Synthesis and anion sensing of water-soluble metallomacrocycles

Liao Yuan Yao; Lin Qin; Ting Zheng Xie; Yi Zhi Li; Shu Yan Yu

doi:10.1021/ic200047t

Synthesis and anion sensing of water-soluble metallomacrocycles

Liao Yuan Yao, Lin Qin, Ting Zheng Xie, Yi Zhi Li, Shu Yan Yu^*

^*Corresponding author for this work

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

53 Citations (Scopus)

Abstract

The self-assembly of (TMEDA)Pd(NO₃)₂ or (TMEDA)Pt(NO₃)₂ (where TMEDA = N¹,N ¹,N²,N²-tetramethylethane-1,2-diamine) and anthracene- or ferrocene-based diimidazole ligands (L^1-3) in aqueous solution affords a series of positively charged [M₂L ₂]⁴⁺ dimetallomacrocycles. Their structures were characterized by ¹H NMR and electrospray ionization mass spectrometry and in the cases of {[(TMEDA)Pd]₂L¹₂}(NO ₃)₄ (1), {[(TMEDA)Pd]₂L¹ ₂}(PF₆)₄ (1a), and {[(TMEDA)Pd] ₂L³₂}(NO₃)₄ (4) by single-crystal X-ray diffraction analysis. Interestingly, the NMR spectra of 1 and 1a revealed that the difference of their structures, as confirmed by X-ray diffraction analysis, was that a NO₃^- of 1 was encapsulated inside the cavity of the basket-shaped metallomacrocycle by C-H•••O hydrogen bonds, while PF₆^- of 1a was bound outside by C-H•••F hydrogen bonds. The fluorescence titration experiment exhibited the formation of 1:1 host-guest complexation for anthracene-based positively charged [M₂L₂] ⁴⁺-type metallomacrocycles with NO₃^-. The interactions between metallomacrocycles and various anions were investigated via fluorescence titration and cyclic voltammetry studies, respectively.

Original language	English
Pages (from-to)	6055-6062
Number of pages	8
Journal	Inorganic Chemistry
Volume	50
Issue number	13
DOIs	https://doi.org/10.1021/ic200047t
Publication status	Published - 4 Jul 2011
Externally published	Yes

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title = "Synthesis and anion sensing of water-soluble metallomacrocycles",

abstract = "The self-assembly of (TMEDA)Pd(NO3)2 or (TMEDA)Pt(NO3)2 (where TMEDA = N1,N 1,N2,N2-tetramethylethane-1,2-diamine) and anthracene- or ferrocene-based diimidazole ligands (L1-3) in aqueous solution affords a series of positively charged [M2L 2]4+ dimetallomacrocycles. Their structures were characterized by 1H NMR and electrospray ionization mass spectrometry and in the cases of {[(TMEDA)Pd]2L12}(NO 3)4 (1), {[(TMEDA)Pd]2L1 2}(PF6)4 (1a), and {[(TMEDA)Pd] 2L32}(NO3)4 (4) by single-crystal X-ray diffraction analysis. Interestingly, the NMR spectra of 1 and 1a revealed that the difference of their structures, as confirmed by X-ray diffraction analysis, was that a NO3- of 1 was encapsulated inside the cavity of the basket-shaped metallomacrocycle by C-H•••O hydrogen bonds, while PF6- of 1a was bound outside by C-H•••F hydrogen bonds. The fluorescence titration experiment exhibited the formation of 1:1 host-guest complexation for anthracene-based positively charged [M2L2] 4+-type metallomacrocycles with NO3-. The interactions between metallomacrocycles and various anions were investigated via fluorescence titration and cyclic voltammetry studies, respectively.",

author = "Yao, {Liao Yuan} and Lin Qin and Xie, {Ting Zheng} and Li, {Yi Zhi} and Yu, {Shu Yan}",

year = "2011",

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T1 - Synthesis and anion sensing of water-soluble metallomacrocycles

AU - Yao, Liao Yuan

AU - Qin, Lin

AU - Xie, Ting Zheng

AU - Li, Yi Zhi

AU - Yu, Shu Yan

PY - 2011/7/4

Y1 - 2011/7/4

N2 - The self-assembly of (TMEDA)Pd(NO3)2 or (TMEDA)Pt(NO3)2 (where TMEDA = N1,N 1,N2,N2-tetramethylethane-1,2-diamine) and anthracene- or ferrocene-based diimidazole ligands (L1-3) in aqueous solution affords a series of positively charged [M2L 2]4+ dimetallomacrocycles. Their structures were characterized by 1H NMR and electrospray ionization mass spectrometry and in the cases of {[(TMEDA)Pd]2L12}(NO 3)4 (1), {[(TMEDA)Pd]2L1 2}(PF6)4 (1a), and {[(TMEDA)Pd] 2L32}(NO3)4 (4) by single-crystal X-ray diffraction analysis. Interestingly, the NMR spectra of 1 and 1a revealed that the difference of their structures, as confirmed by X-ray diffraction analysis, was that a NO3- of 1 was encapsulated inside the cavity of the basket-shaped metallomacrocycle by C-H•••O hydrogen bonds, while PF6- of 1a was bound outside by C-H•••F hydrogen bonds. The fluorescence titration experiment exhibited the formation of 1:1 host-guest complexation for anthracene-based positively charged [M2L2] 4+-type metallomacrocycles with NO3-. The interactions between metallomacrocycles and various anions were investigated via fluorescence titration and cyclic voltammetry studies, respectively.

AB - The self-assembly of (TMEDA)Pd(NO3)2 or (TMEDA)Pt(NO3)2 (where TMEDA = N1,N 1,N2,N2-tetramethylethane-1,2-diamine) and anthracene- or ferrocene-based diimidazole ligands (L1-3) in aqueous solution affords a series of positively charged [M2L 2]4+ dimetallomacrocycles. Their structures were characterized by 1H NMR and electrospray ionization mass spectrometry and in the cases of {[(TMEDA)Pd]2L12}(NO 3)4 (1), {[(TMEDA)Pd]2L1 2}(PF6)4 (1a), and {[(TMEDA)Pd] 2L32}(NO3)4 (4) by single-crystal X-ray diffraction analysis. Interestingly, the NMR spectra of 1 and 1a revealed that the difference of their structures, as confirmed by X-ray diffraction analysis, was that a NO3- of 1 was encapsulated inside the cavity of the basket-shaped metallomacrocycle by C-H•••O hydrogen bonds, while PF6- of 1a was bound outside by C-H•••F hydrogen bonds. The fluorescence titration experiment exhibited the formation of 1:1 host-guest complexation for anthracene-based positively charged [M2L2] 4+-type metallomacrocycles with NO3-. The interactions between metallomacrocycles and various anions were investigated via fluorescence titration and cyclic voltammetry studies, respectively.

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VL - 50

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JO - Inorganic Chemistry

JF - Inorganic Chemistry

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ER -

Synthesis and anion sensing of water-soluble metallomacrocycles

Abstract

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