of explosive materials can be explained on basis of HSAB theory. Ralph Pearson introduced the HSAB principle in the early 1960s as an attempt to unify...
19 KB (2,118 words) - 13:31, 25 October 2024
Acid–base reaction (redirect from Arrhenius theory)
and base are, with the Brønsted–Lowry theory being a subset of what acids and bases are, and the Arrhenius theory being the most restrictive. The concept...
36 KB (4,969 words) - 08:10, 10 September 2024
Marcus theory — Lewis theory (successor to Brønsted–Lowry acid–base theory) — HSAB theory — Debye–Hückel theory — Thermodynamic theory of polymer elasticity...
38 KB (4,356 words) - 13:13, 6 November 2024
Lewis acids and bases (redirect from Lewis Theory)
Brønsted–Lowry acid. The classification into hard and soft acids and bases (HSAB theory) followed in 1963. The strength of Lewis acid-base interactions, as measured...
22 KB (2,754 words) - 17:47, 24 October 2024
choice of reactants is guided by a solubility chart or lattice energy. HSAB theory can also be used to predict the products of a metathesis reaction. Salt...
7 KB (897 words) - 16:39, 5 May 2024
at least two properties must be considered. For Pearson qualitative HSAB theory, the two properties are hardness and strength, while for Drago's quantitative...
4 KB (523 words) - 03:42, 2 June 2024
Acid Base (HSAB) theory, the bare hydron is an infinitely hard Lewis acid. The hydron plays a central role in Brønsted–Lowry acid–base theory: a species...
9 KB (1,052 words) - 23:39, 27 October 2024
strength at least two properties must be considered. For the qualitative HSAB theory the two properties are hardness and strength while for the quantitative...
19 KB (2,596 words) - 17:05, 11 October 2024
assumptions of frontier molecular orbital theory (i.e., theory of HOMO–LUMO interactions) and hard soft acid base (HSAB) theory. Conceptually, it highlights the...
6 KB (806 words) - 09:48, 4 November 2024
referred to as a Lewis base. As a refinement of acid-base interactions, the HSAB theory takes into account polarizability and size of ions. Subdivisions of inorganic...
29 KB (3,220 words) - 00:35, 17 November 2024
Stability constants of complexes (section Theory)
phosphines than with amines. Later, Pearson proposed the theory of hard and soft acids and bases (HSAB theory). In this classification, class A metals are hard...
60 KB (7,604 words) - 15:10, 15 November 2024
containing ligating atoms other than the lightest of their Periodic Group." HSAB theory, hard and soft (Lewis) acids and bases Weisstein, Eric Wolfgang (ed.)...
2 KB (242 words) - 10:33, 2 August 2024
so strongly with mercury compounds. According to hard/soft acid/base (HSAB) theory, sulfur is a relatively soft (polarizable) atom. This explains the tendency...
35 KB (3,886 words) - 02:58, 4 July 2024
reaction. This quantitative model is often discussed with the qualitative HSAB theory, which also seeks to rationalize the behavior of diverse acids and bases...
22 KB (2,134 words) - 14:30, 20 September 2024
(ISBN 978-0471035589). A qualitative theory of hard and soft acids and bases (HSAB) was proposed in 1963 in an attempt to unify the theories of reactivity in inorganic...
5 KB (447 words) - 09:27, 30 June 2024
4-addition is suppressed. The selectivity can be explained in terms of the HSAB theory: carbonyl groups require hard nucleophiles for 1,2-addition. The hardness...
3 KB (334 words) - 23:45, 21 March 2024
reagents than with sulfonium reagents. One explanation based on the HSAB theory states that it is because sulfoxonium reagents have a less concentrated...
22 KB (2,314 words) - 16:34, 26 September 2024
Lewis acids such as I2, phenol, and Al(CH3)3. Ammonia is a hard base (HSAB theory) and its E & C parameters are EB = 2.31 and CB = 2.04. Its relative donor...
139 KB (14,988 words) - 17:19, 20 November 2024
at least two properties must be considered. For Pearson's qualitative HSAB theory the two properties are hardness and strength while for Drago's quantitative...
47 KB (5,956 words) - 18:26, 8 July 2024
polarisability, allow GaCl3 to behave as a "soft acid" in terms of the HSAB theory. The strength of the bonds between gallium halides and ligands have been...
15 KB (1,386 words) - 13:22, 12 July 2024
often stated to be related to the hardness of the element, within the HSAB theory (hard and soft (Lewis) acids and bases), but it has been shown that oxophilicity...
5 KB (583 words) - 06:47, 15 January 2024
charge, bonded to a small negative ion with a high charge. More generally HSAB theory can be applied, whereby the compounds with the most ionic character are...
63 KB (6,942 words) - 00:48, 22 October 2024
strengths) and that two parameters (or two properties) are needed (see HSAB theory and ECW model) to define acid and base strengths and that single parameter...
7 KB (973 words) - 13:09, 17 August 2024
development of coordination chemistry. Hard metal cations, as classified by HSAB theory, tend to form N-bonded complexes (isothiocyanates), whereas class B or...
15 KB (1,708 words) - 09:37, 11 November 2024
O-bonded is an "L-X ligand", akin to bidentate carboxylate. With respect to HSAB theory, the N bonding mode is more common for softer metal centers. The O and...
9 KB (1,050 words) - 15:50, 30 May 2024
bonds between the electron pair donors and the hydrogen atoms of water. HSAB theory describes water as both a weak hard acid and a weak hard base, meaning...
89 KB (9,582 words) - 13:48, 4 November 2024
oxygen or nitrogen than with second-row sulfur or phosphorus. In terms of HSAB theory Zn2+ is a hard acid. In aqueous solution an octahedral complex, [Zn(H2O)6]2+...
22 KB (2,626 words) - 15:18, 21 April 2024
a pseudohalide (X). Carboxylates are classified as hard ligands, in HSAB theory. Structures of Selected Metal Acetates Basic ferric acetate Silver acetate...
14 KB (1,465 words) - 01:07, 3 October 2024
Alpha effect (section Theory)
the hydroperoxide anion. In 1962, Edwards and Pearson (the latter of HSAB theory) introduced the phrase alpha effect for this anomaly. He offered the...
12 KB (1,415 words) - 21:56, 2 October 2024
explain the different behavior of the intermediate. In terms of the HSAB-theory an explanation might be given. In 1975 Masamune calculated in the non-substituted...
27 KB (2,648 words) - 09:20, 8 November 2024