copper([) and nickel complexes or salt

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MIXED LIGAND COMPLEXES OF NICKEL(II), COPPER(II) AND ZINC(II) WITH NICOTINANILIDE AND THIOCYANATE WITH SOME NICKEL(II), COPPER(II) AND ZINC(II) SALT

MIXED LIGAND COMPLEXES OF NICKEL(II), COPPER(II) AND ZINC(II) WITH NICOTINANILIDE AND THIOCYANATE WITH SOME NICKEL(II), COPPER(II) AND ZINC(II) SALT

vitamins and drugs [7, 8].The binding of metal ions to nicotinanilide groups has been a subject of increasing interest, because many of these reactions provide simple models for much more complex metal peptide systems and enzymes. We report here the synthesis, characterization and biological activities of some new nickel (II), copper (II) and zinc (II) mixed-ligand complexes containing nicotinanilide and thiocyanate as ligands. The synthesized complexes are characterized by elemental, IR and electronic spectroscopic analysis.
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Synthesis and Characterization of Sodium Diphenylcarbamodithioate Ligand [L] and its Cobalt, Nickel, and Copper Complexes

Synthesis and Characterization of Sodium Diphenylcarbamodithioate Ligand [L] and its Cobalt, Nickel, and Copper Complexes

Diphenylcarbamodithioate complexes were prepared by the general methods and as follows: A solution of methanol (10 ml) and nickel chloride salt (0.177 g, 0.75 mmole) was added with stirring into methanolic solution of the sodium diphenylcarbamodithioate ligand (0.2 g, 1.49 mmol) in methanol (15 ml). The mixture was allowed to stir for 2 h, and then distilled water was added, the resulted solid was filtered off, and washed with methanol and dried at room temperature to give the required diphenylcarbamodithioate complex. All the other complexes have been prepared in the ratio of 1:2 metal- ligand. Elemental analysis data, colors, and yields for the complexes are given in Table I.
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Synthesis and Characterization of Some Modified Acrylic Polymers

Synthesis and Characterization of Some Modified Acrylic Polymers

Polymer complexes of polymer (A) or polymer (B) with copper and nickel acetates and chlorides were prepared. A solution of the polymer in methanol was treated with a solution of metal salt in methanol. The reaction mixture was boiled under reflux with constant stirring for 5 hours. The resulted complex was filtered, washed with methanol and dried under vacuum for five days. Characterization of the polymers

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Synthesis and antibacterial activity of transition metal complexes of 2 amino acetate, 6 nitro benzothiazole

Synthesis and antibacterial activity of transition metal complexes of 2 amino acetate, 6 nitro benzothiazole

Addition of ethanol solution of the suitable metal salt (Nickel acetate tetra hydrate, Copper acetate, Cadmium acetate dihydrate, stannous chloride and Zinc acetate dihydrate) to an ethanol solution of 2-amino acetate, 6-nitro benzothiazole in 2:1(ligand: metal [3, 4] molar ratio was carried out. After refluxing for half an hour, crystalline colored precipitates formed at room temperature. Washed with distilled water, dried and recrystallized from ethanol and dried at 46 0 C. Table 1: Shows the melting point of the prepared compounds
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Complexes of 4, 6 dinitrobenzothiazole 2 amine acetate with some transition metal ions: Synthesis, characterization and magnetic properties

Complexes of 4, 6 dinitrobenzothiazole 2 amine acetate with some transition metal ions: Synthesis, characterization and magnetic properties

All the matal complexes have been prepared by refluxing the ethanol solution of the suitable metal salt (Nickel acetate tetrahydrate, Copper acetate, Cadmium acetate dihydrate and Zinc acetate dihydrate) and 2-aminoacetic acid benzothiazole for one hour. The 2:1 ratio of ligand to metal is maintained throughout all the experiments. The obtained crystalline colored precipitates upon cooling the solutions at room temperature were filtered off, washed with distilled water and recrystallized from ethanol.

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Mixed Ligand Schiff Base Complexes of Some Metal (II) Salts: Preparation, Spectral Characterization and Antibacterial Screening

Mixed Ligand Schiff Base Complexes of Some Metal (II) Salts: Preparation, Spectral Characterization and Antibacterial Screening

33. Srivastava KP, Singh A, Singh SK (2014) Green and efficient synthesis, characterization and antibacterial activity of copper (II) complexes with unsymmetrical bidentate Schiff base ligands, IOSR -J. Appl. Chem., 7(4), 16-23. 34. Shashidhar NR, Shankara BS, Murali PK, Basavaraj C, Mahesh B (2013) Synthesis, characterization, and antibacterial activity ofCo(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) complexes ofSchiff’s base type ligands containing benzofuran moiety, International Journal of Inorganic Chemistry, 1-10.
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Solubility of Carbon in Molten Copper Nickel Alloy and Vickers Hardness of Copper Nickel Saturated Carbon

