4H,4η'H-2,2'-双色烯-4,4'-二酮(BCDO)与钴(Ⅱ)配合物的合成与性能

Synthesis and properties of Co( Ⅱ) complex with BCDO Ligand

以有机分子自由基4H,4'H-2,2'-双色烯-4,4'二酮(以下简称BCDO)为配体,在混合溶剂氯仿-乙醇存在下,加入一定物质的量的CoCl2·6H2O,加热回流一定时间,通过配位反应成功得到新型的BCDO-Co(Ⅱ)配合物.所得配合物利用1H-NMR、IR、HR-MS对其结构进行了表征,结果表明配体中的烯醇羟基氧和醚氧原子与金属离子相互作用,使得BCDO与Co2+按照摩尔比1∶2配位,推测了所得BCDO-Co(Ⅱ)配合物的可能结构,同时对配合物的紫外吸收光谱和荧光性能进行了测定.

A new complex of BCDO-Co（ Ⅱ）（ BCDO = 4H,4＇H-2,2＇-bichromene-4,4＇-dione） was synthesized from the reaction of CoCl2·6H2O and BCDO in chloroform-ethanol under reflux. The synthesized product was characterized by means of1H-NMR,IR and HR-MS. The IR spectra indicated that the oxygen atom of enolic hydroxyl group and the ethereal oxygen atom in BCDO could bind to Co2 ＋and form complex BCDO-Co（ Ⅱ）,and HR-MS showed that the molar ratio of BCDO to Co2 ＋was 1∶2 when coordinated. The probable structure of complex BCDO-Co（ Ⅱ） was determined by experimental facts,and the ultraviolet absorption speetra and fluorescence property of complex BCDO-Co（ Ⅱ） were tested.