Tetrahedral MII based binuclear double-stranded helicates: single-ion-magnet and fluorescence behaviour

Vijay Parmar

doi:10.1039/C5DT04173B

Tetrahedral MII based binuclear double-stranded helicates: single-ion-magnet and fluorescence behaviour

Vijay Parmar

Department of Chemistry

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

Abstract

A rare class of dinuclear double-stranded helicates having tetrahedral metal centres with formulae [Co2(L1)2]·2(CH3CN) (1), [Co2(L2)2]·6(CH3CN) (2), [Zn2(L1)2]·2(CH3CN)·(CH3OH) (3) and [Zn2(L2)2]·4(CH3CN) (4) were synthesized and characterized. Detailed dc and ac magnetic susceptibility measurements reveal the presence of field induced slow magnetic relaxation behaviour in high spin tetrahedral CoII centres with an easy-plane magnetic anisotropy. Complexes 1 and 2 are the rare examples of transition metal based helicates showing such behaviour. Furthermore, 3 and 4 exhibit fluorescence emission in different solvents that are analyzed in terms of fluorescence quantum yields and lifetimes.

Original language	English
Pages (from-to)	4548-4557
Journal	Dalton Trans.
Volume	45
DOIs	https://doi.org/10.1039/C5DT04173B
Publication status	Published - 25 Jan 2016

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title = "Tetrahedral MII based binuclear double-stranded helicates: single-ion-magnet and fluorescence behaviour",

abstract = "A rare class of dinuclear double-stranded helicates having tetrahedral metal centres with formulae [Co2(L1)2]·2(CH3CN) (1), [Co2(L2)2]·6(CH3CN) (2), [Zn2(L1)2]·2(CH3CN)·(CH3OH) (3) and [Zn2(L2)2]·4(CH3CN) (4) were synthesized and characterized. Detailed dc and ac magnetic susceptibility measurements reveal the presence of field induced slow magnetic relaxation behaviour in high spin tetrahedral CoII centres with an easy-plane magnetic anisotropy. Complexes 1 and 2 are the rare examples of transition metal based helicates showing such behaviour. Furthermore, 3 and 4 exhibit fluorescence emission in different solvents that are analyzed in terms of fluorescence quantum yields and lifetimes.",

author = "Vijay Parmar",

year = "2016",

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doi = "10.1039/C5DT04173B",

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journal = "Dalton Trans.",

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publisher = "Royal Society of Chemistry",

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AU - Parmar, Vijay

PY - 2016/1/25

Y1 - 2016/1/25

N2 - A rare class of dinuclear double-stranded helicates having tetrahedral metal centres with formulae [Co2(L1)2]·2(CH3CN) (1), [Co2(L2)2]·6(CH3CN) (2), [Zn2(L1)2]·2(CH3CN)·(CH3OH) (3) and [Zn2(L2)2]·4(CH3CN) (4) were synthesized and characterized. Detailed dc and ac magnetic susceptibility measurements reveal the presence of field induced slow magnetic relaxation behaviour in high spin tetrahedral CoII centres with an easy-plane magnetic anisotropy. Complexes 1 and 2 are the rare examples of transition metal based helicates showing such behaviour. Furthermore, 3 and 4 exhibit fluorescence emission in different solvents that are analyzed in terms of fluorescence quantum yields and lifetimes.

AB - A rare class of dinuclear double-stranded helicates having tetrahedral metal centres with formulae [Co2(L1)2]·2(CH3CN) (1), [Co2(L2)2]·6(CH3CN) (2), [Zn2(L1)2]·2(CH3CN)·(CH3OH) (3) and [Zn2(L2)2]·4(CH3CN) (4) were synthesized and characterized. Detailed dc and ac magnetic susceptibility measurements reveal the presence of field induced slow magnetic relaxation behaviour in high spin tetrahedral CoII centres with an easy-plane magnetic anisotropy. Complexes 1 and 2 are the rare examples of transition metal based helicates showing such behaviour. Furthermore, 3 and 4 exhibit fluorescence emission in different solvents that are analyzed in terms of fluorescence quantum yields and lifetimes.

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DO - 10.1039/C5DT04173B

M3 - Article

SN - 1477-9226

VL - 45

SP - 4548

EP - 4557

JO - Dalton Trans.

JF - Dalton Trans.

ER -

Tetrahedral MII based binuclear double-stranded helicates: single-ion-magnet and fluorescence behaviour

Abstract

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