A Simple Model to Predict Preferable Aldol Products from Unsymmetrical Ketones Using Local Hard−Soft Acid−Base Concept

2001 ◽  
Vol 105 (10) ◽  
pp. 2117-2124 ◽  
Author(s):  
Ram Kinkar Roy ◽  
Nobuo Tajima ◽  
Kimihiko Hirao
Keyword(s):  
Simple Model ◽  
Acid Base ◽  
Base Concept ◽  
Soft Acid

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.

Quantitative evaluation of the HSAB [hard-soft acid-base] concept

1972 ◽  
Vol 11 (12) ◽  
pp. 3144-3145 ◽  
Author(s):  
Russell S. Drago ◽  
Robert A. Kabler
Keyword(s):  
Quantitative Evaluation ◽  
Acid Base ◽  
Base Concept ◽  
Soft Acid

Bulk-Phase Ion Conduction in Cocrystalline LiCl·N,N-Dimethylformamide: A New Paradigm for Solid Electrolytes Based upon the Pearson Hard–Soft Acid–Base Concept

2015 ◽  
Vol 27 (16) ◽  
pp. 5479-5482 ◽  
Author(s):  
Parameswara R. Chinnam ◽  
Rebecca N. Clymer ◽  
Abdel Aziz Jalil ◽  
Stephanie L. Wunder ◽  
Michael J. Zdilla
Keyword(s):  
Solid Electrolytes ◽  
Bulk Phase ◽  
New Paradigm ◽  
Acid Base ◽  
Ion Conduction ◽  
Base Concept ◽  
Soft Acid

scholarly journals Identifying Undergraduate Students’ Misconceptions in Understanding Acid Base Materials

2020 ◽  
Vol 9 (2) ◽  
pp. 276-286
Author(s):  
S. Mubarak ◽  
Y. Yahdi
Keyword(s):  
Undergraduate Students ◽  
Teaching And Learning ◽  
False Negative ◽  
Acid Base ◽  
Average Percentage ◽  
Base Materials ◽  
Reliability Score ◽  
Base Concept ◽  
Difficult Subject ◽  
Soft Acid

Students’ misconceptions have become phenomenon in teaching and learning, especially in chemistry which is considered as difficult subject. The objective of this study is to identify undergraduate student’s misconception profiles related to acid-base concepts in inorganic chemistry. This test was conducted with 15 item three tier multiple choices test. Data were identified descriptively and qualitatively. This test instruments are judged as valid with CVR score of 0,99 and mean of 1,73. Meanwhile, the reliability for this instrument varies for each tier combination; for tier one only, r11 was given reliability score for 0,93; for combination tier one and tier two, r11 score was 0,90, and for combination of all tiers, r11 score was 0,81. The test conducted revealed that average percentage of misconception in this test is 33.31% for all items. The highest misconception profile is 60,61% in item no.6 hard soft acid base concept. This includes 15,15% misconception false positive, 9,09% misconception false negative, and 36.36% specific misconception.

Influence of Alkaline Earth Cation Exchanged X-Zeolites Towards Ortho-Selectivity in Alkylation of Aromatics: Hard-Soft-Acid-Base Concept

2014 ◽  
Vol 2 (4) ◽  
pp. 221-229 ◽  
Author(s):  
Vijaykumar S. Marakatti ◽  
Peddy V.C. Rao ◽  
Nettem V. Choudary ◽  
Gandham Sri Ganesh ◽  
Gitesh Shah ◽  
...  
Keyword(s):  
Alkaline Earth ◽  
Acid Base ◽  
Alkaline Earth Cation ◽  
Base Concept ◽  
Earth Cation ◽  
X Zeolites ◽  
Soft Acid
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