Tetranuclear mixed-valence Co(II/III) and binuclear Ni(II) complexes incorporating hydroxyl-rich ligand: Syntheses, structures and magnetic properties

Su Yun Zhang; Bin Xu; Lina Zheng; Wenqian Chen; Yahong Li; Wu Li

doi:10.1016/j.ica.2010.11.038

Tetranuclear mixed-valence Co(II/III) and binuclear Ni(II) complexes incorporating hydroxyl-rich ligand: Syntheses, structures and magnetic properties

Su Yun Zhang, Bin Xu, Lina Zheng, Wenqian Chen, Yahong Li, Wu Li

Advanced Institute for Materials Research (AIMR)

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

16 Citations (Scopus)

Abstract

Three complexes of composition [Co₂^IICo ₂^III(H₂hbhpd)₂(H₄hbhpd) ₂(H₂O)₂]Cl₂(CH₃OH) ₄ (1), [Co₂^IICo₂ ^III(H₂hbhpd)₂(H₄hbhpd) ₂(H₂O)₂](NO₃)₂(CH ₃OH)₄ (2) and [Ni₂(H₄hbhpd) ₂(NO₃)](NO₃)(CH₃OH)_1.5 (3) (H₅hbhpd = 2-(2-hydroxy-benzylamino)-2-hydroxymethyl-propane-1,3- diol) have been synthesized and their structures have been characterized. Complexes 1 and 2 are mixed-valence cobalt clusters and display face-sharing monovacant dicubane structures. In the complexes 1 and 2, one of the three alkyl hydroxyl groups of H₅hbhpd ligand is deprotonated instead of deprotonation of phenyl hydroxyl group; thus monoanionic H₄hbhpd ^- ligand displays novel η³, η¹, η¹, μ₃ coordination mode. Complex 3 is binuclear, and the two metal centers of 3 are bridged by two deprotonated phenyl hydroxyl oxygen atoms and iso-orthogonalized by a nitrato group in η¹η ¹-O,O′ coordination fashion. Variable-temperature solid-state dc magnetization studies have been performed in the temperature range 2-300 K for compounds 1 and 3. Antiferromagnetic interactions were determined for 1 and ferromagnetic couplings were found for 3.

Original language	English
Pages (from-to)	44-50
Number of pages	7
Journal	Inorganica Chimica Acta
Volume	367
Issue number	1
DOIs	https://doi.org/10.1016/j.ica.2010.11.038
Publication status	Published - 2011 Feb 28

Keywords

Binuclear complex
Coordination mode
Magnetic properties
Mixed-valence
Tetranuclear clusters

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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@article{1fca27772a36445797eab546e47b685f,

title = "Tetranuclear mixed-valence Co(II/III) and binuclear Ni(II) complexes incorporating hydroxyl-rich ligand: Syntheses, structures and magnetic properties",

abstract = "Three complexes of composition [Co2IICo 2III(H2hbhpd)2(H4hbhpd) 2(H2O)2]Cl2(CH3OH) 4 (1), [Co2IICo2 III(H2hbhpd)2(H4hbhpd) 2(H2O)2](NO3)2(CH 3OH)4 (2) and [Ni2(H4hbhpd) 2(NO3)](NO3)(CH3OH)1.5 (3) (H5hbhpd = 2-(2-hydroxy-benzylamino)-2-hydroxymethyl-propane-1,3- diol) have been synthesized and their structures have been characterized. Complexes 1 and 2 are mixed-valence cobalt clusters and display face-sharing monovacant dicubane structures. In the complexes 1 and 2, one of the three alkyl hydroxyl groups of H5hbhpd ligand is deprotonated instead of deprotonation of phenyl hydroxyl group; thus monoanionic H4hbhpd - ligand displays novel η3, η1, η1, μ3 coordination mode. Complex 3 is binuclear, and the two metal centers of 3 are bridged by two deprotonated phenyl hydroxyl oxygen atoms and iso-orthogonalized by a nitrato group in η1η 1-O,O′ coordination fashion. Variable-temperature solid-state dc magnetization studies have been performed in the temperature range 2-300 K for compounds 1 and 3. Antiferromagnetic interactions were determined for 1 and ferromagnetic couplings were found for 3.",

