Synthesis, crystal structure, and magnetic properties of dinuclear iron(III) complexes with Methoxo Bridges

Jong Won Shin; Jeong Hyeong Han; Sankara Rao Rowthu; Bong Gon Kim; Kil Sik Min

doi:10.5012/bkcs.2010.31.12.3617

Synthesis, crystal structure, and magnetic properties of dinuclear iron(III) complexes with Methoxo Bridges

Jong Won Shin, Jeong Hyeong Han, Sankara Rao Rowthu, Bong Gon Kim, Kil Sik Min

Department of Chemical Science Education

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

7 Scopus citations

Abstract

The reaction of stoichiometric amount of FeCl₂-4H₂O, (2-pyridylmethyl, 3-pyridylmethyl)amine (2,3-pyma) and sodium azide/sodium thiocyanate in methanol under aerobic conditions affords the dinuclear Fe(III) complexes, [(2,3-pyma) (N₃)₂Fe(μ-OCH₃) ₂Fe(N₃)₂(2,3-pyma)]-CH₃OH (1) and [(2,3-pyma)(NCS)₂Fe(μ-OCH₃)₂Fe(NCS) ₂(2,3-pyma)] (2) in good yield. Two bis-methoxy-bridged diiron(III) complexes are isolated and characterized. The coordination geometries around iron(III) ions in 1 and 2 are the same tetragonally distorted octahedron. The iron(III) ions are coordinated by two nitrogens of a 2,3-pyma, two nitrogens of two azide/thiocyanate ions, and two oxygens of two methoxy groups. Both compounds are isomorphous. The structures of 1 and 2 display the C-H π and/or π-π stacking interactions as well as hydrogen bonding interactions, respectively. Compounds 1 and 2 show significant antiferromagnetic couplings through the bridged methoxy groups between the iron(III) ions in the temperature range from 5 to 300 K (H=-2JS₁ S₂, J = -19.1 and -13.9 cm^-1 for 1 and 2).

Original language	English
Pages (from-to)	3617-3622
Number of pages	6
Journal	Bulletin of the Korean Chemical Society
Volume	31
Issue number	12
DOIs	https://doi.org/10.5012/bkcs.2010.31.12.3617
State	Published - 20 Dec 2010

Keywords

Crystal structure
Iron(III) complex
Ligand
Magnetic properties
Stacking interactions

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10.5012/bkcs.2010.31.12.3617

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@article{4717b38bf9ea4a0e94c3712b9c8489d2,

title = "Synthesis, crystal structure, and magnetic properties of dinuclear iron(III) complexes with Methoxo Bridges",

abstract = "The reaction of stoichiometric amount of FeCl2-4H2O, (2-pyridylmethyl, 3-pyridylmethyl)amine (2,3-pyma) and sodium azide/sodium thiocyanate in methanol under aerobic conditions affords the dinuclear Fe(III) complexes, [(2,3-pyma) (N3)2Fe(μ-OCH3) 2Fe(N3)2(2,3-pyma)]-CH3OH (1) and [(2,3-pyma)(NCS)2Fe(μ-OCH3)2Fe(NCS) 2(2,3-pyma)] (2) in good yield. Two bis-methoxy-bridged diiron(III) complexes are isolated and characterized. The coordination geometries around iron(III) ions in 1 and 2 are the same tetragonally distorted octahedron. The iron(III) ions are coordinated by two nitrogens of a 2,3-pyma, two nitrogens of two azide/thiocyanate ions, and two oxygens of two methoxy groups. Both compounds are isomorphous. The structures of 1 and 2 display the C-H π and/or π-π stacking interactions as well as hydrogen bonding interactions, respectively. Compounds 1 and 2 show significant antiferromagnetic couplings through the bridged methoxy groups between the iron(III) ions in the temperature range from 5 to 300 K (H=-2JS1 S2, J = -19.1 and -13.9 cm-1 for 1 and 2).",

keywords = "Crystal structure, Iron(III) complex, Ligand, Magnetic properties, Stacking interactions",

author = "Shin, \{Jong Won\} and Han, \{Jeong Hyeong\} and Rowthu, \{Sankara Rao\} and Kim, \{Bong Gon\} and Min, \{Kil Sik\}",

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TY - JOUR

T1 - Synthesis, crystal structure, and magnetic properties of dinuclear iron(III) complexes with Methoxo Bridges

AU - Shin, Jong Won

AU - Han, Jeong Hyeong

AU - Rowthu, Sankara Rao

AU - Kim, Bong Gon

AU - Min, Kil Sik

PY - 2010/12/20

Y1 - 2010/12/20

N2 - The reaction of stoichiometric amount of FeCl2-4H2O, (2-pyridylmethyl, 3-pyridylmethyl)amine (2,3-pyma) and sodium azide/sodium thiocyanate in methanol under aerobic conditions affords the dinuclear Fe(III) complexes, [(2,3-pyma) (N3)2Fe(μ-OCH3) 2Fe(N3)2(2,3-pyma)]-CH3OH (1) and [(2,3-pyma)(NCS)2Fe(μ-OCH3)2Fe(NCS) 2(2,3-pyma)] (2) in good yield. Two bis-methoxy-bridged diiron(III) complexes are isolated and characterized. The coordination geometries around iron(III) ions in 1 and 2 are the same tetragonally distorted octahedron. The iron(III) ions are coordinated by two nitrogens of a 2,3-pyma, two nitrogens of two azide/thiocyanate ions, and two oxygens of two methoxy groups. Both compounds are isomorphous. The structures of 1 and 2 display the C-H π and/or π-π stacking interactions as well as hydrogen bonding interactions, respectively. Compounds 1 and 2 show significant antiferromagnetic couplings through the bridged methoxy groups between the iron(III) ions in the temperature range from 5 to 300 K (H=-2JS1 S2, J = -19.1 and -13.9 cm-1 for 1 and 2).

AB - The reaction of stoichiometric amount of FeCl2-4H2O, (2-pyridylmethyl, 3-pyridylmethyl)amine (2,3-pyma) and sodium azide/sodium thiocyanate in methanol under aerobic conditions affords the dinuclear Fe(III) complexes, [(2,3-pyma) (N3)2Fe(μ-OCH3) 2Fe(N3)2(2,3-pyma)]-CH3OH (1) and [(2,3-pyma)(NCS)2Fe(μ-OCH3)2Fe(NCS) 2(2,3-pyma)] (2) in good yield. Two bis-methoxy-bridged diiron(III) complexes are isolated and characterized. The coordination geometries around iron(III) ions in 1 and 2 are the same tetragonally distorted octahedron. The iron(III) ions are coordinated by two nitrogens of a 2,3-pyma, two nitrogens of two azide/thiocyanate ions, and two oxygens of two methoxy groups. Both compounds are isomorphous. The structures of 1 and 2 display the C-H π and/or π-π stacking interactions as well as hydrogen bonding interactions, respectively. Compounds 1 and 2 show significant antiferromagnetic couplings through the bridged methoxy groups between the iron(III) ions in the temperature range from 5 to 300 K (H=-2JS1 S2, J = -19.1 and -13.9 cm-1 for 1 and 2).

KW - Crystal structure

KW - Iron(III) complex

KW - Ligand

KW - Magnetic properties

KW - Stacking interactions

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U2 - 10.5012/bkcs.2010.31.12.3617

DO - 10.5012/bkcs.2010.31.12.3617

M3 - Article

AN - SCOPUS:78650412725

SN - 0253-2964

VL - 31

SP - 3617

EP - 3622

JO - Bulletin of the Korean Chemical Society

JF - Bulletin of the Korean Chemical Society

IS - 12

ER -

Synthesis, crystal structure, and magnetic properties of dinuclear iron(III) complexes with Methoxo Bridges

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Keywords

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