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Register a new userSynthesis of schiff base N2O5 and their using in solvent extraction of Ag+, Cu2+ and pb2+ and studying synergistic extraction of Cu2
تحضير أساس شيف من النوع N2O5 و استخدامه في الاستخلاص المذيبي لايونات الفضة و النحاس و الرصاص و دراسة التأثير التآزري لاستخلاص النحاس
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Damascus University ورقة بحثية
Publication date
2012
fields
Chemistry
and research's language is
العربية
Created by
Shamra Editor
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صنعنا أساس شيف حلقياً يحتوي على ذرات مانحة من النوع N2O5 من تكاثف ثنائي الالدهيد (I :( ) بيس- 7,1 ' 6-6 - ميتوكسي-2 -فورميل فينيل)-1,4,7,10,13 - بنتا أوكسا تري ديكـان مـع ثنـائي ' الأمين 4,4 - أوكسي ثنائي انيلين.
In this research we have synthesized a new macrocyclic Schiff base containing N2O5 donor atomes which was prepared by reaction of 1,7- bis (6- methoxy - 2 - formyl phenyl)-1,4,7,10,13-penta oxa tridecane with 4',4- oxy dianiline.
References used
Nataliya, E., Borisova, D., Yuri A. 2007. Metal-free methods in the synthesis of macrocyclic schiff bases, Chem. Rev., 107, 46-79
Scott, A., Sall, Y. 2011. Metal-Free and Dicopper (II) Complexes of Schiff Base [2þ2] Macrocycles Derived from 2, 20- Iminobisbenzaldehyde: Syntheses, Structures, and Electro chemistry, Inorg. Chem. ( 50) 3697–3706
Shokova, E., Kovalev, V. 2008. Reactions of 2-Hydroxy-5-(1-adamantyl) benzene-1, 3-dicarbaldehyde with Ethane-1,2-diamine, trans-Cyclohexane- 1,2-diamine, and N- (2-Aminoethyl) ethane-1,2-diamine. Russian. Journal of General Chemistry, (78). 2082–2093
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New Schiff base (H2L) containing nitrogen-sulfur-oxygen atoms was
synthesized by reaction of α,α'-bis(5- Bromo-2-carboxyaldehyde phenoxy)-1.4-
xylene with aminothiophenol. Transport of copper ion across a bulk
chloroform membrane containing Schiff
base ligand (H2L) as carrier has been
studied. The parameters influencing the transport efficiency such as
composition of receiving phase, pH of the feed phase, carrier concentration in
the membrane, EDTA concentration in the receiving phase, effect of
temperature and time dependency of the process were studied and discussed.
The amount of copper transport through the liquid membrane after 48 min.,
arrived to 100% at temperature 58°C.
In this research we have synthesized a new macrocyclic Schiff base (II)
containing nitrogen- oxygen donor atoms which was designed and synthesized
by reaction of: 1,4– bis (6',6'- methoxy -3- formyl phenyl)-1,4- dioxa butane (I).
Identification of
this macrocyclic schiff base: (II) 1,16- Diaza–[3,6;11,14-di
(6',6'- methoxy phenyl)]-7,10,19,22 - tetraoxa cyclo tetra icozane-15,1dien was
determined by (LC-MS) and spectroscopy (IR). The liquid- liquid extraction of
metal such as Zn2+, Pb2+ and Ni2+ from aqueous phase to organic phase which
doesn't in water. The effect of chloroform and dichloromethane as organic
solvents over the metal extractions was investigated at 25± 0.10C by using
atomic absorption Spectrometer and extraction percentage was calculated.
This work was focused on the synthesis of tetradentate Schiff bases which
were prepared by condensation of salicylaldehyde with 1,4-diaminobenzene
and 1,3-diaminobenzene. The Schiff base ligands were checked by different
spectral technique (GC-MS,
1H-NMR, IR). The influences of shaking time on
the extraction of Cu (II) using solvent extraction technique was studied. Then
the Kinitic parameters were calculated from schemes which give best line
through drawing log (a-x) vs time or 1/(a-x) vs time or [Cu2+] vs time, whereas
(a-x) represents Cu(II) concentration in water phase and from it (n) reaction
order, (K) reaction rate constant (t1/2) reaction half between prepared ligand
and Cu (II) were calculated.
Separation with solvent extraction of Cu(II), Hg(II), and Cr(III) from
aqueous solution using the ligend (HL) as a new extractant has been studied.
The new acyclic Schiff Base (HL) was synthesized by reaction of 5-bromosalicylaldehyde
with 2-(2-Am
inoethyl)pyridine. The structure of the new
compound (HL) was confirmed by using FT-IR spectra, 1H-NMR and 13CNMR
spectra and mass spectra (MS). The effect of chloroform and
dichloromethan as organic solvents in the metal extractions was investigated at
20oC by using UV-visible Spectrometry. The influence of pH, ligand
concentration, shaking time and ratio of aqueous-to-organic phases on
extraction yield was tested at 20oC. The extractability of the tested metal ions
were evaluated.
A new acyclic Schiff Base(II), containing nitrogen-oxygen donor atoms was
synthesized by reaction of 1,2-Bis (5-bromo-2-formyl-phenoxy) ethane with 2-
(2-Aminoethyl)pyridine and characterized. The liquid-liquid extraction of
transition metals such
as Cu+2, Cr+3 and Uranyl-picrate (UO2)+2 from aqueous
phase to the organic phase was carried out using the novel ligand. The effect of
chloroform and nitrobenzene as organic solvents on the metal extractions was
investigated at 20oC by using Atomic Absorption and UV-visible
Spectrophotometry. The influence of pH, ligand concentration, ionic strength,
shaking time and ratio of aqueous-to-organic phases on extraction yield was
tested at 20oC. The extractability of the tested metal ions were valuated.
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