An Alkali Metal−Crown Ether Complex Supported by a Keggin Anion through the Three Terminal Oxygen Atoms in a Single M3O13Triplet:  Synthesis and Characterization of [{Na(dibenzo-18-crown-6)(MeCN)}3{PMo12O40}]

2001 ◽  
Vol 40 (21) ◽  
pp. 5468-5471 ◽  
Author(s):  
Wansheng You ◽  
Enbo Wang ◽  
Yan Xu ◽  
Yangguang Li ◽  
Lin Xu ◽  
...  
Keyword(s):  
Crown Ether ◽  
Alkali Metal ◽  
Synthesis And Characterization ◽  
Keggin Anion ◽  
Crown Ether Complex ◽  
Ether Complex ◽  
Oxygen Atoms

NEW PHOTOMETRIC REAGENTS FOR ALKALI METAL IONS BASED ON CROWN ETHER COMPLEX FORMATION

1981 ◽  
Vol 10 (9) ◽  
pp. 1305-1306 ◽  
Author(s):  
Hiroshi Nakamura ◽  
Hideo Sakka ◽  
Makoto Takagi ◽  
Keihei Ueno
Keyword(s):  
Complex Formation ◽  
Crown Ether ◽  
Alkali Metal ◽  
Metal Ions ◽  
Alkali Metal Ions ◽  
Crown Ether Complex ◽  
Ether Complex

scholarly journals Reply to the ‘Comment’ on “Lewis acidic ionic liquids of crown ether complex cations: preparation and applications in organic reactions” by M. Swadźba-Kwaśny, RSC Adv., 2017, 7, DOI: 10.1039/c7ra05921c

RSC Advances ◽  
2017 ◽  
Vol 7 (85) ◽  
pp. 53686-53688
Author(s):  
Jinyuan Wang ◽  
Panpan Zhou ◽  
Huanwang Jing
Keyword(s):  
Ionic Liquids ◽  
Crown Ether ◽  
Alkali Metal ◽  
Metal Chloride ◽  
Organic Reactions ◽  
Alkali Metal Chloride ◽  
Crown Ether Complex ◽  
Acidic Ionic Liquids ◽  
Ether Complex

We published recently in RSC Advances a paper, reporting a new group of Lewis acidic ionic liquids that were prepared by the combination of 18-crown-6, alkali metal chloride (NaCl or KCl) and metal chloride (FeCl3, AlCl3, ZnCl2) and applied in organic reactions as catalysts.

ChemInform Abstract: Crown Ether Complex Cation Ionic Liquids: Preparation and Applications in Organic Reactions.

ChemInform ◽  
2011 ◽  
Vol 42 (50) ◽  
pp. no-no
Author(s):  
Yingying Song ◽  
Huanwang Jing ◽  
Bo Li ◽  
Dongsheng Bai
Keyword(s):  
Ionic Liquids ◽  
Crown Ether ◽  
Complex Cation ◽  
Organic Reactions ◽  
Crown Ether Complex ◽  
Ether Complex

The extraction of alkali metal picrates by polyurethane foam using crown ether

1981 ◽  
Vol 59 (10) ◽  
pp. 1490-1496 ◽  
Author(s):  
Anjum S. Khan ◽  
W. G. Baldwin ◽  
A. Chow
Keyword(s):  
Crown Ether ◽  
Alkali Metal ◽  
Polyurethane Foam ◽  
Dissociation Constants ◽  
Extraction Constant ◽  
Ion Pair ◽  
Constant Sequence ◽  
Extraction Constants ◽  
The Stability ◽  
Ether Complex

The distribution of alkali metal picrates between water and polyurethane foam was studied in the presence of dicyclohexyl 18-crown-6 (DCHC-6). The extraction constants and dissociation constants for the ion pair (MCrA) in polyurethane foam were determined. The extraction constant sequence of the alkali metal ions with DCHC-6 is K+ > Rb+ > Cs+ > Na+ and mainly depends on the stability of the alkali metal – crown ether complex.

scholarly journals Synthesis and Characterization of Super Bulky β-Diketiminato Group 1 Metal Complexes

Inorganics ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 72
Author(s):  
Dafydd D. L. Jones ◽  
Samuel Watts ◽  
Cameron Jones
Keyword(s):  
Nmr Spectroscopy ◽  
Alkali Metal ◽  
Metal Complexes ◽  
Oxidation State ◽  
Synthesis And Characterization ◽  
X Ray Crystallography ◽  
Low Oxidation State ◽  
Bulky Ligand ◽  
Group 1

Sterically bulky β-diketiminate (or Nacnac) ligand systems have recently shown the ability to kinetically stabilize highly reactive low-oxidation state main group complexes. Metal halide precursors to such systems can be formed via salt metathesis reactions involving alkali metal complexes of these large ligand frameworks. Herein, we report the synthesis and characterization of lithium and potassium complexes of the super bulky anionic β-diketiminate ligands, known [TCHPNacnac]− and new [TCHP/DipNacnac]− (ArNacnac = [(ArNCMe)2CH]−) (Ar = 2,4,6-tricyclohexylphenyl (TCHP) or 2,6-diisopropylphenyl (Dip)). The reaction of the proteo-ligands, ArNacnacH, with nBuLi give the lithium etherate compounds, [(TCHPNacnac)Li(OEt2)] and [(TCHP/DipNacnac)Li(OEt2)], which were isolated and characterized by multinuclear NMR spectroscopy and X-ray crystallography. The unsolvated potassium salts, [{K(TCHPNacnac)}2] and [{K(TCHP/DipNacnac)}∞], were also synthesized and characterized in solution by NMR spectroscopy. In the solid state, these highly reactive potassium complexes exhibit differing alkali metal coordination modes, depending on the ligand involved. These group 1 complexes have potential as reagents for the transfer of the bulky ligand fragments to metal halides, and for the subsequent stabilization of low-oxidation state metal complexes.

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