keywords = "Binuclear complex, Coordination mode, Magnetic properties, Mixed-valence, Tetranuclear clusters",

author = "Zhang, {Su Yun} and Bin Xu and Lina Zheng and Wenqian Chen and Yahong Li and Wu Li",

year = "2011",

month = feb,

day = "28",

doi = "10.1016/j.ica.2010.11.038",

language = "English",

volume = "367",

pages = "44--50",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier BV",

number = "1",

}

TY - JOUR

T1 - Tetranuclear mixed-valence Co(II/III) and binuclear Ni(II) complexes incorporating hydroxyl-rich ligand

T2 - Syntheses, structures and magnetic properties

AU - Zhang, Su Yun

AU - Xu, Bin

AU - Zheng, Lina

AU - Chen, Wenqian

AU - Li, Yahong

AU - Li, Wu

PY - 2011/2/28

Y1 - 2011/2/28

N2 - Three complexes of composition [Co2IICo 2III(H2hbhpd)2(H4hbhpd) 2(H2O)2]Cl2(CH3OH) 4 (1), [Co2IICo2 III(H2hbhpd)2(H4hbhpd) 2(H2O)2](NO3)2(CH 3OH)4 (2) and [Ni2(H4hbhpd) 2(NO3)](NO3)(CH3OH)1.5 (3) (H5hbhpd = 2-(2-hydroxy-benzylamino)-2-hydroxymethyl-propane-1,3- diol) have been synthesized and their structures have been characterized. Complexes 1 and 2 are mixed-valence cobalt clusters and display face-sharing monovacant dicubane structures. In the complexes 1 and 2, one of the three alkyl hydroxyl groups of H5hbhpd ligand is deprotonated instead of deprotonation of phenyl hydroxyl group; thus monoanionic H4hbhpd - ligand displays novel η3, η1, η1, μ3 coordination mode. Complex 3 is binuclear, and the two metal centers of 3 are bridged by two deprotonated phenyl hydroxyl oxygen atoms and iso-orthogonalized by a nitrato group in η1η 1-O,O′ coordination fashion. Variable-temperature solid-state dc magnetization studies have been performed in the temperature range 2-300 K for compounds 1 and 3. Antiferromagnetic interactions were determined for 1 and ferromagnetic couplings were found for 3.

AB - Three complexes of composition [Co2IICo 2III(H2hbhpd)2(H4hbhpd) 2(H2O)2]Cl2(CH3OH) 4 (1), [Co2IICo2 III(H2hbhpd)2(H4hbhpd) 2(H2O)2](NO3)2(CH 3OH)4 (2) and [Ni2(H4hbhpd) 2(NO3)](NO3)(CH3OH)1.5 (3) (H5hbhpd = 2-(2-hydroxy-benzylamino)-2-hydroxymethyl-propane-1,3- diol) have been synthesized and their structures have been characterized. Complexes 1 and 2 are mixed-valence cobalt clusters and display face-sharing monovacant dicubane structures. In the complexes 1 and 2, one of the three alkyl hydroxyl groups of H5hbhpd ligand is deprotonated instead of deprotonation of phenyl hydroxyl group; thus monoanionic H4hbhpd - ligand displays novel η3, η1, η1, μ3 coordination mode. Complex 3 is binuclear, and the two metal centers of 3 are bridged by two deprotonated phenyl hydroxyl oxygen atoms and iso-orthogonalized by a nitrato group in η1η 1-O,O′ coordination fashion. Variable-temperature solid-state dc magnetization studies have been performed in the temperature range 2-300 K for compounds 1 and 3. Antiferromagnetic interactions were determined for 1 and ferromagnetic couplings were found for 3.

KW - Binuclear complex

KW - Coordination mode

KW - Magnetic properties

KW - Mixed-valence

KW - Tetranuclear clusters

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U2 - 10.1016/j.ica.2010.11.038

DO - 10.1016/j.ica.2010.11.038

M3 - Article

AN - SCOPUS:79551690291

VL - 367

SP - 44

EP - 50

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

IS - 1

ER -