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Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent£¬ category: catalyst-ligand, Which mentioned a new discovery about 16858-01-8
Structural properties of cationic molybdenum and tungsten allyl derivatives
Cationic allyldicarbonyl derivatives of molybdenum and tungsten of the types PF6 (M = W, allyl = C3H5 or 2-MeC3H4, L3 = bis(2-pyridylmethyl)amine, bpma) and PF6 (M = Mo or W, allyl = C3H5 or 2-MeC3H4, L4 = tris(2-pyridylmethyl)amine, tpma) have been prepared, and their isomerism and dynamic behaviour in solution examined.In the solid state, PF6 (1a) exhibits an unsymmetric, and PF6 (3) a symmetric, orientation of the N-donor set, which comprises two pyridyl rings and the central, exocyclic N of each ligand, with respect to the ?-allyl group.The third bipyridyl ring of tpma in the latter complex is orientated away from the metal centre in the solid, but undergoes rapid exchange with N-donors within the coordination sphere at elevated temperatures in solution.Neither of the 2-MeC3H4 analogues of 3 are dynamic under similar conditions, whereas the 2-MeC3H4 analogue of 1 undergoes a facile trigonal twist rearrangement.
I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 16858-01-8, help many people in the next few years.category: catalyst-ligand
Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI