A propanetricarboxylic acid ornamented multi-CeIII encapsulated phospho(III)tungstate [H2N(CH3)2]4Na4H2[Ce4(HP)W4(H2O)14(H2PTCA)2O18][(HPIII)2W22O76]·16H2O (1, H3PTCA = 1,2,3-propanetricarboxylic acid) was obtained by a facile one-step reaction of Na2WO4·2H2O, H3PO3, Ce(NO3)·6H2O, itaconic (H2ICA) and dimethylamine hydrochloride. Notably, the polyanion 1 possesses neotype [(HPIII)2W22O76]12‒ fr...

The kinetics of thermal decomposition of AlIII -, CrIII -, FeIII ,CeIII and LaIII -alginate complexes have been studied using thermogravimetry (TG) and differential thermogravimetry (DTG) techniques in static air. However, the TG curves showed three distinct stages of weight loss, the DTG curves indicated the presence of a series of thermal peaks associated with the TG curves. The results revea...

Lanthanide (LnIII) ions were successfully chelated and sensitized with a tripodal ligand. The absolute LnIII-centered emission efficiencies ~3% for both the europium(III) (EuIII) terbium (TbIII) complexes up to 54% cerium(III) (CeIII) complex. differences in quantum yields early lanthanides mid (EuIII TbIII) attributed their d–f f–f nature, respectively. Despite low yield of EuIII complex, comb...

CeO2 catalysts were prepared by a precipitation method using either (NH4)2Ce(NO3)6 or Ce(NO3)3, as CeIV CeIII precursors respectively. The influence of the different on catalytic activity was evaluated for total oxidation propane with water present in feed. catalyst precursor more active oxidation. choice influenced properties such surface area, reducibility, morphology, and oxygen species. pre...

Herein we report that mixed zirconium-cerium-MOFs with amino-functionalized linkers (2-amino-1,4-benzenedicarboxylate, BDC-NH2, and 4-aminonaphthalene-2,6-dicarboxylate, NDC-NH2) act as effective non-noble-metal-based heterogeneous catalysts, for both the aerobic photooxidation of benzylic alcohols direct microwaves activation N-alkylation amines alcohols. The catalytic performance has been stu...

Two mononuclear ruthenium(II) complexes based on dianionic {N4} ligands and with axial pyridines have been prepared characterized crystallographically (1) or by 2D NMR spectroscopy using residual dipolar couplings (2). The provide a constrained equatorial coordination one large N−Ru−N angle, additional non-coordinating N atoms in case of 2. Their redox properties investigated (spectro)electroch...

A natural sample of perovskite (calcium caesium sodium iron titanium oxide) from the Tapira Alkaline Complex in southeastern Brazil was found by electron microprobe analysis to have the chemical formula (Ca(2+) (0.95 (1))Ce(3+) (0.011 (2))Na(+) (0.010 (4)))(Fe(3+) (0.022 (2))Ti(4+) (0.98 (1)))O(2-) (3) and by IR spectroscopy to be an anhydrous mineral. Oxygen anions are arranged around Ti(4+) i...