Solubility of Carbon in Molten Copper Nickel Alloy and Vickers Hardness of Copper Nickel Saturated Carbon

Figure 7 showed the distribution of graphite particles. In comparison of Fig. 7 (a) and Fig. 7 (b), many graphite parti- cles were observed in the sample which was prepared at high- er the temperature and the Ni content, which meant that the saturated carbon content in the sample was higher. The parti- cles were in every place of the whole sample as shown in Fig. 7 (b) and Fig. 7 (c). However, the particles did not exist uniformly. Many graphite particles were at some place and a few particles were at other place in the sample. The large par- ticles with the size of 5 μm or more could be observed in Fig. 7, but the particles with the size of approximately 0.5 μm did not existed uniformly. Cu-Ni alloy system was all propor- tional solid solution. nickel rich phase in which carbon con- tent was high crystallized out from the melt even in Cu-Ni-C system. Whereas a nickel rich phase could not be distin- guished from a nickel poor phase, it could be said that many graphite particles precipitated from the nickel rich phase. 3.3 Vickers hardness
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Nickel(II) and Copper(II) Complexes of a New Tetradentate Schiff Base Ligand: Synthesis, Characterization, Thermal Studies and Use as Precursors for Preparation of NiO and CuO Nanoparticles

Nickel(II) and Copper(II) Complexes of a New Tetradentate Schiff Base Ligand: Synthesis, Characterization, Thermal Studies and Use as Precursors for Preparation of NiO and CuO Nanoparticles

nickel(II) and copper(II) oxides can be fully indexed on the basis of the hexagonal (Rh) NiO (JCPDS: 44-1159) [42,43,21] and the monoclinic CuO (JCPDS: 45-0937) [34]. XRPD results thus indicate the complete conversion of Schiff base complexes to NiO and CuO. No obvious impurities were detected, indicating the high phase purity of the as-prepared samples. Also, the broadening of all the peaks in the XRD patterns of NiO and CuO indicates that the crystallites are small. The average crystallite size of NiO and CuO nanoparticles was determined to be 17.7 and 19.4 nm, respectively, by using the Scherrer formula.
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Hydrodeoxygenation of Anisole in a Novel Externally Agitated Reactor

Hydrodeoxygenation of Anisole in a Novel Externally Agitated Reactor

Previous studies conflict when comparing monometallic Ni or bimetallic Ni-Cu catalyst performance for HDO or hydrogenation reactions. Studies have suggested that monometallic Ni catalysts are more active for benzene hydrogenation at reaction temperatures between 200 o C – 220 o C, where above 220 o C bimetallic Ni-Cu catalysts are thought to be more active (Khromova et al., 2014). It was predicted that fewer cracking reactions, facilitated by nickel, occurred at lower temperatures, forming methane and coke while leading to faster catalyst deactivation (Smirnov et al., 2014). Similar findings of decreased conversion with copper addition where reported for HDO of phenol with a significant decrease in conversion when substituting 20 wt.% nickel metal loading with 4 wt.% and 10 wt.% of copper (Huynh et al., 2013). An increase in anisole HDO was also seen using Ni-Cu catalyst with a total metal loading of 38 wt.% when compared to monometallic nickel catalysts of equal loading (Yakovlev et al., 2009). Some studies have suggested that the reduced performance following copper addition is due to the strong interaction between nickel and alumina, favouring copper species to arrange themselves closer to the catalyst surface and nickel species below the surface (Yao & Goodman, 2014; Kang et al., 2002). Copper may thus block available active sites on nickel particles. A related study on anisole HDO described higher conversion but lower deoxygenation with bimetallic 16 wt.% Ni/ 2 wt.% Cu catalyst relative to monometallic 20 wt.% Ni (Ardiyanti et al., 2012). The authors suggested that the added copper impacted the nickel-alumina interaction by reducing the formation of Ni-alumina spinels that are difficult to reduce.
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Spectrophotometric Determination of Co(II), Ni(II) and Cu(II) Complexes with Schiff Base Containing Nitrogen and Sulphur Donor Sites

Spectrophotometric Determination of Co(II), Ni(II) and Cu(II) Complexes with Schiff Base Containing Nitrogen and Sulphur Donor Sites

The complexes were prepared by reacting metal halides (0.05 g) of the cobalt(II), nickel(II) and copper(II) in ethanol with ethanolic solution of the ligand 3-propyl(N-ortho-toludine) thiosemicarbazone (0.1g). The mixture was then refluxed under stirring condition. The mixture was then refluxed for 3 h.

