JOURNAL OF KUFA FOR CHEMICAL SCIENCES

2-[(4–formylphenayl)azo]-4,5-diphenyl imidazole [FPADPI] used as complexation agent to form ion
association complex. pH=8, which is giving higher absorbance at λmax= 460nm , in presence of 50 µgW6+ as
WO4˭in 5mL and 1×10-4 M of [FPADPI], this study show ion pair complex extracted have a structure 1:1
[H-FPADPI]+;HWO4-or [2H-FPADPI]2+;WO4˭, and thermodynamic study show extraction method of
WO4˭ was endothermic with thermodynamic data ∆Hex=0.0287 K J mol-1, ∆Gex=-50.83 K Jmol-1 and
∆Sex= 167.857 J mol-1K-1as well as this research contain another studies.

The reaction of bis[O,O-2,3;O,O-5,6-(chloro(carboxylic)methylidene)]-L-ascorbic acid with the excess
of Sodium sulfide gave new product bis[O,O-2,3;O,O-5,6-(Thiol(carboxylic)methylidene)]-L-ascorbic
acid(LS), which was isolated and characterized by 1H,13C-NMR, elemental analysis (C.H.N.S), mass
spectroscopy, UV-visible and Fourier Transform infrared (FTIR) methods. The complexes of the ligand
(LS) with metal ions, M2+= (Cu, Co, Ni, Cd, Hg) and Cr3+ were synthesized and characterized by FTIR,
UV-Visible, molar conductance, atomic absorption, magnetic susceptibility, elemental analysis (C.H.N.S)
methods. The analysis showed that the ligand (LS) is coordinating with metal ions through the
tetradentate carboxylato and thiol groups manner resulting in six-coordinated metal ion in an octahedral
geometry. The TLC for (LS) and complexes showed one spot for each indicating the purity of these
compounds.

The gemini surfactant polyamide derived from Hexa methylene diamine and ethylene diamin
tetraacetic acid [(2,2'-1,22-diamino-8,15-dioxo-7,10,13,16-tetraazadocosane-10,13-diyl) diacetic acid ] was
synthesized according to the previous our work [1]. A series of electrochemical measurements, including
corrosion potential and corrosion current has been made on polyamide-coated carbon samples in
corrosive environment. Results showed that polyamide can offer some degrees of protection in the
corrosive environments. The thermodynamic functions of dissolution, activation energy and adsorption
processes were calculated and discussed. Adsorption of the inhibitor was found that a follow the
Langmuir adsorption isotherm. The corrosion study of this polymer outline that a new surfactant has a
good resistant to the corrosion of carbon steel in 1 M solution of HCl.

The preparation of new Co(II),Ni(II) ,Cu(II) and Zn(II) complexes with mixed two ligands including 8-
hydroxylquinoline and dithiocarbamate with molecular formula [M(dtc Q)]. The resulted coplexes have
been characterized using elemental analysis , molar conductance measurement indicates a nono electrolyte
behavior, Infrared spectra ,UV-VIS spectroscopy and magnetic moments.The suggested structure for all
complexes were tetra hedralformula.

The New Schiff base ligand [(E)-3-[(Z)-3-(2- Hydroxy phenylimino)-1,5-dimethyl-2-phenyl-2,3-dihydro
1H-pyrazol-4-ylimino]indolin-2-one](2HDMIA) was prepared. The prepared ligand was characterized by
melting point, IR and UV-Vis spectra. All preparation of complexes of the ions Co (II), Ni(II)and Cu(II)
were deduced according to the molar ratio depending on the Micro elemental Analysis (C.H.N.). However
,the ratio were 1:2 (M: L )for all ions. The prepared complexes were characterized using IR, UV-Vis
spectra, molar conductivity magnetic susceptibility and melting points measurements. The percentages of
the metals in the complexes were measured by flame atomic absorption technique. Micro elemental
Analysis (C.H.N.) were also found, the results are in agreement with the Calculated values. All the
complexes are quite stable and could be Stored for months without any appreciable change. According to
the results obtained by elemental and spectral analysis, an octahedral structure suggested for the
prepared complexes of the ions Co (II)and Ni(II) and square planer of the Cu(II) complex

Sensitive extraction method is used for separation preconcentration coupled with spectrophotometric
determination of Zinc(II) and Nickel(II) as chloro anions from acidic HCl media by using crystal violet after
formation ion pair association complex after studied the optimum condition for extraction demonstrated 1.5M
HCl for Zn+2and 1M HCl for Ni2+, with 50 µg Zn2+ and Ni2+ , 0.7mL 1% TritonX-100 for extraction ion pair
association of Zn2+ as well as 0.9mL with Ni2+ and 800C suitable for formation CPL and extraction ion pair
complex for both metal ions ,with 10 minutes of heating in thermostatic water bath for Zn2+ and 15 minutes for
Ni2+ then study involved effect of interferences and electrolyte with spectrophotometric determination in
different samples. The wave length for maximum absorbance of ion pair complex extracted was λmax=590nm for
Zn2+and 595nm for Ni2+complexes

Separation and extraction of chloroanion complex of Pb2+ by using crown ether 15C5 had been
investigated. This study includes determined hydrochloric acid and sodium chloride concentrations in
aqueous phase and Pb2+ ions concentration as well as shaking time, organic solvent effect, interferences,
electrolyte salts and methanol effect. Thermodynamic parameters shown the ion exchange reaction was
exothermic. In addition stoichiometry study shown that the ion pair complex extracted was 1:1:1 Cation:
Ligand: Anion. UV-spectrum of extracting complex show λmax=241nm. 15C5 used as spectrophotometric
reagent for the spectrophotometric determination of Pb2+ in different samples, %RSD=0.00672, D.L=
5.04483×10-5 ppm, ε= 2057.85 L.mol-1.cm-1, Sandell’s Sensitivity= 4.86×10-7 µg/cm2.

Extraction experiments for Ce+3 ion from aqueous phase by new laboratory prepared Azo derivation
as complexation agent 4- [N-(5-methyl isoxazol-3-yl)benezen sulfonamide azo]-1- Naphthol (AMBN) shows
the optimum conditions for this extraction method was (pH= 9) (10 minutes) shaking time and 100µg
(1.5x10-4M) concentration of Ce+3 ion in aqueous phase. Organic solvents effect study shows there is not
any linear relation between distribution ratio (D) for extraction of Ce+3 ion and dielectric constant (ε)for
organic solvents used but there is un effect for organic solvent structure on the extraction of Ce+3 ion and
distribution ratio (D) values. Stoichiometric studies demonstrated the more probable structure ion pair
complex extracted for Ce+3 was 1:1

The present research work describes the synthesis of new heterocyclic compounds using 4-nitro
benzaldhyde react with 4-amino acetophenone to afford 1(4-(4nitro benzylidene amino)phenyl) ethanon
copm.(1). Mercapto acetic acid reacts with comp.(1) in dry benzene afford 3(4-acetyl phenyl)-2-(4-nitro
phenyl)thiazolidin 4-one copm.(2), comp.(2)allowed to react with different aldehydes namely :4-bromo
benzaldhyde ;2-Chloro benzaldehyde to give the corresponding chalcones (3,4),the latter compounds react
with hydrazine hydrate 99% and phenyl hydrazine to give the pyrazole derivatives (5,6,7,8). Thiouurea
and urea react with chalcones (3,4) to give the thiazine and oxazine derivatives respectively (9,10,11,12),
hydroxylamine hydrochloride react with chalcones(3,4) in ethanol to afford isooxazole derivatives (13,14).
All compounds were confirmed by their FT-IR Spectrum ,Elemental analysis ,1H-NMR Spectrum for
some them and melting point.

This study include found the optimization conditions (flow rate of carrier gas, sample injection and
column temperature) for separation of mixture phenols and determination on packing column
intermediate polarity poly siloxane (OV-17) through using gas-liquid chromatography which is equipped
with a flame ionization detector (FID) and the nitrogen (N2) as carrier gas with flow rate 10ml.min-1 at
different column temperature ranged 10°C increasment with isothermal temperature system.
Temperature effect on chromatographic behavior were investigated of (phenol, m-aminophenol) on
packed column (OV-17), the results obtained showed normal chromatographic behavior through the
calculate of thermodynamic parameters (∆H°, ∆S°, ∆G°) ,as well as the resolution of system through
measure of number of a theoretical plate (N) and equivalent highest of one theoretical plate (HETP).
Programming temperature system were used by using gas liquid chromatography equipped with a
flame ionization detector and the N2 as mobile phase with a flow rate 30ml.min-1 at different column
temperature for separation mixture of phenols compounds such as (p-methoxyphenol, m-nitrophenol, m
aminophenol,o-aminophenol and phenol) on polar liquid stationary phase (DP5-S25) and non-polar
capillary column poly siloxane (OV-5). Resolution factor (RS) of studied mixture on (DP5-S25) and (OV-5)
with compared of results and find out of optimum resolution of phenols mixture.