Temperature-dependent nuclearity in bis(benzimidazoyl) nickel complexes and their catalysis toward conjugate addition of thiophenols to α,β-enones

Way Zen Lee; Tzu Li Wang; Huan Sheng Tsang; Cheng Yuan Liu; Chien Tien Chen; Ting Shen Kuo

doi:10.1021/om8009427

Temperature-dependent nuclearity in bis(benzimidazoyl) nickel complexes and their catalysis toward conjugate addition of thiophenols to α,β-enones

Way Zen Lee^*, Tzu Li Wang, Huan Sheng Tsang, Cheng Yuan Liu, Chien Tien Chen, Ting Shen Kuo

^*Corresponding author for this work

Department of Chemistry

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

6 Citations (Scopus)

Abstract

The nuclearity of two previously prepared nickel complexes, [LNiCl(μ-Cl)]₂.2CH₃OH (1) and L'NiCh (2) (L - bis(l-methylbenzimidazoyl-2-methyl)amine and L' - bis(l-methylbenzimidazoyl-2- methyl)-10-camphorsulfonamide), was found to be temperature-dependent. Mononuclear [LNi(CH₃OH)₂Cl]Cl.2H₂0 (3) and dinuclear [L'NiCl(μ-Cl)]₂ (4) were obtained as crystals at -20 °C. It is noteworthy that complex 2 can catalyze the conjugate addition of thiophenols to a,ß-enones in high yields; in contrast, the same reaction catalyzed by NiCl₂THF or complex 3 was far less effective.

Original language	English
Pages (from-to)	652-655
Number of pages	4
Journal	Organometallics
Volume	28
Issue number	2
DOIs	https://doi.org/10.1021/om8009427
Publication status	Published - 2009 Jan 26

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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10.1021/om8009427

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title = "Temperature-dependent nuclearity in bis(benzimidazoyl) nickel complexes and their catalysis toward conjugate addition of thiophenols to α,β-enones",

abstract = "The nuclearity of two previously prepared nickel complexes, [LNiCl(μ-Cl)]2.2CH3OH (1) and L'NiCh (2) (L - bis(l-methylbenzimidazoyl-2-methyl)amine and L' - bis(l-methylbenzimidazoyl-2- methyl)-10-camphorsulfonamide), was found to be temperature-dependent. Mononuclear [LNi(CH3OH)2Cl]Cl.2H20 (3) and dinuclear [L'NiCl(μ-Cl)]2 (4) were obtained as crystals at -20 °C. It is noteworthy that complex 2 can catalyze the conjugate addition of thiophenols to a,{\ss}-enones in high yields; in contrast, the same reaction catalyzed by NiCl2THF or complex 3 was far less effective.",

author = "Lee, {Way Zen} and Wang, {Tzu Li} and Tsang, {Huan Sheng} and Liu, {Cheng Yuan} and Chen, {Chien Tien} and Kuo, {Ting Shen}",

year = "2009",

month = jan,

day = "26",

doi = "10.1021/om8009427",

language = "English",

volume = "28",

pages = "652--655",

journal = "Organometallics",

issn = "0276-7333",

publisher = "American Chemical Society",

number = "2",

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TY - JOUR

T1 - Temperature-dependent nuclearity in bis(benzimidazoyl) nickel complexes and their catalysis toward conjugate addition of thiophenols to α,β-enones

AU - Lee, Way Zen

AU - Wang, Tzu Li

AU - Tsang, Huan Sheng

AU - Liu, Cheng Yuan

AU - Chen, Chien Tien

AU - Kuo, Ting Shen

PY - 2009/1/26

Y1 - 2009/1/26

N2 - The nuclearity of two previously prepared nickel complexes, [LNiCl(μ-Cl)]2.2CH3OH (1) and L'NiCh (2) (L - bis(l-methylbenzimidazoyl-2-methyl)amine and L' - bis(l-methylbenzimidazoyl-2- methyl)-10-camphorsulfonamide), was found to be temperature-dependent. Mononuclear [LNi(CH3OH)2Cl]Cl.2H20 (3) and dinuclear [L'NiCl(μ-Cl)]2 (4) were obtained as crystals at -20 °C. It is noteworthy that complex 2 can catalyze the conjugate addition of thiophenols to a,ß-enones in high yields; in contrast, the same reaction catalyzed by NiCl2THF or complex 3 was far less effective.

AB - The nuclearity of two previously prepared nickel complexes, [LNiCl(μ-Cl)]2.2CH3OH (1) and L'NiCh (2) (L - bis(l-methylbenzimidazoyl-2-methyl)amine and L' - bis(l-methylbenzimidazoyl-2- methyl)-10-camphorsulfonamide), was found to be temperature-dependent. Mononuclear [LNi(CH3OH)2Cl]Cl.2H20 (3) and dinuclear [L'NiCl(μ-Cl)]2 (4) were obtained as crystals at -20 °C. It is noteworthy that complex 2 can catalyze the conjugate addition of thiophenols to a,ß-enones in high yields; in contrast, the same reaction catalyzed by NiCl2THF or complex 3 was far less effective.

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U2 - 10.1021/om8009427

DO - 10.1021/om8009427

M3 - Article

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SN - 0276-7333

VL - 28

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EP - 655

JO - Organometallics

JF - Organometallics

IS - 2

ER -

Temperature-dependent nuclearity in bis(benzimidazoyl) nickel complexes and their catalysis toward conjugate addition of thiophenols to α,β-enones

Abstract

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CCDC 723805: Experimental Crystal Structure Determination

CCDC 723806: Experimental Crystal Structure Determination

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Temperature-dependent nuclearity in bis(benzimidazoyl) nickel complexes and their catalysis toward conjugate addition of thiophenols to α,β-enones

Abstract

ASJC Scopus subject areas

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CCDC 723805: Experimental Crystal Structure Determination

CCDC 723806: Experimental Crystal Structure Determination

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