Coordination Chemistry
... Coordination chemistry emerged from the work of Alfred Werner, a Swiss chemist who examined different compounds composed of cobalt(III) chloride and ammonia. Upon the addition of hydrochloric acid, Werner observed that ammonia could not be completely removed. He then proposed that the ammonia must b ...
... Coordination chemistry emerged from the work of Alfred Werner, a Swiss chemist who examined different compounds composed of cobalt(III) chloride and ammonia. Upon the addition of hydrochloric acid, Werner observed that ammonia could not be completely removed. He then proposed that the ammonia must b ...
EE3 2007 Hannes Jónsson Transition state theory A very important
... The most important theoretical approach in analysing the rate of chemical reactions is the socalled ’transition state theory’ (TST). It also goes under the name of ’absolute rate theory’ (ART) and, derived from a slightly different point of view, as ’activated complex theory’ (ACT). This is one of t ...
... The most important theoretical approach in analysing the rate of chemical reactions is the socalled ’transition state theory’ (TST). It also goes under the name of ’absolute rate theory’ (ART) and, derived from a slightly different point of view, as ’activated complex theory’ (ACT). This is one of t ...
Coordination properties of the diethyl (pyridin-3-ylmethyl)phosphonate ligand (3-pmpe)
... chains having the general formula {[M(3-pmpe)2(H2O)2](NO3)2}n (M = Cu, Ni, Co) and {[Zn(3-pmpe)2](NO3)2}n. The magnetic behaviour of the complexes is explained by very weak magnetic exchange between paramagnetic centres (Cu, Ni and Co) inside the chains. In summary, in the 3-pmpe ligand, a stericall ...
... chains having the general formula {[M(3-pmpe)2(H2O)2](NO3)2}n (M = Cu, Ni, Co) and {[Zn(3-pmpe)2](NO3)2}n. The magnetic behaviour of the complexes is explained by very weak magnetic exchange between paramagnetic centres (Cu, Ni and Co) inside the chains. In summary, in the 3-pmpe ligand, a stericall ...
Are diglycolamide ligands hard or soft Lewis bases?
... Pearson’s concept of Hard/Soft Acids/Bases (HSAB) in coordination chemistry – recapitulation Chemical hardness/softness of ligand molecules (L) can be considered in terms of the amount of electron density donated by the ligand (Lewis base) to the central metal ion (Lewis acid) in the complex. Hard ...
... Pearson’s concept of Hard/Soft Acids/Bases (HSAB) in coordination chemistry – recapitulation Chemical hardness/softness of ligand molecules (L) can be considered in terms of the amount of electron density donated by the ligand (Lewis base) to the central metal ion (Lewis acid) in the complex. Hard ...
MS PowerPoint - Catalysis Eprints database
... where, , the switching factor, reads 0 below the threshold and 1 above it. Refinement, the electronic parameter: Property = a(d) + b(θ – θth) + c(Ear) + d(p) + e where d is used for -donicity and p used for -acceptor property; Ear is for “aryl effect”. For reactions having a simple rate equa ...
... where, , the switching factor, reads 0 below the threshold and 1 above it. Refinement, the electronic parameter: Property = a(d) + b(θ – θth) + c(Ear) + d(p) + e where d is used for -donicity and p used for -acceptor property; Ear is for “aryl effect”. For reactions having a simple rate equa ...
Molecular structure and reactivity of the Group V metal oxides
... niobia catalysts have received much attention and several reviews can be found in the literature [3–6,9,28–30]. In contrast, no such corresponding publications are currently available about supported tantalum oxide catalysts and, of course, none exist for supported dubnium oxide catalysts. The revie ...
... niobia catalysts have received much attention and several reviews can be found in the literature [3–6,9,28–30]. In contrast, no such corresponding publications are currently available about supported tantalum oxide catalysts and, of course, none exist for supported dubnium oxide catalysts. The revie ...
(1/V m C) +
... technique that enhances Raman Scattering by molecules adsorbed on rough metal surfaces or by nanostructures such as plasmonic-magnetic silica nanotubes. The enhancement factor can be as much as 10 10 to 1011 which means the technique may detect single molecules. There are two theories electromagneti ...
... technique that enhances Raman Scattering by molecules adsorbed on rough metal surfaces or by nanostructures such as plasmonic-magnetic silica nanotubes. The enhancement factor can be as much as 10 10 to 1011 which means the technique may detect single molecules. There are two theories electromagneti ...
Anti-corrosive properties of new Benzothiazine derivative on mild steel
... Organic compounds containing polar groups by which the molecule can become strongly or specifically adsorbed on the metal surface constitute most organic inhibitors [1,2]. These inhibitors, which include the organic N, P, S, and OH groups, are known to be similar to catalytic poisons as they decreas ...
... Organic compounds containing polar groups by which the molecule can become strongly or specifically adsorbed on the metal surface constitute most organic inhibitors [1,2]. These inhibitors, which include the organic N, P, S, and OH groups, are known to be similar to catalytic poisons as they decreas ...