Luminescent property and catalytic activity of Ru(II) carbonyl complexes containing N, O donor of 2-hydroxy-1-naphthylideneimines
作者:M. Sivagamasundari、R. Ramesh
DOI:10.1016/j.saa.2006.07.010
日期:2007.5
(where E=P; B=PPh(3), py or pip: E=As; B=AsPh(3)) in benzene afforded new stable ruthenium(II) carbonyl complexes of the general formula [Ru(Cl)(CO)(EPh(3))(B)(L)] (L=anion of bidentate Schiff bases). The structure of the new complexes was investigated using elemental analyses, spectral (FT-IR, UV-vis and (1)H NMR) and electrochemical studies and is found to be octahedral. All the metal complexes exhibit
螯合配体(通过2-羟基-1-萘醛与各种伯胺的缩合获得)与[RuHCl(CO)(EPh(3))(2)(B)](其中E = P; B = PPh(3),py或pip:苯中的E = As; B = AsPh(3))得到通式[Ru(Cl)(CO)(EPh(3))的新的稳定的钌(II)羰基络合物(B)(L)](L =双齿席夫碱的阴离子)。使用元素分析,光谱(FT-IR,UV-vis和(1)H NMR)和电化学研究对新配合物的结构进行了研究,结果发现它们是八面体的。所有的金属络合物在可见光区域均表现出特征性的MLCT吸收和发光带。基于金属离子周围的配体环境解释了钌(II)配合物的发光效率。在N-甲基吗啉-N-氧化物(NMO)作为氧源的情况下,这些络合物催化伯醇和仲醇氧化为相应的羰基化合物。提出了形成高价Ru(IV)= O物种作为催化中间体的方法。
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