حسن شمران محمد

Azo dye ligand (HMDA), namely N-(4-((E)-((1E,6E)-1,7-bis(4-hydroxy-3-methoxyphenyl)-3,5-dioxohepta-1,6-dien-4-yl)diazenyl)phenyl)acetamide was prepared by coupling diazonium salt of 4-aminoacetanilide with curcumin in basic conditions. The HMDA ligand and its Au(III) complex were characterized by elemental analysis, mass spectroscopy, 1H-NMR, FTIR, UV-visible spectra, and molar conductivity. The molar ratio method was applied to ascertain the stoichiometric composition of the Au(III) complex in aqueous solution, which was 1:2 (metal ion to ligand). HMDA ligand binding with Au(III) ion used the enolate form moiety of curcumin under alkaline conditions which was observed by infrared spectra and investigated by elemental analysis and 1H-NMR. HMDA and its Au(III) complex

Novel azo ligand of indole namely, 3-(2-benzothiazolylazo)-indole (BTAI) was synthesized by coupling diazonium salt with indole. The BTAI ligand and its complexes of copper and palladium have been characterized by different techniques (1H-NMR, UV–Vis and FT-IR and spectral studies, elemental analysis (C.H.N.) and conductivity. Metal complexes were

In this work, we synthesized and characterized an azo dye of amino pyridine namely 6-[3- pyridylazo]-2,4-dichlorophenol (PADCP) furthermore its complexes of cobalt, nickel and copper divalent ions. The infrared spectra refereed that PADCP ligand coordinates by oxygen and nitrogen atoms to the metals in the complexes as bidentate ligand. The synthesized complexes have general formula [M(PADCP)2] which confirmed by elemental analysis, magnetic moments, molar conductivity and electronic spectra.

Azo dye of quinoline named 5-(3-pyridylazo)-8-hydroxyquinoline dye (PAHQ) was prepared via coupling reaction of diazonium salt of 3-aminopyridine and 8-hydroxyquinoline. he PAHQ dye was characterized by elemental analysis, mass spectroscopy and 1H-NMR. The complexes of PAHQ dye were prepared under 2: 1 (L: M) mole ratio. The complexes were characterized by elemental analysis, infrared spectroscopy, UV-Vis, molar conductance, magnetic susceptibility. The IR spectra data indicate that PAHQ ligand is bidentate through deprotonated phenolic oxygen and

Abstract This article includes the synthesis of heterocyclic azo dye of theophylline by coupling diazonium salt of 4-chloroaniline with theophylline which is, namely, 8-(1-(4-chlorophenyl)azo)theophylline (CPAT). The complexes of cobalt and nickel were prepared by reacting their ions with CPAT ligand in ethanol under 1 : 2 ratio metal-ligand. The CPAT ligand and its complexes were characterized by elemental analysis, infrared spectrometry, electronic absorption spectroscopy, molar co

Photodynamic therapy (PDF) is a good method to treat types of cancer such as skin cancer. This method depends on the properties of the dye sensitizers. We focused on the dye metal complexes because they absorb in visible to infra-red area with high intersystem crossing which is important condition to occur PDT. The dye metals complexes of boron-dipyrrin, pyridyl, chlorins, bacteriophorbides, texaphlins and phthalocyanines dyes exhibited low toxicity in dark condition, absorption in visible to infrared area, high toxicity under irradiation for many diseases of cancer, various, and bacteria.

Coordination compounds and organometallics have very special place in chemistry due to their different structural arrangements and application in various fields. They also play vital role in biological system particularly in human and plant life. The blood oxygen carrier haemoglobin is a coordination compound of iron which is essential for human life, also the chlorophyll is a coordination compound of magnesium essential for plant the life and the continuation of the life on this planet. These compounds are not only biologically important but also comprise a group of drug like molecules and medicines. Coordination compounds such as platinum, palladium and ruthenium complexes are anti-cancer drugs. Also, many of the coordination compounds are anti-bacterial. The coordination compounds have been showed effective behaviour against many diseases like Alzheimer's and malaria. Recently coordination …

A Polymerization Method for dentistry is a collaboration poured into the knowledge base by combining different chemical reactions and polymerization methods. In this study, The results of this study indicated that there was a difference in the amount of internal porosity in the hot polymerized acrylic resin with different methods in sample group A (temperature 25 ° C for 0 '→ 74 ° C for 90' → 100 ° C for 60 '), namely 11.520 in the sample group. B (temperature 25 ° C for 0 '→ 70 ° C for 90' → 100 ° C for 30 ') which is 7,860 and the sample group C (temperature 25 ° C for 0' → 74 ° C for 60 '→ 100 ° C for 30 ') 14,150. slightly compared to sample A (temperature 25 ° C for 0 '→ 74 ° C for 90' → 100 ° C for 60 ') and sample C (temperature 25 ° C for 0' → 74 ° C for 60 '→ 100 ° C for 30 '). The temperature of the polymerization process does not exceed the boiling point of the monomer, the amount of porosity contained in the acrylic resin will be low, the monomer boiling point is 100.8 ° C.

Photochromism, in which a molecule is reversibly photo-transformed between two isomers having different absorption spectra, has been a promising research topic in modern molecular science [3].

The title compound, [RuCl(NO)(C6H7N)4](PF6)2·0.75(CH3)2CO, comprises four ligands of 4-picoline in equatorial position around the central atom. Overall, the complex features an octa­hedral coordination environment around the central RuII atom, with the chlorido ligand trans to the nitrosyl. The bond length of the nitrosyl N=O ligand is 1.140 (5) Å, while the angle Ru—N=O is 179.0 (4)°. The asymmetric unit contains four PF6− counter-anions, two with occupancy of 0.25 and one with occupancy of 0.5. One PF6− anion is disordered over two sets of sites and one other is disordered with an acetone mol­ecule that occupies the same site.

n the cation of the title complex, [RuCl(NO)(C12H12N2)2](PF6)2, the central RuII ion is sixfold coordinated by a chloride ion and a nitrosyl ligand, which are cis to one another, and by four N atoms of two 4,4′-dimethyl-2,2′-bi­pyridine ligands, in a slightly distorted octa­hedral geometry. One of the PF6− anions is located in a general position, while the other is composed of two half PF6− anions located on twofold rotation axes. The crystal packing is dominated by C—H⋯F hydrogen bonds, leading to the formation of a three-dimensional supra­molecular structure. There are also C—H⋯Cl hydrogen bonds present.

The New bidentate azo dye ligand 4-[(6-purinyl)azo]1-naphthol (PAN) was prepared by reacting a diazonium salt solution of 6-amino purine with 1-naphthol in alkaline solution . The ligand and its complexes with metal ions; Fe(), Co (), Ni ()and Cu ()were prepared and characterized by infra-red ( FT.IR) , Uv-visible spectroscopy , atomic absorption ,(C.H.N) analysis , Magnetic susceptibility and molar conductivity