Journal of Coordination Chemistry p. 2015 - 2028 (2017)
Update date:2022-08-11
Topics:
Shi, Xinkui
Mao, Shanshan
Shen, Kesheng
Wu, Huilu
Tang, Xia
Two lanthanide (Sm and La) complexes with the Schiff base ligand bis(3-methoxysalicylidene)-3-oxapentane-1,5-diamine (Bod) have been synthesized and characterized by physico-chemical and spectroscopic methods. [Sm(Bod)(NO3)3] {bis(3-methoxysalicylidene)-3-oxapentane-1,5-diamine samarium(III) trinitrate} (1) is a discrete mononuclear species and [La(Bod)(NO3)3(DMF)]n {bis(3-methoxysalicylidene)-3-oxapentane-1,5-diamine dimethylformamide lanthanum(III) trinitrate}n (2) formed an inorganic coordination polymer. In the two complexes, the metal ions are both ten-coordinate and the geometric structure around the Ln(III) ions can be described as distorted hexadecahedral. An antioxidant assay in vitro shows that complexes 1 and 2 exhibit better scavenging activity than both the ligand and the usual antioxidants on hydroxyl and superoxide radicals. Under excitation at room temperature, a red shift in the fluorescence band of the ligand in the complexes compared with that of the free ligand can be attributed to coordination of the rare earth ions to the ligand. Furthermore, 1 produced characteristic Sm(III) luminescence, which indicates the ligand Bod is a good organic chelator to absorb energy and transfer it to the Sm3+ ion.
View MoreJinan Chenghuishuangda Chemical CO.,Ltd
website:http://www.jnchsd.com
Contact:+86-531-58897082
Address:No.2350, Kaituo Road, High-tech Development District, Jinan City, Shandong, China
WUHAN CHEMPROSPECT PHARMTECH CO., LTD
website:http://www.chemprospect.com
Contact:+86--27-84984898
Address:No. 2, Road, East Lake Hi-tech Development Zone, Wuhan, China
Contact:+1-416-493-6870
Address:Toronto, Canada
xi'an taima biological engineering co., ltd.
Contact:+8615619038117
Address:6 No,keji road xi'an city of china
Jiangxi Hessence Chemicals Co., Ltd.
Contact:+86 796 3511924
Address:Chengxi Industrial Park, Jishui County, Jiangxi Province 331600 China.
Doi:10.1021/acs.jmedchem.9b01554
(2020)Doi:10.1016/S0040-4039(97)00017-8
(1997)Doi:10.1021/j100079a025
(1994)Doi:10.1021/jo00810a021
(1971)Doi:10.1002/cplu.202000048
(2020)Doi:10.1039/ft9938903513
(1993)