76089-77-5, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 76089-77-5, Name is Cerium(III) trifluoromethanesulfonate, molecular formula is C3CeF9O9S3. In a Article£¬once mentioned of 76089-77-5
Synthesis and Molecular Structures of Hydrotris(dimethylpyrazolyl)borate Complexes of the Lanthanides
The reaction of lanthanide triflates with 2 equiv of potassium hydrotris(dimethylpyrazolyl)borate (TpMe2) gives good yields of complexes of composition Ln(TpMe2)2OTf. For La (2), Ce (3), Pr (4), and Nd (5) the complexes are seven-coordinate in the solid state with the triflate group coordinated to the metal in unidentate fashion. Complex 5 crystallizes in the monoclinic space group P21/c with a = 17.629(3) A, b = 12.740(2) A, c = 18.163(3) A, beta = 107.35(1), V = 3893(1) A3, Z = 4, and Rw = 0.0458. For the complexes of Y (1), Sm (6), Eu (7), Gd (8), Dy (9), Ho (10), and Yb (11), the smaller size of the metal ion leads to ejection of the triflate from the coordination sphere and the complexes are ionic in the solid state with a six-coordinate metal center. Complex 11 crystallizes in the monoclinic space group C2/m with a = 16.593(7) A, b = 13.671(5) A, c = 8.746(2) A, beta = 91.66(3), V = 1983(1) A3, Z = 2, and Rw = 0.0416. In solution, however, complex 6 adopts a seven-coordinate molecular structure with the triflate ion within the first coordination sphere.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. 76089-77-5, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 76089-77-5, in my other articles.
Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI