Syntheses and structures of magnesium complexes with reduced α-diimine ligands

Jing Gao; Yanyan Liu; Yanxia Zhao; Xiao Juan Yang; Yunxia Sui

doi:10.1021/om2003199

Syntheses and structures of magnesium complexes with reduced α-diimine ligands

Jing Gao, Yanyan Liu, Yanxia Zhao, Xiao Juan Yang^*, Yunxia Sui

^*Corresponding author for this work

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

36 Citations (Scopus)

Abstract

The reduction of neutral α-diimine ligands bearing different substituents on the N-aryl rings by different amounts of potassium metal and subsequent reaction with anhydrous MgCl₂ in THF afforded a series of magnesium compounds, [(L^iPr)^2-Mg(THF)₂] ·THF (2), [(L^Mes)^2-Mg(THF)₃] (3), [(L^iPr)^-₂Mg]·THF (4), [(L ^Mes)^-₂Mg] (5), and [(L^Mes) ^2-₂Mg(η⁶:η⁶-K(THF) ₂)][K(THF)₆]·(THF)₂ (6) (L^iPr = [(2,6-ⁱPr₂C₆H₃)NC(Me)] ₂), L^Mes = [(2,4,6-Me₃C₆H ₂)NC(Me)]₂). Complexes 2-6 have been characterized by single-crystal X-ray diffraction, elemental analysis, NMR spectroscopy, and EPR studies (for 4 and 5). The noninnocent α-diimine ligands exist as the dianionic form in compounds 2, 3, and 6 and as a monoanion in 4 and 5. Effects of the ligand substituents and the amount of the reducing agent on the structure of the product have been discussed.

Original language	English
Pages (from-to)	6071-6077
Number of pages	7
Journal	Organometallics
Volume	30
Issue number	22
DOIs	https://doi.org/10.1021/om2003199
Publication status	Published - 28 Nov 2011
Externally published	Yes

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title = "Syntheses and structures of magnesium complexes with reduced α-diimine ligands",

abstract = "The reduction of neutral α-diimine ligands bearing different substituents on the N-aryl rings by different amounts of potassium metal and subsequent reaction with anhydrous MgCl2 in THF afforded a series of magnesium compounds, [(LiPr)2-Mg(THF)2] ·THF (2), [(LMes)2-Mg(THF)3] (3), [(LiPr)-2Mg]·THF (4), [(L Mes)-2Mg] (5), and [(LMes) 2-2Mg(η6:η6-K(THF) 2)][K(THF)6]·(THF)2 (6) (LiPr = [(2,6-iPr2C6H3)NC(Me)] 2), LMes = [(2,4,6-Me3C6H 2)NC(Me)]2). Complexes 2-6 have been characterized by single-crystal X-ray diffraction, elemental analysis, NMR spectroscopy, and EPR studies (for 4 and 5). The noninnocent α-diimine ligands exist as the dianionic form in compounds 2, 3, and 6 and as a monoanion in 4 and 5. Effects of the ligand substituents and the amount of the reducing agent on the structure of the product have been discussed.",

author = "Jing Gao and Yanyan Liu and Yanxia Zhao and Yang, {Xiao Juan} and Yunxia Sui",

year = "2011",

month = nov,

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doi = "10.1021/om2003199",

language = "English",

volume = "30",

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journal = "Organometallics",

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T1 - Syntheses and structures of magnesium complexes with reduced α-diimine ligands

AU - Gao, Jing

AU - Liu, Yanyan

AU - Zhao, Yanxia

AU - Yang, Xiao Juan

AU - Sui, Yunxia

PY - 2011/11/28

Y1 - 2011/11/28

N2 - The reduction of neutral α-diimine ligands bearing different substituents on the N-aryl rings by different amounts of potassium metal and subsequent reaction with anhydrous MgCl2 in THF afforded a series of magnesium compounds, [(LiPr)2-Mg(THF)2] ·THF (2), [(LMes)2-Mg(THF)3] (3), [(LiPr)-2Mg]·THF (4), [(L Mes)-2Mg] (5), and [(LMes) 2-2Mg(η6:η6-K(THF) 2)][K(THF)6]·(THF)2 (6) (LiPr = [(2,6-iPr2C6H3)NC(Me)] 2), LMes = [(2,4,6-Me3C6H 2)NC(Me)]2). Complexes 2-6 have been characterized by single-crystal X-ray diffraction, elemental analysis, NMR spectroscopy, and EPR studies (for 4 and 5). The noninnocent α-diimine ligands exist as the dianionic form in compounds 2, 3, and 6 and as a monoanion in 4 and 5. Effects of the ligand substituents and the amount of the reducing agent on the structure of the product have been discussed.

AB - The reduction of neutral α-diimine ligands bearing different substituents on the N-aryl rings by different amounts of potassium metal and subsequent reaction with anhydrous MgCl2 in THF afforded a series of magnesium compounds, [(LiPr)2-Mg(THF)2] ·THF (2), [(LMes)2-Mg(THF)3] (3), [(LiPr)-2Mg]·THF (4), [(L Mes)-2Mg] (5), and [(LMes) 2-2Mg(η6:η6-K(THF) 2)][K(THF)6]·(THF)2 (6) (LiPr = [(2,6-iPr2C6H3)NC(Me)] 2), LMes = [(2,4,6-Me3C6H 2)NC(Me)]2). Complexes 2-6 have been characterized by single-crystal X-ray diffraction, elemental analysis, NMR spectroscopy, and EPR studies (for 4 and 5). The noninnocent α-diimine ligands exist as the dianionic form in compounds 2, 3, and 6 and as a monoanion in 4 and 5. Effects of the ligand substituents and the amount of the reducing agent on the structure of the product have been discussed.

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U2 - 10.1021/om2003199

DO - 10.1021/om2003199

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AN - SCOPUS:81755168944

SN - 0276-7333

VL - 30

SP - 6071

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JO - Organometallics

JF - Organometallics

IS - 22

ER -

Syntheses and structures of magnesium complexes with reduced α-diimine ligands

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