نتایج جستجو برای: copperii complexes
تعداد نتایج: 137080 فیلتر نتایج به سال:
Up to date 12 complexes of triethanolamine with alkali, alkaline earth, lanthanide metals and hydrogen have been reponed. The synthesis and structure determination of these compounds is the subject of this review papacr. Moreover, the similarities and the differences of the complexes with respect to the metals and ligand are discussed.
First, Schiff base iminopyridine ligand has been prepared by the condensation between primary amine, dimethylaniline and active carbonyl group of pyridine carboxaldehyde, then related complexes were synthesized in methanol solution. The ligand and metal complexes have been characterized by elemental analysis, UV, IR, 1 H NMR and 13CNMR spectroscopy. The spectroscopic data of metal complexes ind...
Oxovanadium(IV), manganese(II) and copper(II) complexes of a Schiff base ligand derived from 2,4-dihydroxyacetophenone and 1,2-diaminocyclohexane have been encapsulated in the nanocavity of zeolite-Y by flexible ligand method and characterized by metal analysis, IR spectroscopic studies and X-ray diffraction patterns. The encapsulated complexes abbreviated here as CuL-Y, MnL-Y and VOL-Y catalyz...
we present detailed theoretical studies of the h-bonded complexes formed from interaction between 5-fluorouracil and various six-membered cyclic nitrosamine compounds. in this study, an investigation on intermolecular interactions in x-nu (x = ch2, sih2,bh, alh, nh, ph, o and s) complexes is carried out using density functional theory. the calculations are conducted on b3lyp/6-311++g** level ...
new two nano- sized schiff base complexes [m(l)], where l= 2, 2'-((1e, 1e')-(1, 2 phenylen bis (azanylylidene)) bis (methanylylidene)) bis (4-bromo phenolato) and m=cu or zn, (a, b complexes) were synthesized by ultrasonic irradiation. these complexes were characterized by elemental analysis, molar conductivity, ft-ir, fluorescence emission, 1h nmr, field emission scanning electron sp...
In this research at the first complexes were optimized. NBO calculations and NMR for the complexes were carried out at the B3LYP/6-31G*quantum chemistry level. Different parameters such as energy levels, the amount of Chemical Shift in different atoms, the amount of HOMO/LUMO, chemical potential (µ ), chemical hardness (η), Formazan dyes have become important reactive dyes for cotton. Formazan ...
N-propylsalicylidene based on silica as ion exchanger (IE) was used for the separation by complexation of Mn2+, Co2+, Ni2+, Cu2+, Hg2+, Cr3+, Fe3+, and UO22+ from their parent solutions. IE and its metal complexes are characterized by elemental analysis, electronic and infrared spectra, in addition to thermal analysis in atmospheric pressure. The mode of chelation and the proposed geometric str...
In the present century, the emergence of issues such as population growth, public demand for living or working in urban centers, increasing use of land have allowed for existence of high rise residential complexes necessary in most major cities of the world. Despite their benefits and advantages, high-rise residential complexes have also given rise to some limitations and threats and have gr...
Nowadays, sport complexes are one of the most important parts of the universities that play a key role in improving the quality of studentschr('39') life and enhancing their desirable living standards, so that It is important to pay attention to the concept of forming these spaces throughout history and to suggest ways of promoting their position in universities and clarify their criteria and s...
This paper is concerned with the derivation and properties of differential complexes arising from a variety problems in equations, applications continuum mechanics, relativity, other fields. We present systematic procedure which, starting well-understood such as de Rham complex, derives new deduces old. relate cohomology output complex to that input show has closed ranges, and, consequently, sa...
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