Crystal structure and catalytic activity of tetrakis(μ 2 -ethyl 2,6-di- tert -butyl-4-methylphenyl phosphato-κ2 O: O ′)bis(ethyl 2,6-di- tert -butyl-4-methylphenyl phosphato-κ2 O, O ′)dilutetium n -heptane disolvate
The title complex, [Lu2(C17H28O4P)6]·2C7H16, was formed in the reaction between potassium 2,6-di-tert-butyl-4-methylphenyl ethyl phosphate, [K(2,6- t Bu2-4-MeC6H2-O)(EtO)PO2], and LuCl3(H2O)6 in water, followed by vacuum drying and recrystallization from heptane. Its crystal structure has triclinic (P-1) symmetry at 120 K. The lutetium tris(phosphate) complex has a binuclear [Lu2(μ-OPO)4] core and the organophosphate ligand exhibits κ2 O,O′ terminal and μ2-κ1 O:κ1 O′ bridging coordination modes with the LuIII ion being sixfold coordinated. The complex is of interest as a precatalyst in the acrylonitrile polymerization process and displays good catalytic activity under mild conditions.
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