Liquid crystals of silver complexes derived from simple 1-alkylimidazoles

Ching K. Lee; Kuang Mei Hsu; Chun Hsien Tsai; Chung K. Lai; Ivan J.B. Lin

doi:10.1039/b314367h

Liquid crystals of silver complexes derived from simple 1-alkylimidazoles

Ching K. Lee, Kuang Mei Hsu, Chun Hsien Tsai, Chung K. Lai, Ivan J.B. Lin

Department of Chemistry

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

56 Scopus citations

Abstract

A homologous series of silver complexes of 1-alkylimidazoles (R-im, R = C_nH_2n+1, where n = 10, 12, 14, 16 and 18) was synthesized. All the C_nH_2n+1-im ligands are non-mesomorphic. Upon complexation, all the [Ag(C_nH_2n+1-im)₂]- [NO₃], except for n = 10, exhibit liquid crystalline properties. The crystal structure of [Ag(C₁₂H₂₅-im)₂][NO ₃] shows that the silver center is two-coordinate and adopts a U-shaped conformation with bilayer packing. The non-mesomorphic [Ag(C ₁₆H₃₃-bim)₂][NO₃] (bim = benzimidazole) has a three-coordinate silver ion and has a chair conformation with monolayer stacking. Non-mesomorphic [Ag(C₁₆H₃₃-bim) ₂][BF₄] has a linear geometry around the silver ion and also has a chair conformation. The mesophase for the Ag- (C_nH _2n+1-im) complexes has been identified as the smectic A (SmA) phase. [Ag(C₁₆H₃₃-im)₂]⁺ with four different anions, NO₃^-, BF₄^-, PF₆^- and CF₃SO₃ were compared. Of the four Ag-im complexes, only the with the CF₃SO₃ ^- anion does not show liquid-crystal behavior.

Original language	English
Pages (from-to)	1120-1126
Number of pages	7
Journal	Dalton Transactions
Issue number	8
DOIs	https://doi.org/10.1039/b314367h
State	Published - 21 Apr 2004

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10.1039/b314367h

CCDC 224070: Experimental Crystal Structure Determination
Lee, C. K. (Creator), Hsu, K.-M. (Creator), Tsai, C.-H. (Creator), Lai, C. K. (Creator) & Lin, I. J. B. (Creator), The Cambridge Structural Database, 2004
DOI: 10.5517/cc7j52z, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc7j52z&sid=DataCite
Dataset
CCDC 224069: Experimental Crystal Structure Determination
Lee, C. K. (Creator), Hsu, K.-M. (Creator), Tsai, C.-H. (Creator), Lai, C. K. (Creator) & Lin, I. J. B. (Creator), The Cambridge Structural Database, 2004
DOI: 10.5517/cc7j51y, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc7j51y&sid=DataCite
Dataset
CCDC 224068: Experimental Crystal Structure Determination
Lee, C. K. (Creator), Hsu, K.-M. (Creator), Tsai, C.-H. (Creator), Lai, C. K. (Creator) & Lin, I. J. B. (Creator), The Cambridge Structural Database, 2004
DOI: 10.5517/cc7j50x, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc7j50x&sid=DataCite
Dataset

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@article{8dfab8af78674ec6aa2f495f89ff3de8,

title = "Liquid crystals of silver complexes derived from simple 1-alkylimidazoles",

abstract = "A homologous series of silver complexes of 1-alkylimidazoles (R-im, R = CnH2n+1, where n = 10, 12, 14, 16 and 18) was synthesized. All the CnH2n+1-im ligands are non-mesomorphic. Upon complexation, all the [Ag(CnH2n+1-im)2]- [NO3], except for n = 10, exhibit liquid crystalline properties. The crystal structure of [Ag(C12H25-im)2][NO 3] shows that the silver center is two-coordinate and adopts a U-shaped conformation with bilayer packing. The non-mesomorphic [Ag(C 16H33-bim)2][NO3] (bim = benzimidazole) has a three-coordinate silver ion and has a chair conformation with monolayer stacking. Non-mesomorphic [Ag(C16H33-bim) 2][BF4] has a linear geometry around the silver ion and also has a chair conformation. The mesophase for the Ag- (CnH 2n+1-im) complexes has been identified as the smectic A (SmA) phase. [Ag(C16H33-im)2]+ with four different anions, NO3-, BF4-, PF6- and CF3SO3 were compared. Of the four Ag-im complexes, only the with the CF3SO3 - anion does not show liquid-crystal behavior.",

author = "Lee, {Ching K.} and Hsu, {Kuang Mei} and Tsai, {Chun Hsien} and Lai, {Chung K.} and Lin, {Ivan J.B.}",

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journal = "Dalton Transactions",

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T1 - Liquid crystals of silver complexes derived from simple 1-alkylimidazoles

AU - Lee, Ching K.

AU - Hsu, Kuang Mei

AU - Tsai, Chun Hsien

AU - Lai, Chung K.

AU - Lin, Ivan J.B.

PY - 2004/4/21

Y1 - 2004/4/21

N2 - A homologous series of silver complexes of 1-alkylimidazoles (R-im, R = CnH2n+1, where n = 10, 12, 14, 16 and 18) was synthesized. All the CnH2n+1-im ligands are non-mesomorphic. Upon complexation, all the [Ag(CnH2n+1-im)2]- [NO3], except for n = 10, exhibit liquid crystalline properties. The crystal structure of [Ag(C12H25-im)2][NO 3] shows that the silver center is two-coordinate and adopts a U-shaped conformation with bilayer packing. The non-mesomorphic [Ag(C 16H33-bim)2][NO3] (bim = benzimidazole) has a three-coordinate silver ion and has a chair conformation with monolayer stacking. Non-mesomorphic [Ag(C16H33-bim) 2][BF4] has a linear geometry around the silver ion and also has a chair conformation. The mesophase for the Ag- (CnH 2n+1-im) complexes has been identified as the smectic A (SmA) phase. [Ag(C16H33-im)2]+ with four different anions, NO3-, BF4-, PF6- and CF3SO3 were compared. Of the four Ag-im complexes, only the with the CF3SO3 - anion does not show liquid-crystal behavior.

AB - A homologous series of silver complexes of 1-alkylimidazoles (R-im, R = CnH2n+1, where n = 10, 12, 14, 16 and 18) was synthesized. All the CnH2n+1-im ligands are non-mesomorphic. Upon complexation, all the [Ag(CnH2n+1-im)2]- [NO3], except for n = 10, exhibit liquid crystalline properties. The crystal structure of [Ag(C12H25-im)2][NO 3] shows that the silver center is two-coordinate and adopts a U-shaped conformation with bilayer packing. The non-mesomorphic [Ag(C 16H33-bim)2][NO3] (bim = benzimidazole) has a three-coordinate silver ion and has a chair conformation with monolayer stacking. Non-mesomorphic [Ag(C16H33-bim) 2][BF4] has a linear geometry around the silver ion and also has a chair conformation. The mesophase for the Ag- (CnH 2n+1-im) complexes has been identified as the smectic A (SmA) phase. [Ag(C16H33-im)2]+ with four different anions, NO3-, BF4-, PF6- and CF3SO3 were compared. Of the four Ag-im complexes, only the with the CF3SO3 - anion does not show liquid-crystal behavior.

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U2 - 10.1039/b314367h

DO - 10.1039/b314367h

M3 - 期刊論文

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SN - 1477-9226

SP - 1120

EP - 1126

JO - Dalton Transactions

JF - Dalton Transactions

IS - 8

ER -

Liquid crystals of silver complexes derived from simple 1-alkylimidazoles

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CCDC 224070: Experimental Crystal Structure Determination

CCDC 224069: Experimental Crystal Structure Determination

CCDC 224068: Experimental Crystal Structure Determination

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