名称:
Fac-tricarbonyl(pentylcarbonato)(α-diimine)rhenium complexes: One-pot synthesis, characterization, fluorescence studies, and cytotoxic activity against human MDA-MB-231 breast, CCl-227 colon and BxPC-3 pancreatic carcinoma cell lines
摘要:
A series of pentylcarbonato complexes of the general formula fac-(CO)(3)(alpha-diimine)ReOC(O)O(CH2)(4)CH3 (1-7) was synthesized from the reactions of Re-2(CO)(10) with the corresponding alpha-diimines in refluxed 1-pentanol while CO2 was bubbled through the solutions. The alpha-diimines in 1-7 are 2,2'-bipyridyl, 1,10-phenanthroline, 5-methyl-1,10-phenanthroline, neocuproin, 5,6-dimethyl-1,10-phenanthroline, bathophenanthroline, and bathocuproin, respectively. Complexes 1-7 have been characterized spectroscopically and by elemental analyses. Additionally, 1 and 6 have been characterized in the solid state by X-ray crystallography. The electronic absorption spectra of 1-7 exhibit metal-to-ligand charge-transfer (MLCT) absorption maxima in the range 343-371 nm in acetonitrile. The emission maxima range from 513 to 532 nm. The average life-time and quantum yield are 1.074 ns and 0.011 respectively. Cytotoxicity studies using a few of these pentylcarbonato complexes reveal that the complexes are cytotoxic against BxPC-3 pancreatic, CCL-227 colon, and MDA-MB-231 breast cancer cell lines. (C) 2012 Elsevier B.V. All rights reserved.