Infrared and Mössbauer Spectral Studies on Some Tin(IV) Complexes: A Qualitative Correlitation with the Hard and Soft Acid-Base Theory

1974 ◽  
Vol 7 (12) ◽  
pp. 637-643 ◽  
Author(s):  
William T. Ayers ◽  
Michael F. Farona ◽  
David L. Uhrich
Keyword(s):  
Spectral Studies ◽  
Acid Base ◽  
Base Theory ◽  
Soft Acid

Application of hard and soft acid base theory to uncover Lewis bases’ destructiveness to UiO-66 type metal organic frameworks in aqueous solutions

2021 ◽  
Author(s):  
Liangjie Wang ◽  
Juan Li ◽  
Luyao Cheng ◽  
Yonghui Song ◽  
Ping Zeng ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Aqueous Solutions ◽  
Metal Organic Frameworks ◽  
Acid Base ◽  
Lewis Bases ◽  
Base Theory ◽  
Metal Organic ◽  
The Stability ◽  
Soft Acid

Lewis bases (L-bases) in wastewater, such as F- and PO43-, are destructive to the stability of MOFs which have attracted increasing attentions in wastewater treatment field as adsorbents and catalysts....

scholarly journals A Tuned Lewis Acidic Catalyst Guided by Hard-soft Acid-base Theory to Promote N2 Electroreduction

2021 ◽  
Author(s):  
Yongwen Ren ◽  
Chang Yu ◽  
Xuedan Song ◽  
Fengyi Zhou ◽  
Xinyi Tan ◽  
...  
Keyword(s):  
Reduction Reaction ◽  
Ambient Conditions ◽  
Renewable Electricity ◽  
Acid Base ◽  
Acidic Catalyst ◽  
Bosch Process ◽  
Base Theory ◽  
Soft Acid

Electrocatalytic N2 reduction reaction (NRR) to ammonia (NH3) driven by intermittent renewable electricity under ambient conditions offers an alternative to the energy-intensive Haber−Bosch process. However, as a distinct core of...

Tin-halogen stretching frequencies and the hard and soft acid-base theory

1975 ◽  
Vol 14 (8) ◽  
pp. 2020-2021 ◽  
Author(s):  
Michael F. Farona
Keyword(s):  
Acid Base ◽  
Base Theory ◽  
Soft Acid

Acid-base properties of metals and glasses of Na2O.P2O5-xB2O3 system

1984 ◽  
Vol 49 (10) ◽  
pp. 2355-2362 ◽  
Author(s):  
Juraj Leško ◽  
Marie Dorušková ◽  
Jan Tržil
Keyword(s):  
Boron Oxide ◽  
A Priori ◽  
Optical Basicity ◽  
Galvanic Cell ◽  
Acid Base ◽  
Tetrahedral Configuration ◽  
Relative Basicity ◽  
Base Theory ◽  
Base Properties

Boron oxide in the Na2O.P2O5-x B2O3 system behaves as a Lux base. Its addition to Na2O.P2O5 brings about transformation of a Co(II) indicator from octahedral to tetrahedral configuration, increase in the optical basicity ΛPb(II), increase in the relative basicity of the melt as determined by means of a galvanic cell, and depolymerization reactions releasing PO43- ions. In the Na2O-B2O3 system free of P2O5, boron oxide behaves as a Lux acid. The amphoretic nature of B2O3 is explained in terms of Lux's acid-base theory extended in analogy with the protolysis theory. The theoretical optical basicity values do not indicate the amphoretic behaviour of B2O3 because in this approach boron oxide is a priori regarded as more acidic than Na2O.P2O5.

An analysis of the factors contributing to the regioselectivity observed in the opening of oxiranes

1980 ◽  
Vol 58 (3) ◽  
pp. 302-306 ◽  
Author(s):  
Margaret M. Kayser ◽  
Peter Morand
Keyword(s):  
Oxygen Atom ◽  
Ring Opening ◽  
Oxirane Ring ◽  
Epoxide Ring ◽  
Acid Base ◽  
Epoxide Ring Opening ◽  
Soft Acid ◽  
Hsab Theory

The regioselectivity of epoxide ring opening can be analyzed in terms of hard–soft acid–base (HSAB) theory. The coordination of the hard acid with the oxygen atom of the oxirane ring produces a "pulling effect" which determines the direction of the ring opening. In the absence of a strong "pulling effect" the "pushing effect" of the approaching base is examined and the consequences of relative softness or hardness of the nucleophile on the regioselectivity of the ring opening are discussed.

scholarly journals Imparting gas selective and pressure dependent porosity into a non-porous solid via coordination flexibility

2019 ◽  
Vol 6 (9) ◽  
pp. 1883-1891 ◽  
Author(s):  
Shyamapada Nandi ◽  
Phil De Luna ◽  
Rahul Maity ◽  
Debanjan Chakraborty ◽  
Thomas Daff ◽  
...  
Keyword(s):  
Porous Solid ◽  
Acid Base ◽  
Base Concept ◽  
Soft Acid

Using a simple hard–soft acid–base concept we have deliberately designed gas-specific and pressure dependent porosity into a non-porous solid via coordination flexibility.

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