C.V.
Name: Prof. Dr. Samy M. Abu-El-Wafa
Date of Birth: 13/3/1950
Place of Birth: dikirniss dakahlia –
Qualifications: 1- B. Sc. (Major Chemistry) very good, Faculty of Science,
2- M. Sc. (Inorganic Chemistry) Faculty of Science,
3- Ph.D. (Spectroscopy and Electrochemistry) Faculty of Girls,
Promotion of Jobs and Experience: 1- Demonstrator in Department of Chemistry, Faculty of
2- Lecture assistant Department of Chemistry, Faculty of
3- Lecture of Inorganic and Analytical Chemistry in Department of Chemistry, Faculty of
4- Associate Professor of Inorganic and Analytical Chemistry in Department of Chemistry, Faculty of
5- Professor of Inorganic and Analytical Chemistry in Department of Chemistry, Faculty of Education Ain Shams University since 28/5/ 1990 and up till now.
6- Referee's member in Higher Education Council Universities, Al-Azhar University and High Quality Controll Organization for Drugs and Research for promotion of professor and associate professor.
7- The first Pioneer in and all
Major Interest: 1- Teaching and doing research in the field of spectroscopy of coordination compounds (ESR, Mass, FAB, Mössbauer, NMR, IR, UV/Vis. …), some example from the list of publications (about 140 publications in the field of spectroscopy of inorganic complexes and drugs).
1- Formation of novel mono- and multi-nuclear complexes of Mn(II), Co(II) and Cu(II) with bis azo-dianils containing the pyrimidine moiety: thermal, magnetic and spectral studies. Abu-El-Wafa, S. M.; El-Wakiel, N. A.; Issa, R. M.; Mansour, R. A. Chemistry Department, Faculty of Science,
Abstract
Mn(II), Co(II) and Cu(II) complexes with some bisazo-dianils (compds. having two N:N and two HC:N groups) contg. the pyrimidine moiety were prepd. and characterized by elemental and thermal analyses, molar conductance and magnetic moment detn. as well as IR, electronic absorption and ESR spectra. The data revealed different geometries around the metal ions, depending on both the ligand and metal ion.
2-Formation of iron(III) cluster complexes with a new (N2O2) Schiff base. Saleh, Akila A.; Tawfik, Abdelrazek M.; Abu-El-Wafa, Samy M.; Osman, Hoda F. Chemistry Department, Faculty of Education,
Abstract
Two new series of Fe(III) Schiff-base complexes prepd. from formylhydroxyacetophenone-alkylenediamine Schiff bases I and II (n = 2, 3 for both), were prepd. and characterized by elemental and thermogravimetric analyses, IR, electronic, ESR and Mossbauer spectra. The mononuclear and multinuclear Fe(III) complexes possess octahedral, pseudo-octahedral or pseudo-tetrahedral geometries around Fe(III), depending on the nature of the Schiff-base ligand used.
3- Mononuclear and homobinuclear vanadium(IV), chromium(III), molybdenum(III), and uranium(VI) chelates with ortho-cresolphthalein complexone. Ismail, Tarek M.; Khedr, Abdalla M.; Abu-El-Wafa, Samy M.; Issa, Raafat M. Chemistry Department, Faculty of Education,
Abstract
Mononuclear and homobinuclear o-cresolphthalein complexone complexes with VO2+, Cr3+, Mo2+, and UO22+ were prepd. and their structures studied. The empirical formulas, the mode of bonding, and the geometry of the complexes were obtained from elemental and thermal analyses, IR, electronic and ESR spectra, magnetic moment detns.,
4- Hetero-binuclear chelates of Mn(II), Co(II) and Cu(II) o-cresolphthalein complexonates with other metal ions. Abu El-Wafa, Samy M.; Tawfik, Abdel Razak M.; Ismail, Tarek M. A. Chemistry Department, Faculty of Education,
Abstract
Heterobinuclear metal chelates of Mn2+, Co2+ or Cu2+ and some transition metal ions with o-cresolphthalein complexone were prepd. and characterized. Elemental analyses are in agreement with proposed formulas. Thermal analyses (TGA and DTA) were used to det. the degrdn. products; some thermodn. parameters were calcd. IR and UV-visible spectra identified the mode of bonding between the metal ions and the ligand as well as its geometry. Magnetic moment detn. and ESR spectra of the heterobinuclear complex revealed some antiferromagnetic interaction between the metal ions, which depends mainly on the two metal ions forming the chelate. Electrochem. studies of [DC-polarog. and cyclic voltammetry (CV)] confirmed the existence and the nature of the metal ions in the chelate.
