Study of the structure, prooxidative, and cytotoxic activity of some chelate copper(II) complexes
作者:Vladimir P. Petrović、Marko N. Živanović、Dušica Simijonović、Jelena Đorović、Zorica D. Petrović、Snežana D. Marković
DOI:10.1007/s11696-017-0200-1
日期:2017.11
The six chelate N,O-copper(II) complexes were synthesised starting from salicylaldehyde anil Schiff bases, as ligands. Their structure is elucidated using experimental and theoretical tools. In vitro biological activities, i.e. cytotoxic and prooxidative effects against human epithelial mammary gland/breast metastatic carcinoma MDA-MB-231, epithelial colorectal carcinoma HCT-116, and foetal lung fibroblast
Some dichloro Schiff base complexes of molybdenum(IV)
作者:Chi-Tat Kan
DOI:10.1039/dt9820002309
日期:——
A series of molybdenum(IV) complexes of the type [MoCl2L2], where HL represents N-phenylsalicylideneimine and its derivatives, have been synthesised by reaction of [MoCl2(acac)2](acac = acetylacetonate) or [MoCl4(MeCN)2] with related Schiff bases. The spectroscopic properties of these six-co-ordinate d2 complexes are discussed.
Novel lithium Schiff-base cluster complexes as electron injectors: synthesis, crystal structure, thin film characterisation and their performance in OLEDs
作者:Poopathy Kathirgamanathan、Sivagnanasundram Surendrakumar、Juan Antipan-Lara、Seenivasagam Ravichandran、Y. F. Chan、Vincent Arkley、Subramanium Ganeshamurugan、Muttulingham Kumaraverl、Gnanamoly Paramswara、Arumugam Partheepan、Vanga R. Reddy、Daniel Bailey、Alexander J. Blake
DOI:10.1039/c2jm15114f
日期:——
A set of novel lithium Schiff base cluster compounds has been synthesised and characterised for the first time and tested as electron injectors in OLED devices. Their electrical, electronic, thermal and optical properties have been investigated and compared with the industry standards LiF and lithium quinolinolate (LiQ). Amongst the compounds tested, lithium 2-((o-tolylimino)methyl) phenolate was found to enhance the efficiency of OLEDs by 69% compared to LiF and 15% compared to LiQ. The same electron injector was found to extend the lifetimes of OLEDs by six-fold compared to LiF and 4.3-fold compared to LiQ respectively. The crystal structure of the parent compound, lithium 2-((phenylamino)methyl)phenolate reveals that the compound is tetrameric in contrast to hexameric LiQ. Substituting the methyl group with fluorine causes a remarkable depression of the HOMO and LUMO levels by up to 1.2 eV. Analysis of current density vs. voltage characteristics of single-layer devices for Li–Al/electron injector/Li–Al and Al/electron injector/Al reveals that both sets of devices are operating as electron-only devices indicating that the formation of free lithium is the cause of enhanced electron injection, but either the energetic aluminium atoms (as proposed previously by other workers) or energetic lithium complexes on an aluminium surface (as we have demonstrated in this paper) are all that is required for efficient electron injection.
The reactions of salicylaldimines with electron‐rich alkenes (2,3‐dihydro‐2H‐furan and 3,4‐dihydro‐2H‐pyran) catalyzed by N,N′‐dioxide–Sc(OTf)3complexes were investigated. The methodology was successfully applied to the asymmetricsynthesis of cis‐4‐aminobenzopyran derivatives. Excellent yields, diastereo‐ and enantioselectivities were observed for a broad range of substrates under mild conditions
Brønsted acids of anionic chiral Co(<scp>iii</scp>) complexes as catalysts for the stereoselective synthesis of cis-4-aminofuranobenzopyrans
作者:Hua-Jie Jiang、Kun Liu、Jing Wang、Na Li、Jie Yu
DOI:10.1039/c7ob02452e
日期:——
A highly enantioselective interrupted Povarov reaction of salicylaldimines and 2,3-dihydrofuran was developed, through the elegant Brønsted acid catalysis of anionic chiral Co(III) complexes. This reaction affords the cis-4-aminofuranobenzopyran derivatives with up to 95% yield, >20:1 dr and 96:4 er. Moreover, a one-pot three-component procedure of salicylaldehydes, anilines, and 2,3-dihydrofuran proves