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所属单位：材料科学与技术学院

发表刊物：APPLIED ORGANOMETALLIC CHEMISTRY

关键字：homoleptic lanthanide complexes para-toluene sulfonamides polymerization

摘要：A series of para-toluene sulfonamide ligands [TsNHPr-i(HL1), TsNHBu-t(HL2), TsNHPh(HL3), TsNHPhMe-p(HL4), TsNHPhOMe-p(HL5)] were synthesized by amidation using para-toluene sulfonyl chloride reacting with different primary amines. A series of homoleptic lanthanide complexes (Ln L-3, 1-10) (Ln = La, L = L-1 (1), Ln = Gd, L = L-2 (2), Ln = La, L = L-2 (3), Ln = Gd, L = L-2(4), Ln = La, L = L-3 (5), Ln = Gd, L = L-3 (6), Ln = La, L = L-4 (7), Ln = Gd, L = L-4(8), Ln = La, L = L-5 (9), Ln = Gd, L = L-5 (10)) were prepared by amine elimination reactions of the ligands with Ln[N(SiMe3)(2)](3) (Ln = La, Gd). Complexes 1, 3, 5, 7 and 9 were all characterized by NMR spectra, and the structures of complex 3 was determined by single-crystal X-ray diffraction. Complex 3 crystallizes a binuclear cluster, consisting of two La3+ and six (TsNBu-t)(-) anions. Three (TsNBu-t)(-) anions are chelating to each La3+ as bidentate model with O and N forming three-membered chelate rings; one of three anions is bridging to another La3+ via oxygen. All complexes were characterized using elemental analysis and infrared spectra. The catalytic properties of complexes 1-10 for the ring-opening polymerization of epsilon-caprolactone were studied and the results showed that all complexes are efficient initiators for this ring-opening polymerization reaction.

ISSN号：0268-2605

是否译文：否

发表时间：2017-12-01

合写作者：Wang, Li-Jun,Peng, Ling,Cen, Bo,Wang, Yu-Long,Tao, Xian

通讯作者：沈应中