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Synthesis, Spectral Characterization and Anticancer Studies of Some Metal(II) Complexes Derived from Imidazole-2-Carboxaldehyde With 2-Amino-3-Carboxyethyl-4,5-Dimethylthiophene

Synthesis, Spectral Characterization and Anticancer Studies of Some Metal(II) Complexes Derived from Imidazole-2-Carboxaldehyde With 2-Amino-3-Carboxyethyl-4,5-Dimethylthiophene

The ligand (1 mmol) was dissolved in methanol. To this, cobalt/ nickel/ copper/ zinc(II) chlorides (1 mmol) dissolved in methanol was added dropwise under magnetic stirring. The above mixture was refluxed for 2 h. The solid products was washed with ether, filtered, and dried in vacuum desiccator. Yield of about 66-72% was obtained for the metal complexes. Purity of the complexes was checked using thin layer chromatographic technique.

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The nickel, copper and zinc complexes of a potentially heptadentate nitrogen donor ligands

The nickel, copper and zinc complexes of a potentially heptadentate nitrogen donor ligands

not refine to an acceptable point and as such the data can only be used to confirm the gross structure of the complex i.e. that the adduct is again a simple 1:1 complex. Once again this motif follows the established chemistry of the phenolate analogue where the copper sits in a five coordinate environment using the secondary and tertiary amines derived from tren as the primary donors. In this instance only one of the aniline groups are incorporated into the metal coordination sphere. Progressing to zinc we obtained yellow complexes which analysed for [ZnL 4 ] 2+ . Although we were unable to confirm a structure using X-ray methods, vibrational
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Performance Evaluation Study on Soil Quality in Dump Yard at Chidambaram Municipal

Performance Evaluation Study on Soil Quality in Dump Yard at Chidambaram Municipal

The soil picture feature will be changed in to a lesser degree causes of the impact on MSW occur to the soil area. Outside dumpsites are utilized widely to refused of municipal solid wastes. Problems that occur even to the obviously correct concept of landfill include leachate generation that surface is penetrable. In- universe solid waste includes garbage home waste and disposable solid items like these from industrial, agricultural operations. they consist more amounts of papers, carry bags, cardboard, plastics, glass, antique construction items, products of packaging items toxic substances[6]. These stay in long times getting accumulation to the soil of the environmental area, polluted by changing there a chemical and biological change from the verification of soil sample close to landfill area showed that heavy metals are lead copper and iron are occur in the soil. The toxicity may lead to encephalopathy renal affected hematological effect. The has confirmed the effect of lead intake like abortion, infant mortality,
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The synthesis and characterization of new metal complexes from biologically active thiosemicarbazone ligands bound to metal ions

The synthesis and characterization of new metal complexes from biologically active thiosemicarbazone ligands bound to metal ions

The metal complexes of nickel(II), copper(II), and zinc(II) containing 2-acetylpyridine- 4-phenyl-3-thiosemicarbazone and 2-acetylpyridine and 2-formylpyridine thiosemicarbazone were ch[r]

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AUSTRALIAN JOURNAL OF BASIC AND

AUSTRALIAN JOURNAL OF BASIC AND

Elemental analyses (CHN) were carried out on a Perkin Elmer 2400 Series II. The IR spectra were recorded as KBr disc with a Shimadzu Prestige-21 spectrophotometer in the 4000-400 cm -1 range. The UV-visible spectra were recorded on a Shimadzu UV-1601 spectrophotometer in DMSO and in methanol. The 1 H NMR and 13 C- NMR spectra of ligand and its complexes were run in deuterated DMSO on an Avance AV-400 MHz spectrometer. Metals were estimated by AA spectrophotometer Perkin Elmer AAnalyst 700. SEM images were taken by Scanning Electron Microscope, JEOL Japan model no. JSM6380A with auto-coater JEOL Japan model no. JFC1500. Magnetic susceptibility values were measured at room temperature with Mark 1 magnetic susceptibility balance from Sherwood Scientific. Pascal’s constants were used to apply diamagnetic corrections for complexes. Conductance and pH of 0.5% solution of complexes were measured in DMSO by conductivity meter Janway 4071 and Metller Toledo MP220 pH meter, melting points of DMBG and its metal complexes were carried out by classical method i.e. in oil bath and verified by Büchi melting point apparatus.
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Preparation and Characterization of novel metal complexes containing hydrazone derived from camphor and 2,4-dinitrophenyl hydrazine

Preparation and Characterization of novel metal complexes containing hydrazone derived from camphor and 2,4-dinitrophenyl hydrazine

