Electric Literature of 125572-95-4, In heterogeneous catalysis, the catalyst is in a different phase from the reactants. At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 125572-95-4, name is 2,2′,2”,2”’-(trans-Cyclohexane-1,2-diylbis(azanetriyl))tetraacetic acid hydrate. In an article£¬Which mentioned a new discovery about 125572-95-4
Stoichiometric reactions of metal hydroxycarbonates with the acid trans-1,2-cyclohexanediaminotetraacetic acid (H4CDTA) in water under reduced pressure yielded [Cu(H2CDTA)]¡¤H2O (I) and [Ni(H2CDTA)(H2O)]¡¤4H2O (II). Both compounds were characterized by TG-DTA analysis, spectral properties (IR, reflectance and RSE) and X-ray diffraction. In I the copper(II) atom exhibits a distorted square-base coordination (type 4+1) by chelation of one H2CDTA2- ligand through two N and two O (carboxylate) at the square base and one O (carboxylic) at the apex of the coordination polyhedron; a second carboxymethyl group of H2CDTA2- remains free. In II the H2CDTA2- chelating ligand also plays a quinquedentate role, but one water molecule achieves the slightly distorted octahedral coordination of the nickel(II) atom. Appropriate comparisons with the structure of [M(H2EDTA)(H2O)] (M = Ni, Cu) complexes suggest that the steric constraints in the H2CDTA ligand promotes the distorted five-coordination of the CuII chelate in I as well as the hydration of the nearly octahedral NiII derivative (II). The double protonation of the ligand H2CDTA2- is carried out over different kinds of chelate rings, G and R, for CuII and NiII M(CDTA) derivatives, respectively (where G and R, indicate metal-glycinate rings nearly coplanar or perpendicular to the plane MNN, respectively).
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.125572-95-4. In my other articles, you can also check out more blogs about 125572-95-4
Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI