Yahya Al-Khafaji

University of Babylon · Department of Chemistry

The reaction between benzil and hexamethylenediamine formed a new ligand [L], [(1Z,3Z)-2,3-diphenyl-5,6,7,8,9,10-hexahydro-1,4-diazecine], of the type [N2], was synthesized by the condensation reaction through Schiff base reaction between benzil and hexamethylenediamine. The new Schiff base ligand reacts with Mnп, Niп and Coп metal ions to give the...

A new series of nickel and copper ions were synthesized from the azo ligand derived from 2,4-dihydroxybenzoic acid and aniline derivative. All ligands and their complexes have been prepared and characterised by IR, Uv-Vis 1 HNMR and CHN analysis. The complexes are investigated as antibacterial agents.

Heterocyclic compounds were prepared from Glycerol derivatives, the first step was included, p- aminobenzoic acids convert to p-amino benzoyl chloride in the presence of thionyl chloride then glycerol was added to form triesters ( compound A). Next step reaction of ester product with the salicylaldehyde or 4-(dimethylamino)benzaldehyde to give corr...

Heterocyclic compounds were prepared from Schiff bases triester derivatives, the first step was included, p- aminobenzoic acids convert to p-amino benzoyl chloride in the presence of thionyl chloride then glycerol was added to form triesters compound A. second step reaction of triester product with the 4-nitrobenzaldehyde, and 3-amino benzaldehyde...

This chapter reviews the classification of biopolymers, their preparation, and the future of biopolymers polymers. Copolymers between two or more biopolymers are also discussed in this chapter. Many examples of biopolymers are discussed such as poly(hydroxy acid), polyglycolic acid, poly(lactic acid), and poly(4-hydroxybutyrate). Moreover, the comp...

This review is concluded of 8-Hydroxyquinline (8HQ) compound and derivatives which has a very significant interests with a strong fluorescence , furthermore the relationship between divalent metal ions and characteristic of chelating. In the same way coordinated features have increase of its organic action and inorganic behavior by giving many samp...

Fabrication of polyvinyl alcohol (PVA)–polyethylene oxide (PEO) blend doped with tin dioxide (SnO2) nanocomposites has been investigated for flexible electrical and optical applications. The prepared nanocomposites have low cost, lightweight, flexible, high corrosion resistance, good optical and electrical properties. These properties of fabricated...

المشروبات الغازية: هذا الإسم الذي ما إن يذكر حتى يخطر ببال السامع العديد من الأصناف والمنتجات التي تملأ ثلاجات العرض في جميع أماكن السوق إبتداءاً من أصغر محل لبيع المواد التموينية في أصغر قرية من قرى العالم وحتى أكبر مراكز التسوق في أكبر مدينة من مدن العالم ،ويمكن أن نطلق على المشروبات الغازية إسم"سائل الشيطان" أو يمكن أن يطلق عليها إسم "السُم الغذ...

Synthesis of polyvinyl alcohol (PVA)–polyethylene oxide (PEO)–copper oxide (CuO) nanocomposites and studying their structural and optical properties for humidity sensors applications were investigated. The prepared humidity sensors have lightweight, low cost, flexible and high sensitivity compare with other humidity sensors. The results showed that...

the anti-corrosive behaviour of some azodyes compounds derivatives,(a)4,6,7-trimethyl-8-((2-nitrophenyl)diazenyl)-2H-chromen-2-one, (b)2-((4,6,7-trimethyl-2-oxo-chromen-8-yl)diazenyl)benzoic acid, (c) 4,6,7-trimethyl-8-(phenyldiazenyl)-chromen-2-one, (d) 8-((2- hydroxyphenyl)diazenyl)-4,6,7-trimethyl-chromen-2-one and (e) 8-((2-methoxyphenyl)diazen...

This chapter investigates the main features of biodegradable polymer including, applications of polymers, the problems of synthetic polymers, why biodegradable polymers, biodegradable polymers, copolymers. Also, the chapter gives an example of biodegradable polymers which is aliphatic polyesters include: polylactide (PLA), polycaprolactone (PCL) an...

A two of monomeric and dimeric Al(III) catalysts with substituted 4,4'-Methylenebis(2,6-diisopropylaniline) based Schiff base ligands, produced by reacting between dianiline with one equivalents and two equivalents of 3,5-Di-tert-butylsalicylaldehyde to form L 1 H and L 2 H2 respectively. When L 1 H was reacted with one mole of triethyl aluminium,...

Cloud point extraction (CPE) is a separation and pre-concentration method that has been considerably applied for trace metal determination in quite a lot of different matrices. Its most important advantages are simple experimental procedures, low cost, high pre-concentration factors, environmental safety and agreement with the "green chemistry" pri...

Reaction of two equivalents of the bidentate 2,2'-PhCH[4,6-(t-Bu)2C6H2OH]2 with one equivalent of niobium pentachloride gave the complex Nb{2,2'-PhCH[4,6-(t-Bu)2C6H2O]2}2 (1) . Similar use of two equivalents of the same ligand with one equivalents tantalum pentachloride afforded Ta{2,2'-PhCH[4,6-(t-Bu)2C6H2O]2}2 (2). The molecular structure of comp...

Reaction of two equivalents of the bi-dentate 2,2′-PhCH[4,6-(t-Bu)2C6H2OH]2 with one equivalent of niobium pentachloride gave the complexes Nb{2,2′-PhCH[4,6-(t-Bu)2C6H2O]2}2 (1) . Similar use of two equivalents of the same ligand with one equivalents tantalum pentachloride afforded Ta{2,2′-PhCH[4,6-(t-Bu)2C6H2O]2}2 (2). The molecular structure of c...

