79759-08-3Relevant academic research and scientific papers
Square planar nickel(II) complexes with halogenated o- diiminobenzosemiquinonato ligation: Synthesis, characterization, and redox property
Zuo, Wansheng,Zhang, Long,Xie, Meihua,Deng, Liang
supporting information, p. 1473 - 1482 (2014/01/06)
Seven square planar bis(o-diiminobenzosemiquinonato)nickel(II) complexes, [Ni(o-C6H4(NH)(NAr))2] (Ar=Mes, 1; p-F-C 6H4, 2; p-Cl-C6H4, 3), [Ni(o-4,5-F2-C6H2(NH)(NPh))2] (4), and [Ni(o-4,5-Cl2-C6H2(NH)(NAr))2] (Ar=Ph, 5; 2,6-F2-C6H3, 6; 2,6-Cl 2-C6H3, 7), have been synthesized and characterized by 1H NMR, 13C NMR, 19F NMR, IR, UV-Vis-NIR, elemental analyses, HRMS, as well as single-crystal X-ray diffraction studies (1 and 7). The cyclic voltammograms of these complexes exhibit two reversible redox processes of [NiL2]0/1- and [NiL2]1-/2-, and one irreversible process of [NiL 2]0/2+. Substituent effects on the redox properties of these complexes, in addition with those of the known complexes [Ni(o-C 6H4(NH)(NPh))2] (8) and [Ni(o-3,5-Bu t2-C6H2(NH)2) 2] (9), are identified by comparing the half-wave potentials of the reduction waves, as 1≈92] parallels the electron-donating and -withdrawing ability of the substituent group. Reduction of 1 with one or two equivalents of sodium metal in THF has led to the isolation of [Na(THF) 3][1] and [Na(THF)3]2[1]. The structure data of these two complexes revealed by low-temperature X-ray crystallography suggest their corresponding electronic structures of [NiII(1L ·1-)(1L2-)]1- and [Ni II(1L2-)2]2-, which are in line with those of [9]n (n=1-, 2-) suggested by spectroelectrochemical study. Copyright
Novel 1,5-benzodiazepines as CCK-B ligands. Effect of aryl-carbamic substituents at the C-3 position together with halogen substitution on the benzo-fused ring
Tranquillini, M. Elvira,Cassara, Paolo G.,Corsi, Mauro,Curotto, Giovanni,Donati, Daniele,Finizia, Gabriella,Pentassuglia, Giorgio,Polinelli, Stefano,Tarzia, Giorgio,Ursini, Antonella,Van Amsterdam, Franciscus T.M.
, p. 353 - 357 (2007/10/03)
The synthesis and biological evaluation as potential CCK-B receptor ligands of a number of 1-isopentyl-3-aryloxycarbamoyl-5-aryl-1,5-benzodiazepines substituted with halogen atoms on the benzo-fused ring is here briefly discussed.
