(NCS) 6]3- for 2 are both in high-spin state. Variable temperature magnetic susceptibility and ESR results also show that there are double spin states of iron(III) ions within the crystal lattice of both compounds.

KW - ESR

KW - High-spin

KW - Iron complexes

KW - KTp

KW - Low-spin

KW - Magnetic properties

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DO - 10.1016/j.ica.2004.07.051

M3 - Article

AN - SCOPUS:10644274245

SN - 0020-1693

VL - 358

SP - 396

EP - 402

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

IS - 2

ER -

Synthesis, crystal structures and properties of iron(III) complexes exhibited both high-spin and low-spin states within the crystal lattice

Abstract

Keywords

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