H NMR spectra in deturated DMSO are given in Table-1 explain in Figure-7–13 and band data in Table- 3. The 1 H NMR spectra of the hydrazone in DMSO indicates doublet signals inside the 7.48 ppm and 8.58 ppm are refers to H18 and H15 in complexes while in ligand appeared as doublet signals at 7.97 ppm and 8.67 ppm. H17 has been appeared in 7.99 ppm as doublet signals in ligand while in complexes have been showed at 8.45 as quartet signals. The spectra of the structures are differed in Comparison with those of the parent compound (hydrazone). The 1 H NMR spectra of the hydrazone united from camphor and 2,4-dinitrophenyl hydrazine revealed a banner at 9.63 ppm (singlet) in light of the proton NH and The proton NH has vanished in 1 H NMR spectra of structures hydrazone, demonstrating that the NH proton is removed by chelation with the metal ion 29,30 .
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Uptake of lead, nickel and copper by three mucuna species

Uptake of lead, nickel and copper by three mucuna species

Agricultural soils of oil producing states in Nigeria have been severely affected by oil exploration activities and there is need to restore such soils to a manageable level. Phytoremediation uses plants whose rhizospheres are able to accumulate heavy metals from the soil. In order to know the capacity of Mucuna species to grow in soils polluted with crude oil and assess their capability to accumulate heavy metals which are normal components of crude oil, a field experiment was carried out. This experiment was a factorial (3 x 5) arrangement in a completely randomized design. Factors and levels were three species of Mucuna (M. veracruz, M. jaspodea and M. ghana) and crude oil concentrations (volume/weight) in the soil (0 %, 1 %, 2 %, 3 %, and 4 %). Heavy metals (nickel, lead, copper and vanadium) concentrations of crude oil provoked soils were determined prior to planting and then 12 WAP. The three Mucuna species accumulated heavy metals in their vegetative parts. Nickel accumulated more in the roots, than in the leaves, while copper and lead were more concentrated in leaves of the three Mucuna species, the concentration of copper was higher (highest value of 87 mg/g). However, the highest percentage of heavy metals reduction in the contaminated soils was that of lead with a percentage of 47.37 % reduction in the soil. The uptake of these three heavy metals by the vegetative parts of these Mucuna species in response to oil pollution was discussed as a possible use in phytoremediation.
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Synthesis and characterization of some essential amino acid metal complexes
having biological activity

Synthesis and characterization of some essential amino acid metal complexes having biological activity

The qualitative differences between the infrared spectrum of the free amino acid leucine, methionine, leucine complexes , and methionine complexes are discussed in order to ascertain ligand to metal ions bonding modes. The characteristic infrared bonds which are assigned to most significant functional groups of the amino acids and its metal ion complexes are summarized in tables (2) and (3).

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Three Dimensional Digital Alloying with Reactive Metal Inks

Three Dimensional Digital Alloying with Reactive Metal Inks

The two steps consist of a preheating step of low energy pulses to dry and preheat the sample followed by the main sintering step of high energy to achieve reduction and complete necking between the particles. Since the Pulseforge uses a flash lamp to achieve high temperatures in a short amount of time, the process of dewetting could be studied with this tool. The pulse shaping feature in the photonic sintering tool can also be explored to combine the reduction and diffusion processes. In pulse shaping, a custom sintering profile can be designed with pulses having different durations and amplitudes. Farraj et al. [4] analyzed the drying process on a copper precursor ink before the main sintering process. It was observed that the excessive drying of the ink causes crystallization of the copper complex which led to the formation of many islands upon sintering. Therefore, optimization of overall sintering energy is important to reduce the formation of crystallization during the drying stage and induce decomposition of the metal complexes in the main sintering stage. SimPulse® software can be used to simulate these pulses to achieve the desired temperatures to achieve decomposition of the metal complex and diffusion to minimize the island formation in the sintered sample.
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Constructed wetlands: Treatment of concentrated storm water runoff (part A)

Constructed wetlands: Treatment of concentrated storm water runoff (part A)

The aim of this research was to assess the treatment efficiencies for gully pot liquor of experimental ver- tical-flow constructed wetland filters containing Phragmites australis (Cav.) Trin. ex Steud. (common reed) and filter media of different adsorption capacities. Six out of 12 filters received inflow water spiked with metals. For 2 years, hydrated nickel and copper nitrate were added to sieved gully pot liquor to sim- ulate contaminated primary treated storm runoff. For those six constructed wetland filters receiving heavy metals, an obvious breakthrough of dissolved nickel was recorded after road salting during the first win- ter. However, a breakthrough of nickel was not observed, since the inflow pH was raised to eight after the first year of operation. High pH facilitated the formation of particulate metal compounds such as nickel hydroxide. During the second year, reduction efficiencies of heavy metal, 5-days at 20°C N-Allylthiourea biochemical oxygen demand (BOD) and suspended solids (SS) improved considerably. Concentrations of BOD were frequently 20 mg/L. However, concentrations for SS were frequently 30 mg/L. These are the two international thresholds for secondary wastewater treatment. The BOD removal increased over time due to biomass maturation, and the increase of pH. An analysis of the findings with case-based rea- soning can be found in the corresponding follow-up paper (Part B).
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