Syntheses, structures, and magnetic characterizations of cyanide-bridged Fe IIIMn III chains constructed by mer-Fe(iii)tricyanide and Mn(iii) Schiff bases: Magnetostructural relationship

In Young Yoo, Dae Won Ryu, Jung Hee Yoon, Ah Ram Sohn, Kwang Soo Lim, Beong Ki Cho, Eui Kwan Koh, Chang Seop Hong

Research output: Contribution to journalArticle

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Abstract

Five Fe(iii)Mn(iii) bimetallic compounds [Fe(iqc)(CN) 3][Mn(5- Xsalen)]·pMeOH·qMeCN·rH 2O [Hiqc = N-(quinolin-8-yl)isoquinoline-1-carboxamide; salen = N,N′- ethylenebis(salicylideneiminato) dianion; X = H(2), F(3, 3a), Cl(4), Br(5)] were prepared by assembling a newly designed mer-Fe tricyanide (Ph 4P)[Fe(iqc)(CN) 3]·0.5H 2O (1) and the respective Mn Schiff bases Mn(5-Xsalen) +. Compounds 2-4 show linear chain structures in which trans-positioned cyanides of the Fe precursor bridge neighbouring Mn atoms, while 5 is a zigzag chain coordination polymer where two cyanide groups of the precursor in the cis mode act as bridges. The structural change from linear to zigzag may arise from the size effect of the halogens. The reversible structural transformation occurs between 3 and 3a upon the solvation-desolvation protocol and the corresponding magnetic behaviours are affected. Furthermore, in 4 and 5, the helical chains are established through hydrogen bonding of solvent molecules. From a magnetostructural point of view, within the linear chain system, the ferromagnetic coupling in 2, contrary to antiferromagnetic interactions in 3-4, is associated with the large torsion angle of C eq-Fe-Mn-N(O) eq (eq = equatorial) as well as almost the linear Mn-NC angle.

Original languageEnglish
Pages (from-to)1776-1785
Number of pages10
JournalDalton Transactions
Volume41
Issue number6
DOIs
Publication statusPublished - 2012 Feb 14

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Schiff Bases
Cyanides
Halogens
Solvation
Hydrogen Bonding
Torsional stress
Hydrogen bonds
Polymers
Atoms
Molecules
isoquinoline
disalicylaldehyde ethylenediamine

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Syntheses, structures, and magnetic characterizations of cyanide-bridged Fe IIIMn III chains constructed by mer-Fe(iii)tricyanide and Mn(iii) Schiff bases : Magnetostructural relationship. / Yoo, In Young; Won Ryu, Dae; Hee Yoon, Jung; Ram Sohn, Ah; Soo Lim, Kwang; Ki Cho, Beong; Kwan Koh, Eui; Hong, Chang Seop.

In: Dalton Transactions, Vol. 41, No. 6, 14.02.2012, p. 1776-1785.

Research output: Contribution to journalArticle

Yoo, In Young ; Won Ryu, Dae ; Hee Yoon, Jung ; Ram Sohn, Ah ; Soo Lim, Kwang ; Ki Cho, Beong ; Kwan Koh, Eui ; Hong, Chang Seop. / Syntheses, structures, and magnetic characterizations of cyanide-bridged Fe IIIMn III chains constructed by mer-Fe(iii)tricyanide and Mn(iii) Schiff bases : Magnetostructural relationship. In: Dalton Transactions. 2012 ; Vol. 41, No. 6. pp. 1776-1785.
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T1 - Syntheses, structures, and magnetic characterizations of cyanide-bridged Fe IIIMn III chains constructed by mer-Fe(iii)tricyanide and Mn(iii) Schiff bases

T2 - Magnetostructural relationship

AU - Yoo, In Young

AU - Won Ryu, Dae

AU - Hee Yoon, Jung

AU - Ram Sohn, Ah

AU - Soo Lim, Kwang

AU - Ki Cho, Beong

AU - Kwan Koh, Eui

AU - Hong, Chang Seop

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AB - Five Fe(iii)Mn(iii) bimetallic compounds [Fe(iqc)(CN) 3][Mn(5- Xsalen)]·pMeOH·qMeCN·rH 2O [Hiqc = N-(quinolin-8-yl)isoquinoline-1-carboxamide; salen = N,N′- ethylenebis(salicylideneiminato) dianion; X = H(2), F(3, 3a), Cl(4), Br(5)] were prepared by assembling a newly designed mer-Fe tricyanide (Ph 4P)[Fe(iqc)(CN) 3]·0.5H 2O (1) and the respective Mn Schiff bases Mn(5-Xsalen) +. Compounds 2-4 show linear chain structures in which trans-positioned cyanides of the Fe precursor bridge neighbouring Mn atoms, while 5 is a zigzag chain coordination polymer where two cyanide groups of the precursor in the cis mode act as bridges. The structural change from linear to zigzag may arise from the size effect of the halogens. The reversible structural transformation occurs between 3 and 3a upon the solvation-desolvation protocol and the corresponding magnetic behaviours are affected. Furthermore, in 4 and 5, the helical chains are established through hydrogen bonding of solvent molecules. From a magnetostructural point of view, within the linear chain system, the ferromagnetic coupling in 2, contrary to antiferromagnetic interactions in 3-4, is associated with the large torsion angle of C eq-Fe-Mn-N(O) eq (eq = equatorial) as well as almost the linear Mn-NC angle.

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