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HSAB theory
Also known as the Pearson acid base concept, HSAB is widely used in ... 'Hard' applies to species which are small, have high charge states (the ... the sensitivity and performance of explosi... |
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Hard and Soft Acids and Bases - Chemwiki
Lewis bases can be divided into two categories: ... Metal ions with the highest affinities for hard bases are hard acids, whereas metal ... consequently, they are relatively nonpolarizable and have higher charge-to-radius ratios. ... . Commons Attribution-Noncommercial-Share Alike 3.0 United States License. |
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Introduction to Inorganic Chemistry/Acid-Base... - Wikibooks
Lewis acids and bases can be classified by designating them as hard or soft. ... " Hard" acids and bases have a high charge (positive for ... ratio along with higheroxidation states. |
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Why are the valence electrons of an atom the only electrons likely to be involved in bonding to other atoms? |
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Applications of Hard-Soft Acid-Base theory | Chemical and physical ...
The HSAB (Hard Soft Acid Base) theory categorizes chemical species as acids or bases and ... High electronegativity (base); High charge density; High oxidationstate. A hard acid or base may have some or all of these characteristics, but the hard-soft distinction ... .. The HSAB theory can be used to predict solubility trends. |
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Hard & Soft Acid & Base Considerations - CSB | SJU Employees ...
Do certain metal ions have a preference for certain donor atoms? ... The principle of hard and soft acids and bases (HSAB) is useful here. ... For example, higheroxidation state Fe3+ may more commonly have aspartate or glutamate donors. |
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The d-Block Elements - 2012 Book Archive
Because all the d-block elements are metals, they do not have the extreme variability in ... .. The acid–base character of transition-metal oxides depends strongly on the ... Finally, because oxides of transition metals in high oxidationstates are ... . as TiC), and borides (such as TiB 2), all of which are hard, high- melting solids. |
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Lecture 13
The properties of the main group elements can be understood in terms of a few simple concepts. These are: Hard and soft acids and bases; The ionic radius of the Lewis acid ... Larger metal ions tend to have higher coordination numbers. ... Pb, Bi) to have as their most stable oxidation states those that are two less than the ... |
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hsab - Hardness and softness are terms used to describe which ...
What do hardness and softness mean? ... increases with decreasing radius and increasing oxidation state. ... 3 are hard bases due to their small size and high charge density/low polarizability of the ions. BF 3 therefore readily forms Lewis acid-base adducts with fluoride ... . Has Superman ever said, "Ouch! |
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Why the ligand with nitrogen donor atoms are so effective in ...
We can see most of the complexes published recently for showing catalytic activity towards C-H bond activation, ... However, many reports are there using oxygen as coordinating group to get higher oxidation state of metals. ... Hard-Soft acid base theory. Higher oxidation states are harder acids, Nitrogens are harder bases. |