Syntheses, structures and magnetic properties of two neutral coordination polymers of cobalt(II) containing a tailored aromatic diamine and pseudohalides as bridging units: Control of dimensionality by varying pseudohalide

Sumitava Khan; Subhasis Roy; Kishalay Bhar; Rajarshi Ghosh; Chia Her Lin; Joan Ribas; Barindra Kumar Ghosh

doi:10.1016/j.ica.2012.12.009

Syntheses, structures and magnetic properties of two neutral coordination polymers of cobalt(II) containing a tailored aromatic diamine and pseudohalides as bridging units: Control of dimensionality by varying pseudohalide

Sumitava Khan, Subhasis Roy, Kishalay Bhar, Rajarshi Ghosh, Chia Her Lin, Joan Ribas, Barindra Kumar Ghosh^*

^*Corresponding author for this work

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

12 Citations (Scopus)

Abstract

Two neutral coordination polymers of the types 2D [Co(bnzd)(dca) ₂]_n (1) and 3D [Co(bnzd)(N₃)₂] _n (2) (bnzd = benzidine; dca = dicyanamide) have been synthesized and characterized. X-ray structural analyses reveal that each cobalt(II) center in 1 and 2 is hexacoordinated with octahedral geometry. Compound 1 has a 2D sheet structure with a (4,4) topology bridged through bidentate bnzd and double μ_1,5 dca units. An extended 3D network structure in 2 is seen formed by μ_1,3-azide and bidentate bnzd bridges. Variable-temperature magnetic susceptibility measurements of 1 and 2 show antiferromagnetic coupling among the cobalt(II) centers mediated through pseudohalide bridges.

Original language	English
Pages (from-to)	40-45
Number of pages	6
Journal	Inorganica Chimica Acta
Volume	398
DOIs	https://doi.org/10.1016/j.ica.2012.12.009
Publication status	Published - 2013 Mar 24
Externally published	Yes

Keywords

Antiferromagnetism
Benzidine metal complexes
Cobalt(II) coordination polymers
Pseudohalide bridges
X-ray structure

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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Khan, S., Roy, S., Bhar, K., Ghosh, R., Lin, C. H., Ribas, J., & Ghosh, B. K. (2013). Syntheses, structures and magnetic properties of two neutral coordination polymers of cobalt(II) containing a tailored aromatic diamine and pseudohalides as bridging units: Control of dimensionality by varying pseudohalide. Inorganica Chimica Acta, 398, 40-45. https://doi.org/10.1016/j.ica.2012.12.009

Syntheses, structures and magnetic properties of two neutral coordination polymers of cobalt(II) containing a tailored aromatic diamine and pseudohalides as bridging units: Control of dimensionality by varying pseudohalide. / Khan, Sumitava; Roy, Subhasis; Bhar, Kishalay et al.
In: Inorganica Chimica Acta, Vol. 398, 24.03.2013, p. 40-45.

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

Khan, S, Roy, S, Bhar, K, Ghosh, R, Lin, CH, Ribas, J & Ghosh, BK 2013, 'Syntheses, structures and magnetic properties of two neutral coordination polymers of cobalt(II) containing a tailored aromatic diamine and pseudohalides as bridging units: Control of dimensionality by varying pseudohalide', Inorganica Chimica Acta, vol. 398, pp. 40-45. https://doi.org/10.1016/j.ica.2012.12.009

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title = "Syntheses, structures and magnetic properties of two neutral coordination polymers of cobalt(II) containing a tailored aromatic diamine and pseudohalides as bridging units: Control of dimensionality by varying pseudohalide",

abstract = "Two neutral coordination polymers of the types 2D [Co(bnzd)(dca) 2]n (1) and 3D [Co(bnzd)(N3)2] n (2) (bnzd = benzidine; dca = dicyanamide) have been synthesized and characterized. X-ray structural analyses reveal that each cobalt(II) center in 1 and 2 is hexacoordinated with octahedral geometry. Compound 1 has a 2D sheet structure with a (4,4) topology bridged through bidentate bnzd and double μ1,5 dca units. An extended 3D network structure in 2 is seen formed by μ1,3-azide and bidentate bnzd bridges. Variable-temperature magnetic susceptibility measurements of 1 and 2 show antiferromagnetic coupling among the cobalt(II) centers mediated through pseudohalide bridges.",

keywords = "Antiferromagnetism, Benzidine metal complexes, Cobalt(II) coordination polymers, Pseudohalide bridges, X-ray structure",

author = "Sumitava Khan and Subhasis Roy and Kishalay Bhar and Rajarshi Ghosh and Lin, {Chia Her} and Joan Ribas and Ghosh, {Barindra Kumar}",

note = "Funding Information: Financial support from the DST and CSIR New Delhi, India is gratefully acknowledged. S.K. and K.B. are grateful to the CSIR, and S.R. to UGC, New Delhi, India for fellowships. J.R. acknowledges the financial support from the Spanish Government (Grant CTQ2009/07264 ). ",

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doi = "10.1016/j.ica.2012.12.009",

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AU - Khan, Sumitava

AU - Roy, Subhasis

AU - Bhar, Kishalay

AU - Ghosh, Rajarshi

AU - Lin, Chia Her

AU - Ribas, Joan

AU - Ghosh, Barindra Kumar

N1 - Funding Information: Financial support from the DST and CSIR New Delhi, India is gratefully acknowledged. S.K. and K.B. are grateful to the CSIR, and S.R. to UGC, New Delhi, India for fellowships. J.R. acknowledges the financial support from the Spanish Government (Grant CTQ2009/07264 ).

PY - 2013/3/24

Y1 - 2013/3/24

N2 - Two neutral coordination polymers of the types 2D [Co(bnzd)(dca) 2]n (1) and 3D [Co(bnzd)(N3)2] n (2) (bnzd = benzidine; dca = dicyanamide) have been synthesized and characterized. X-ray structural analyses reveal that each cobalt(II) center in 1 and 2 is hexacoordinated with octahedral geometry. Compound 1 has a 2D sheet structure with a (4,4) topology bridged through bidentate bnzd and double μ1,5 dca units. An extended 3D network structure in 2 is seen formed by μ1,3-azide and bidentate bnzd bridges. Variable-temperature magnetic susceptibility measurements of 1 and 2 show antiferromagnetic coupling among the cobalt(II) centers mediated through pseudohalide bridges.

AB - Two neutral coordination polymers of the types 2D [Co(bnzd)(dca) 2]n (1) and 3D [Co(bnzd)(N3)2] n (2) (bnzd = benzidine; dca = dicyanamide) have been synthesized and characterized. X-ray structural analyses reveal that each cobalt(II) center in 1 and 2 is hexacoordinated with octahedral geometry. Compound 1 has a 2D sheet structure with a (4,4) topology bridged through bidentate bnzd and double μ1,5 dca units. An extended 3D network structure in 2 is seen formed by μ1,3-azide and bidentate bnzd bridges. Variable-temperature magnetic susceptibility measurements of 1 and 2 show antiferromagnetic coupling among the cobalt(II) centers mediated through pseudohalide bridges.

KW - Antiferromagnetism

KW - Benzidine metal complexes

KW - Cobalt(II) coordination polymers

KW - Pseudohalide bridges

KW - X-ray structure

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Syntheses, structures and magnetic properties of two neutral coordination polymers of cobalt(II) containing a tailored aromatic diamine and pseudohalides as bridging units: Control of dimensionality by varying pseudohalide

Abstract

Keywords

ASJC Scopus subject areas

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