Reaction of R1R2CHN=CH(3,5-tBu2C6H2-OH-2) (R1 = R2 = Me L1H; R1 = Me, R2 = Ph L2H; R1 = R2 = Ph L3H) with one equivalent of R33Al (R3 = Me, Et) afforded [(L1-3)AlR32] (L1, R3 = Me 1, R3 = Et 2; L2, R3 = Me 3, R3 = Et 4; L3 R3 = Me 5, R3 = Et 6); complex 1 has been previously reported. Use of the N,O-ligand derived from 2,2/-diphenylglycine afforded...

Reaction of LiOR (R=t-Bu, Ph) with the acids 2,2/-Ph2C(X)(CO2H), X=OH (benzH), NH2 (dpgH) was investigated. For benzH, one equivalent LiOt-Bu in THF afforded [Li(benz)]2⋅2THF (1⋅2THF), which adopts a 1D chain structure. If acetonitrile is used (mild conditions), another polymorph of 1 is isolated; LiOPh also led to 1. Robust work-up afforded [Li7(b...

The reaction of the dialkylzinc reagents R2Zn with the acids 2,2-Ph2C(X)(CO2H), where X = NH2, OH, i.e. 2,2′-diphenylglycine (dpgH) or benzilic acid (benzH2), in toluene at reflux temperature afforded the tetra-nuclear ring complexes [RZn(dpg)]4, where R = Me (1), Et (2), 2-CF3C6H4 (3), and 2,4,6-F3C6H2 (4); complex 2 has been previously reported....

Reaction of the bulky bi-phenols 2,2′-RCH[4,6-(t-Bu)2C6H2OH]2 (R = Me L1MeH2, Ph L1PhH2) with the bis(imido) molybdenum(VI) tert-butoxides [Mo(NR1)(NR2)(Ot-Bu)2] (R1 = R2 = 2,6-C6H3-i-Pr2; R1 = t-Bu, R2 = C6F5) afforded, following the successive removal of tert-butanol, the complexes [Mo(NC6H3i-Pr2-2,6)2L1Me] (1), [Mo(NC6H3i-Pr2-2,6)2L1Ph] (2) and...

Photocatalytic decolorization of methylene blue dye (MB) in water has been investigated in an immersed UV light irradiation slurry photoreactor using zinc oxide (ZnO) as a semiconductor photocatalyst. The effects of different parameters such as initial dye concentration, photocatalyst loading, and pH of solution on the decolorization rate of MB hav...

Reaction of the ligand alpha, alpha, alpha/,alpha/-tetra(3,5-di-tert-butyl-2-hydroxyphenyl–p-)xylene-para-tetraphenol (p-L1H4) with two equivalents of [NbCl5] in refluxing toluene afforded, after work-up, the complex {[NbCl3(NCMe)]2(μ-p-L1)}•2MeCN (1•2MeCN). When the reaction was conducted in the presence of excess ethanol, the orange complex {[NbC...

The vanadyl complexes [VO(OtBu)L1] (1) and {[VO(OiPr)]2(μ-p-L2p)} (2) {[VO(OR)]2(μ-p-L2m)} (R = iPr 3, tBu 4) have been prepared from [VO(OR)3] (R = nPr, iPr or tBu) and the respective phenol, namely 2,2′-ethylidenebis(4,6-di-tert-butylphenol) (L1H2) or α,α,α′,α′-tetra(3,5-di-tert-butyl-2-hydroxyphenyl–p/m-)xylene-para-tetraphenol (L2p/mH4). For co...

Photocatalytic decolorization of methylene blue dye (MB) in water has been investig -ated in an immersed UV light irradiation slurry photoreactor using zinc oxide (ZnO) as a semiconductor photocatalyst. The effects of different parameters such as initial dye concentration, photocatalyst loading, and pH of solution on the decolorization rate of MB h...

In the present study, the determination of the heavy metals (Pb, Zn, Mn, Cu and Fe) which considered the main source of pollution in plants and soils, was carried out. (20) Samples are collected from different soils (depth 10 cm) and plant (roots and leaves of Wheat) from the northern, eastern and the southern sites to the illegal bricks factories....

Conductive polymer composites have been widely used in industrial applications, such as biomedical devices , self-heating materials, electrostatic dissipation and over current protectors. This paper investigate the study of the effects of Chloro Pentaammine Cobalt(III) Chloride complexes on Electrical properties of polyvinyl alcohol. samples were p...

Conductive polymer composites have been widely used in industrial applications, such as biomedical devices , self-heating materials, electrostatic dissipation and over current protectors. This paper investigate the study of the effects of Chloro Pentaammine Cobalt(III) Chloride complexes on Electrical properties of polyvinyl alcohol. samples were p...

Conductive polymer composites have been widely used in industrial applications, such as biomedical devices , self-heating materials, electrostatic dissipation and over current protectors. This paper investigate the study of the effects of Chloro Pentaammine Cobalt(III) Chloride complexes on Electrical properties of polyvinyl alcohol. samples were p...

In this study, administered to determinate the concentrations for some of the heavy elements which are Pb, Ni, Zn, Fe, and Mn, which are considered from the main sources of air pollution. Samples are collected from dust of computers in three different positions in Hilla city (University of Babylon, Houses, Internet centers) about ten samples for ea...