CoII4, CoII7, and a Series of CoII2LnIII (LnIII = NdIII, SmIII, GdIII, TbIII, DyIII) Coordination Clusters: Search for Single Molecule Magnets

Ritwik Modak; Yeasin Sikdar; Annaliese E. Thuijs; George Christou; Sanchita Goswami

doi:10.1021/acs.inorgchem.6b01402

Co^II₄, Co^II₇, and a Series of Co^II₂Ln^III (Ln^III = Nd^III, Sm^III, Gd^III, Tb^III, Dy^III) Coordination Clusters: Search for Single Molecule Magnets

Ritwik Modak
, Yeasin Sikdar
, Annaliese E. Thuijs
, George Christou^*
, Sanchita Goswami

^*Corresponding author for this work

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

35 Citations (Scopus)

Abstract

We report herein the syntheses and investigation of the magnetic properties of a Co^II₄ compound, a series of trinuclear Co^II₂Ln^III (Ln^III = Nd^III, Sm^III, Gd^III, Tb^III, Dy^III) complexes, and a Co^II₇ complex. The homometallic Co^II₄ core was obtained from the reaction of Ln(NO₃)₃·xH₂O/Co(NO₃)₂·6H₂O/H₂vab/Et₃N in a 0.5:0.5:1:2 ratio in methanol. Variation in synthetic conditions was necessary to get the desired Co^II-Ln^III complexes. The Co^II-Ln^III assembly was synthesized from Ln(NO₃)₃·xH₂O/Co(OAc)₂·4H₂O/H₂vab/NaOMe in a 0.4:0.5:1:1 ratio in methanol. The isostructural Co^II₂Ln^III complexes have a core structure with the general formula [Co₂Ln(Hvab)₄(NO₃)](NO₃)₂·MeOH·H₂O, (where H₂vab = 2-[(2-hydroxymethyl-phenylimino)-methyl]-6-methoxy-phenol) with simultaneous crystallization of Co^II₇ complex in each reaction. The magnetic investigation of these complexes reveals that both homometallic complexes and four Co^II-Ln^III complexes (except Co^II-Nd^III) display behavior characteristic of single molecule magnets.

Original language	English
Pages (from-to)	10192-10202
Number of pages	11
Journal	Inorganic Chemistry
Volume	55
Issue number	20
DOIs	https://doi.org/10.1021/acs.inorgchem.6b01402
Publication status	Published - 17-10-2016

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Inorganic Chemistry

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@article{f639665bedca4d9290fd43c0abea5eba,

title = "CoII4, CoII7, and a Series of CoII2LnIII (LnIII = NdIII, SmIII, GdIII, TbIII, DyIII) Coordination Clusters: Search for Single Molecule Magnets",

abstract = "We report herein the syntheses and investigation of the magnetic properties of a CoII4 compound, a series of trinuclear CoII2LnIII (LnIII = NdIII, SmIII, GdIII, TbIII, DyIII) complexes, and a CoII7 complex. The homometallic CoII4 core was obtained from the reaction of Ln(NO3)3·xH2O/Co(NO3)2·6H2O/H2vab/Et3N in a 0.5:0.5:1:2 ratio in methanol. Variation in synthetic conditions was necessary to get the desired CoII-LnIII complexes. The CoII-LnIII assembly was synthesized from Ln(NO3)3·xH2O/Co(OAc)2·4H2O/H2vab/NaOMe in a 0.4:0.5:1:1 ratio in methanol. The isostructural CoII2LnIII complexes have a core structure with the general formula [Co2Ln(Hvab)4(NO3)](NO3)2·MeOH·H2O, (where H2vab = 2-[(2-hydroxymethyl-phenylimino)-methyl]-6-methoxy-phenol) with simultaneous crystallization of CoII7 complex in each reaction. The magnetic investigation of these complexes reveals that both homometallic complexes and four CoII-LnIII complexes (except CoII-NdIII) display behavior characteristic of single molecule magnets.",

author = "Ritwik Modak and Yeasin Sikdar and Thuijs, \{Annaliese E.\} and George Christou and Sanchita Goswami",

note = "Funding Information: R.M and Y.S. acknowledge UGC, India, for RFSMS fellowship (Sanction No. UGC/740/RFSMS) and DST India (Sanction No. (SR/FT/CS-107/2011) respectively for financial support. DST-FIST and DST-Purse is gratefully acknowledged for providing the X-ray diffraction and HRMS facility at the Department of Chemistry, University of Calcutta. Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

month = oct,

day = "17",

doi = "10.1021/acs.inorgchem.6b01402",

language = "English",

volume = "55",

pages = "10192--10202",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "20",

}

TY - JOUR

T1 - CoII4, CoII7, and a Series of CoII2LnIII (LnIII = NdIII, SmIII, GdIII, TbIII, DyIII) Coordination Clusters

T2 - Search for Single Molecule Magnets

AU - Modak, Ritwik

AU - Sikdar, Yeasin

AU - Thuijs, Annaliese E.

AU - Christou, George

AU - Goswami, Sanchita

N1 - Funding Information: R.M and Y.S. acknowledge UGC, India, for RFSMS fellowship (Sanction No. UGC/740/RFSMS) and DST India (Sanction No. (SR/FT/CS-107/2011) respectively for financial support. DST-FIST and DST-Purse is gratefully acknowledged for providing the X-ray diffraction and HRMS facility at the Department of Chemistry, University of Calcutta. Publisher Copyright: © 2016 American Chemical Society.

PY - 2016/10/17

Y1 - 2016/10/17

N2 - We report herein the syntheses and investigation of the magnetic properties of a CoII4 compound, a series of trinuclear CoII2LnIII (LnIII = NdIII, SmIII, GdIII, TbIII, DyIII) complexes, and a CoII7 complex. The homometallic CoII4 core was obtained from the reaction of Ln(NO3)3·xH2O/Co(NO3)2·6H2O/H2vab/Et3N in a 0.5:0.5:1:2 ratio in methanol. Variation in synthetic conditions was necessary to get the desired CoII-LnIII complexes. The CoII-LnIII assembly was synthesized from Ln(NO3)3·xH2O/Co(OAc)2·4H2O/H2vab/NaOMe in a 0.4:0.5:1:1 ratio in methanol. The isostructural CoII2LnIII complexes have a core structure with the general formula [Co2Ln(Hvab)4(NO3)](NO3)2·MeOH·H2O, (where H2vab = 2-[(2-hydroxymethyl-phenylimino)-methyl]-6-methoxy-phenol) with simultaneous crystallization of CoII7 complex in each reaction. The magnetic investigation of these complexes reveals that both homometallic complexes and four CoII-LnIII complexes (except CoII-NdIII) display behavior characteristic of single molecule magnets.

AB - We report herein the syntheses and investigation of the magnetic properties of a CoII4 compound, a series of trinuclear CoII2LnIII (LnIII = NdIII, SmIII, GdIII, TbIII, DyIII) complexes, and a CoII7 complex. The homometallic CoII4 core was obtained from the reaction of Ln(NO3)3·xH2O/Co(NO3)2·6H2O/H2vab/Et3N in a 0.5:0.5:1:2 ratio in methanol. Variation in synthetic conditions was necessary to get the desired CoII-LnIII complexes. The CoII-LnIII assembly was synthesized from Ln(NO3)3·xH2O/Co(OAc)2·4H2O/H2vab/NaOMe in a 0.4:0.5:1:1 ratio in methanol. The isostructural CoII2LnIII complexes have a core structure with the general formula [Co2Ln(Hvab)4(NO3)](NO3)2·MeOH·H2O, (where H2vab = 2-[(2-hydroxymethyl-phenylimino)-methyl]-6-methoxy-phenol) with simultaneous crystallization of CoII7 complex in each reaction. The magnetic investigation of these complexes reveals that both homometallic complexes and four CoII-LnIII complexes (except CoII-NdIII) display behavior characteristic of single molecule magnets.

UR - https://www.scopus.com/pages/publications/84991786803

UR - https://www.scopus.com/pages/publications/84991786803#tab=citedBy

U2 - 10.1021/acs.inorgchem.6b01402

DO - 10.1021/acs.inorgchem.6b01402

M3 - Article

AN - SCOPUS:84991786803

SN - 0020-1669

VL - 55

SP - 10192

EP - 10202

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 20

ER -

Co^II₄, Co^II₇, and a Series of Co^II₂Ln^III (Ln^III = Nd^III, Sm^III, Gd^III, Tb^III, Dy^III) Coordination Clusters: Search for Single Molecule Magnets

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