Synthesis, structure, and catalytic activity of new aluminum complexes formed with sterically bulky ligandsстатья
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Дата последнего поиска статьи во внешних источниках: 9 декабря 2015 г.
Аннотация:A reaction of pyridine related ligands containing two hydroxyalkyl groups, 2,6-(HO-Z-CH2)(2)C5H3N (Z is 1,1-cyclohexylene, 2,2-adamantylene) with trimethylaluminum and trimethoxyaluminum leads to three new aluminum complexes with the Me-Al or MeO-Al bond: 2,6-C5H3N(CH2-Z-O)(2)Al-X (Z is 1,1-cyclohexylene, X = Me (5), OMe (6); Z is 2,2-adamantylene, X = Me (7)). The structures of new derivatives were confirmed by NMR spectroscopy and elemental analysis. The structure of complex 5 was studied by X-ray diffraction analysis. Complex 5 is a dimer in the solid state due to the formation of a four-membered ring...Al-O...Al-O.... Complexes 5 and 6 were studied as initiators of the ring-opening polymerization of epsilon-caprolactone.