Synthesis and magnetic properties of Fe-Mn-Cr multinuclear complexes with 4-amino-1,2,4-triazole and oxalate ligands

Iis Siti Jahro; Djulia Onggo; A. Ismunandar; Susanto Imam Rahayu; Esther Jacoba Martha Vertelman; Petra Van Koningsbruggen

Synthesis and magnetic properties of Fe-Mn-Cr multinuclear complexes with 4-amino-1,2,4-triazole and oxalate ligands

Iis Siti Jahro
, Djulia Onggo
, A. Ismunandar
, Susanto Imam Rahayu
, Esther Jacoba Martha Vertelman
, Petra Van Koningsbruggen

Chemical Engineering & Applied Chemistry

Bandung Institute of Technology
Rijksuniversiteit Groningen

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

Abstract

A multinuclear Fe-Mn-Cr complex with 4-amino-1,2,4-triazole (NH₂trz) and oxalate (ox) ligands has been synthesized successfully. The formula of the [Fe(NH₂trz)₃][ClO₄][MnCr(ox)₃].4H₂O complex has been obtained based on the metal and C, H, N contents. The presence of water molecules, metal-ligand bonding and bridge ligand in the multinuclear complex has been confirmed by its infrared spectrum. The compound crystallizes in the hexagonal system with cell parameters of a = b = 18.695 Å and c = 57.351 Å. The compound shows a gradual spin crossover for iron(II) in the [Fe(NH₂trz)₃]²⁺ with transition temperature (T_1/2) of 205 K. The antiferromagnetic interaction between Cr(III) and Mn(II) ions in the [MnCr(ox)₃]^{n n-} network is observed from the Weiss constant (θ) of –2.3 K.

Original language	English
Pages (from-to)	95-99
Number of pages	5
Journal	Journal of Natural Sciences and Mathematics
Volume	11
Issue number	3
Publication status	Published - 2006

Keywords

[Fe(NH2trz)3]2+
[MnCr(ox)3]n n-
magnetic properties
spin crossover
antiferromagnetic

Cite this

@article{a860e58c62f14166b2b0d2396ff30f8a,

title = "Synthesis and magnetic properties of Fe-Mn-Cr multinuclear complexes with 4-amino-1,2,4-triazole and oxalate ligands",

abstract = "A multinuclear Fe-Mn-Cr complex with 4-amino-1,2,4-triazole (NH2trz) and oxalate (ox) ligands has been synthesized successfully. The formula of the [Fe(NH2trz)3][ClO4][MnCr(ox)3].4H2O complex has been obtained based on the metal and C, H, N contents. The presence of water molecules, metal-ligand bonding and bridge ligand in the multinuclear complex has been confirmed by its infrared spectrum. The compound crystallizes in the hexagonal system with cell parameters of a = b = 18.695 {\AA} and c = 57.351 {\AA}. The compound shows a gradual spin crossover for iron(II) in the [Fe(NH2trz)3]2+ with transition temperature (T1/2) of 205 K. The antiferromagnetic interaction between Cr(III) and Mn(II) ions in the [MnCr(ox)3]n n- network is observed from the Weiss constant (θ) of –2.3 K.",

keywords = "[Fe(NH2trz)3]2+, [MnCr(ox)3]n n-, magnetic properties, spin crossover, antiferromagnetic",

author = "Jahro, \{Iis Siti\} and Djulia Onggo and A. Ismunandar and Rahayu, \{Susanto Imam\} and Vertelman, \{Esther Jacoba Martha\} and \{Van Koningsbruggen\}, Petra",

year = "2006",

language = "English",

volume = "11",

pages = "95--99",

journal = "Journal of Natural Sciences and Mathematics ",

issn = "0022-2941",

number = "3",

}

TY - JOUR

T1 - Synthesis and magnetic properties of Fe-Mn-Cr multinuclear complexes with 4-amino-1,2,4-triazole and oxalate ligands

AU - Jahro, Iis Siti

AU - Onggo, Djulia

AU - Ismunandar, A.

AU - Rahayu, Susanto Imam

AU - Vertelman, Esther Jacoba Martha

AU - Van Koningsbruggen, Petra

PY - 2006

Y1 - 2006

N2 - A multinuclear Fe-Mn-Cr complex with 4-amino-1,2,4-triazole (NH2trz) and oxalate (ox) ligands has been synthesized successfully. The formula of the [Fe(NH2trz)3][ClO4][MnCr(ox)3].4H2O complex has been obtained based on the metal and C, H, N contents. The presence of water molecules, metal-ligand bonding and bridge ligand in the multinuclear complex has been confirmed by its infrared spectrum. The compound crystallizes in the hexagonal system with cell parameters of a = b = 18.695 Å and c = 57.351 Å. The compound shows a gradual spin crossover for iron(II) in the [Fe(NH2trz)3]2+ with transition temperature (T1/2) of 205 K. The antiferromagnetic interaction between Cr(III) and Mn(II) ions in the [MnCr(ox)3]n n- network is observed from the Weiss constant (θ) of –2.3 K.

AB - A multinuclear Fe-Mn-Cr complex with 4-amino-1,2,4-triazole (NH2trz) and oxalate (ox) ligands has been synthesized successfully. The formula of the [Fe(NH2trz)3][ClO4][MnCr(ox)3].4H2O complex has been obtained based on the metal and C, H, N contents. The presence of water molecules, metal-ligand bonding and bridge ligand in the multinuclear complex has been confirmed by its infrared spectrum. The compound crystallizes in the hexagonal system with cell parameters of a = b = 18.695 Å and c = 57.351 Å. The compound shows a gradual spin crossover for iron(II) in the [Fe(NH2trz)3]2+ with transition temperature (T1/2) of 205 K. The antiferromagnetic interaction between Cr(III) and Mn(II) ions in the [MnCr(ox)3]n n- network is observed from the Weiss constant (θ) of –2.3 K.

KW - [Fe(NH2trz)3]2+

KW - [MnCr(ox)3]n n-

KW - magnetic properties

KW - spin crossover

KW - antiferromagnetic

UR - https://jms.fmipa.itb.ac.id/ojs_3.0.2/index.php/jms/article/view/125

M3 - Article

SN - 0022-2941

VL - 11

SP - 95

EP - 99

JO - Journal of Natural Sciences and Mathematics

JF - Journal of Natural Sciences and Mathematics

IS - 3

ER -

Synthesis and magnetic properties of Fe-Mn-Cr multinuclear complexes with 4-amino-1,2,4-triazole and oxalate ligands

Abstract

Keywords

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