The stability constants of species present in the systems Ni(II)-pyridoxamine(pym)(A) and Ni(II)-pyridoxamine(pym)(A)-imidazole containing ligands(B) [B = imidazole(him),  benzimidazole(bim), histamine(hist) and L-histidine(his)] have been determined pH-metrically using the MINIQUAD computer program. The existence of the species NiAH, NiA and NiA2 was proven for the Ni(II)-pym(A)...

The survey depicts the combination of large-scale monodentate phosphites in response to PCl3/NEt3 with p-tert-butyl calix[4]-(OH)3-OR, where R contains an oxygen-containing substituent (R = CH2P(O)Ph2, -CH2CO2Et, -CH2C(O)NEt2, -CH2CH2OMe). These funnel-shaped calissarenes have a phosphorus particle bridging three phenolic oxygen atoms, and are incredibly steady NaOH-aqueous arrangement due cone...

We report the characterization and photochemistry of a simple ruthenium coordination complex containing only picolinate (pic) and dmso, which exhibits a large isomerization quantum yield (Phi(SS-->OO) = 0.50) in various solvents. The picolinate ligands of [Ru(pic)(2)(dmso)(2)] are in a cis arrangement so that the carboxylate oxygen of one pic ligand (O1) is trans to the pyridine of the second p...

We reviewed the synthesis, structure, and properties of pyridine complexes AgXO4 (X = Cl, Mn, Re) compounds with various compositions ([AgPy2] XO4, [AgPy2XO4]·0.5Py, [AgPy4] 4 [AgPy2XO4] XO4). also clarified controversial information about existence composition silver permanganate, used widely as mild selective oxidants in organic chemistry. discussed detail available structural spectroscopic (...

a liquid membrane containing diethylene glycol monobutyl ether (2) shows specificity for k ion in transport while diethylene glycol dibutyl ether (1) was selective for na over k . as an extractant, ligand 2 exhibited pronounced extraction selectivity for k over na in comparison with ligand 1

The mercury (II) complex, Hg (Meca2en)I2 (1), containing bidentate Schiff base ligand  Meca2en = N,N′-bis[(E)-2-benzylidenepropylidene]ethane-1,2-diamine, has been synthesized and characterized by elemental analyses (CHN) and 1H-NMR spectroscopy. The crystal structure of 1 was determined using single-crystal X-ray diffraction. Structural investigation shows that 1 crystallizes in a monoclinic s...

A liquid membrane containing diethylene glycol monobutyl ether (2) shows specificity for K ion in transport while diethylene glycol dibutyl ether (1) was selective for Na over K . As an extractant, ligand 2 exhibited pronounced extraction selectivity for K over Na in comparison with ligand 1

Copper, Dioxygenase, Urushiol Model, Catechol Ternary copper(II) complexes containing the dianion of 3-n-nonylcatechol and a number of bidentate nitrogen containing counter ligands have been prepared and characterized. It has been demonstrated that, in the presence of oxygen, the catecholato ligand undergoes intradiol ring cleavage in a fashion similar to that carried out by intradiol aromatic ...