Solvation and redox properties of [Co(en)3]3+-[Co(en)3]2+ system

1980 ◽  
Vol 45 (2) ◽  
pp. 335-338 ◽  
Author(s):  
Adéla Kotočová ◽  
Ulrich Mayer
Keyword(s):  
Hydrogen Bond ◽  
Lewis Acid ◽  
Specific Interaction ◽  
Redox Properties ◽  
Solvation Effect ◽  
Interacting Particles ◽  
Acid Base ◽  
Polar Solvents ◽  
Oxidation Reduction ◽  
Solvent Molecules

The solvation effect of a number of nonaqueous polar solvents was studied on the oxidation-reduction properties of the [Co(en)3]3+-[Co(en)3]2+ system. Interactions of these ions with the solvent molecules are discussed in terms of their coordination, which is accompanied by a specific interaction of the Lewis acid-base type, namely formation of a hydrogen bond between the interacting particles. This is the main controlling factor of the redox properties of the studied system.

Efficient and reversible absorption of ammonia by cobalt ionic liquids through Lewis acid–base and cooperative hydrogen bond interactions

2018 ◽  
Vol 20 (9) ◽  
pp. 2075-2083 ◽  
Author(s):  
Shaojuan Zeng ◽  
Lei Liu ◽  
Dawei Shang ◽  
Jianpeng Feng ◽  
Haifeng Dong ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Lewis Acid ◽  
Acid Base ◽  
Highly Efficient ◽  
Hydrogen Bond Interactions

Cobalt ionic liquids with highly efficient and reversible absorption of NH3 through Lewis acid–base and hydrogen bond interactions were designed.

Studies of the solvent effect on the chemical shifts in n.m.r. spectroscopy. II. Solutions of succinic anhydride, maleic anhydride, and the N-substituted imides

1967 ◽  
Vol 45 (16) ◽  
pp. 1829-1835 ◽  
Author(s):  
Taku Matsuo
Keyword(s):  
Maleic Anhydride ◽  
Succinic Anhydride ◽  
Benzene Solution ◽  
Chemical Shifts ◽  
Specific Interaction ◽  
Lone Pair ◽  
Polar Solvents ◽  
Low Field ◽  
Solvent Molecules ◽  
Lone Pair Electrons

Proton magnetic resonance spectra of succinic anhydride, maleic anhydride, and the N-ethyl- or N-(p-chlorophenyl)-imides have been investigated in various media. In benzene solution, a specific interaction between the π-electron cloud of the solvent and the moiety of the protons alpha to the carbonyl groups is suggested. The strength of the interaction is considered to be in the order of (i) maleic anhydride, (ii) succinic anhydride, and (iii) the N-substituted imides. The interaction may be due to both the large electron affinity and the polarization of the carbonyl group. The low-field shifts in strongly polar solvents, such as acetone or dimethyl sulfoxide, are ascribed to the preferential associations of the lone-pair electrons of polar solvents to the electron-deficient sites of solute molecules. In some cases, however, the solvent effects on the chemical shifts are opposite to those expected from the donor properties of the solvents. An explanation may be available from the anisotropic magnetic susceptibilities of the polar groups of the solvent molecules.

B-Doped and NH2-functionalized SBA-15 with hydrogen bond donor groups for effective catalysis of CO2 cycloaddition to epoxides

2020 ◽  
Vol 7 (19) ◽  
pp. 3636-3645 ◽  
Author(s):  
Yifei Ye ◽  
Dazhi Li ◽  
Ping Xu ◽  
Jianmin Sun
Keyword(s):  
Hydrogen Bond ◽  
Lewis Acid ◽  
Catalytic Performance ◽  
Solvent Free ◽  
The Novel ◽  
Hydrogen Bond Donor ◽  
Acid Base ◽  
Solvent Free Conditions ◽  
Base Properties

The novel B-SBA-15-NH2 catalyst with Lewis acid–base properties and hydrogen bond donor groups exhibited good catalytic performance for CO2 conversion under metal- and solvent-free conditions.

Chalcogen versus Dative Bonding in [SF3]+ Lewis Acid–Base Adducts: [SF3(NCCH3)2]+, [SF3(NC5H5)2]+, and [SF3(phen)]+ (phen = 1,10-phenanthroline)

2021 ◽  
Vol 60 (6) ◽  
pp. 3893-3901
Author(s):  
Douglas Turnbull ◽  
Praveen Chaudhary ◽  
Paul Hazendonk ◽  
Stacey D. Wetmore ◽  
Michael Gerken
Keyword(s):  
Lewis Acid ◽  
Acid Base

scholarly journals Lewis acid / Base-free Strategy for the Synthesis of 2-Arylthio and Selenyl Benzothiazole / Thiazole and Imidazole

2021 ◽  
Vol 27 (1) ◽  
pp. 17-23
Author(s):  
Guniganti Balakishan ◽  
Gullapalli Kumaraswamy ◽  
Vykunthapu Narayanarao ◽  
Pagilla Shankaraiah
Keyword(s):  
Lewis Acid ◽  
Bond Formation ◽  
Acid Base ◽  
Mechanistic Pathway ◽  
Wide Range ◽  
Acid And Base ◽  
Lewis Acid And Base ◽  
Sulfur Bond

Abstract A Cu(II)-catalyzed Csp2-Se and Csp2-Sulfur bond formation was achieved with moderate to good yields without the aid of Lewis acid and base. The reaction is compatible with a wide range of heterocycles such as benzothiazole, thiazole, and imidazole. Also, this typical protocol is found to be active in thio-selenation via S-H activation. Additionally, we proposed a plausible mechanistic pathway involving Cu(III) putative intermediate.

scholarly journals Novel hydrogen chemisorption properties of amorphous ceramic compounds consisting of p-block elements: exploring Lewis acid-base Al–N pair site formed in-situ within polymer-derived silicon-aluminum-nitrogen-based system

2021 ◽  
Author(s):  
Shotaro Tada ◽  
Norifumi Asakuma ◽  
Shiori Ando ◽  
Toru Asaka ◽  
Yusuke Daiko ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Active Site ◽  
Hydrogen Chemisorption ◽  
Acid Base ◽  
Polymer Derived Ceramics ◽  
System P ◽  
Ceramic Compounds ◽  
The Relationship

This paper reports on the relationship between the H2 chemisorption properties and reversible structural reorientation of the possible active site around Al formed in-situ within polymer-derived ceramics (PDCs) based on...

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