نتایج جستجو برای: niii complex

تعداد نتایج: 784010  

Journal: :European Journal of Inorganic Chemistry 2021

NiII and MnIII Schiff base complexes (Salophen-Ni Salophen-MnCl) bearing a pending carboxylic group were prepared characterized. Both grafted onto mesoporous amino-functionalized SBA-15 silica, by formation of an amide function between the propylamine groups support acid functions salophen ligand (corresponding respective to 1.30 wt.% Ni 1.06 Mn). The co-catalytic behaviour free was then evalua...

Journal: :European Journal of Inorganic Chemistry 2021

2-Carboxyphenylacetate (cpa2?) and 1,2-phenylenediacetate (1,2-pda2?) have been reacted with uranyl cations under solvo-hydrothermal conditions to generate six homo- or heterometallic complexes. Both [UO2(cpa)] (1) [UO2(cpa)(phen)] (2), where phen is 1,10-phenanthroline, crystallize as monoperiodic coordination polymers. [Ni(bipy)3][(UO2)2(cpa)3]?2.5H2O (3), a diperiodic network the hcb topolog...

2017
Mohammad A Abdulmalic Saddam Weheabby Francois E Meva Azar Aliabadi Vladislav Kataev Bernd Büchner Frederik Schleife Berthold Kersting Tobias Rüffer

The reaction of one equivalent of [n-Bu4N]2[Ni(opboR2)] with two equivalents of [Cu(pmdta)(X)2] afforded the heterotrinuclear CuIINiIICuII containing bis(oxamidato) type complexes [Cu2Ni(opboR2)(pmdta)2]X2 (R = Me, X = NO3- (1); R = Et, X = ClO4- (2); R = n-Pr, X = NO3- (3); opboR2 = o-phenylenebis(NR-substituted oxamidato); pmdta = N,N,N',N",N"-pentamethyldiethylenetriamine). The identities of...

2017
Tuncer Hökelek Gizem Sertkaya Ezgi Ay Safiye Özkaya Hacali Necefoğlu

In the title NiII complex, [Ni(C10H11O2)2(C6H6N2O)2(H2O)2]·2H2O, the divalent Ni ion occupies a crystallographically imposed centre of symmetry and is coordinated by two O atoms from the carboxyl-ate groups of two 2,4,6-tri-methyl-benzoate (TMB) ligands [Ni-O = 2.0438 (12) Å], two N atoms from the pyridyl groups of two isonicotinamide (INA) ligands [Ni-N = 2.1506 (15) Å] and two water mol-ecule...

Journal: :Angewandte Chemie 2021

We describe a series of air-stable NiIII complexes supported by simple, robust naphthyridine-based ligand. Access to the high-valent oxidation state is enabled CF3 ligands on nickel, while naphthyridine exhibits either monodentate or bidentate coordination mode that depends and sterics, enables facile aerobic NiII NiIII. These act as efficient catalysts for photoinduced C(sp2)−H bond trifluorom...

Journal: :Inorganics (Basel) 2023

Four new NiII, CoII, ZnII, and CuII complexes with the promising anti-tuberculosis drug (E/Z)-N′-((5-Hydroxy-3,4-bis(hydroxymethyl)-6-methylpyridin-2-yl)methylene)-isonicotino-hydrazide (LH) were synthesized characterized by structural methods: single-crystal X-ray diffraction, vibrational spectroscopy, mass spectrometry. The ZnII metal ions form only amorphous phases various morphologies accor...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم انسانی 1390

this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...

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