Ferroelectricity based on coordination compound: Transition metal Co(II) sulfates templated by homochiral 2-methylpiperazine (C5H14N2)[Co(H2O)6](SO4)2

Ferroelectricity based on coordination compound: Transition metal Co(II) sulfates templated by homochiral 2-methylpiperazine (C5H14N2)[Co(H2O)6](SO4)2

Two coordination compounds (C5H14N2)[Co(H2O)6](SO4)2 (1 and 2) were prepared by reacting homochiral (R)-2-methylpiperazine with cobalt sulfate heptahydrate with a solution method in the presence of concentrated sulfuric acid (H2SO4). They are polymorphs, with hydrogen bonding structures differing ob...

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Bibliographic Details
Published in:Chinese chemical letters 2014-06, Vol.25 (6), p.967-972
Main Authors: Chen, Li-Zhuang, Huang, Deng-Deng, Pan, Qi-Jian, Wang, Fang-Ming
Format: Article
Language:eng
Subjects:
Co(II) compound
Dielectric
Ferroelectric
Homochiral
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Summary:Two coordination compounds (C5H14N2)[Co(H2O)6](SO4)2 (1 and 2) were prepared by reacting homochiral (R)-2-methylpiperazine with cobalt sulfate heptahydrate with a solution method in the presence of concentrated sulfuric acid (H2SO4). They are polymorphs, with hydrogen bonding structures differing obviously. Compound 1 displays ferroelectric behaviors. Reacting homochiral (R)-2-methylpiperazine with cobalt sulfate heptahydrate by the solution method in the presence of concentrated sulfuric acid (H2SO4) yielded two coordination compounds (C5H14N2)[Co(H2O)6](SO4)2 (1 and 2). They are polymorphs, but their hydrogen bonds structure differ significantly. Both 1 and 2 crystallize in chiral space group P21 which is related with point group C2, and experimental results suggest that 1 displays ferroelectric behaviors.
ISSN:1001-8417
1878-5964