5- Dioxouranium(VI) N2O2 Schiff's base complexes. IR, electronic, 1H NMR and mass spectra fragmentation studies. Abu-El-Wafa, S. M.; El-Baradie, K. Y.; Issa, R. M. Faculty of Education,
Abstract
Complexes of UO22+ with dianionic tetradentate Schiff base ligands, RCH:N(CH2)nN:CHR (R = 2-hydroxy-1-naphthyl, n = 2-10) and bis(2-hydroxy-1-naphthylmethylene)-2-hydroxy-1,3-propanediamine, were synthesized and characterized by their elemental anal., conductometric titrn., IR, 1H NMR, electronic spectra and mass spectra. Mechanisms leading to the important different ions are suggested and identified.
6- Preparation and spectroscopic characterization of copper(II), cobalt(II) and manganese(II) chelates with multidentate bisazodianils as ligands. Issa, R. M.; Abu-El-Wafa, S. M.; El-Hefnawy, G. B.; El-Wakeil, Nadia A. Chemistry Department, Faculty of Science,
Abstract
Mn(II), Co(II) and Cu(II) complexes with a no. of newly prepd. bisazodianil ligands were prepd. The complexes were characterized by elemental and thermal analyses, IR, electronic and ESR spectra. The compn. and geometry of the complexes under study are established.
7- Spectroscopic studies of new asymmetrical Schiff base compounds derived from 7-formyl-8-hydroxyquinoline with aliphatic and aromatic diamines and b -diketones. Abd-Elhay, H.; Abu-El-Wafa, S. M.; Ismail, T. M. A. Chemistry Department, Faculty of Education,
Abstract
The electronic absorption spectra of some new asym. Schiff bases derived from 7-formyl-8-hydroxyquinoline(FHQ) with different diamines and b-diketones are studied in org. solvents of varying polarities. The important bands in the IR spectra of the compds. as well as the main signals of the 1H NMR spectra are discussed in relation to mol. structure. Mass spectra and the mechanism leading to different fragment ions of the compds. are also discussed.
8- Synthesis and characterization of Cu(II) complexes with new mandelic hydrazones. Issa, Y. M.; Abdel-Latif, S. A.; Abu-El-Wafa, S. M.; Abdel-Salam, H. A. Chemistry Department, Faculty of Science,
Abstract
Cu(II) chelates of new derivs. of mandelic hydrazones were synthesized and characterized using elemental and TG analyses, IR, UV-Visible and EPR spectra. X-ray diffraction patterns were used to study their structure and geometry. The study revealed that Cu(II) complexes can exhibit square planar, tetrahedral or distorted octahedral structure depending on the nature of the ligands used and the stoichiometric ratio between the metal and ligand.
9-Preparation and characterization of Cu(II)-lignocaine complex. Indirect estimation of lignocaine in pharmaceutical preparations by atomic absorption spectroscopy (AAS). El-Ries, M. A.; Abou Attia, F. M.; Abdel-Gawad, F. M.; Abu El-Wafa, S. M.. Natl. Organizations for Drug Control and Research,
Abstract
The aim of the present work was to prep. the solid Cu-lignocaine complex and to characterize it by elemental anal., TGA, and conductance measurements. The bonding between Cu(II) and lignocaine was confirmed by IR and 1H-NMR spectra. Electronic and EPR spectral studies were conducted to explain the geometry of lignocaine mols. around the Cu(II) ion. An indirect method for the detn. of lignocaine in pharmaceutical prepns. by at. absorption spectroscopy is also explained.
10- Mass spectral fragmentation studies of some high-valent dimeric manganese complexes with tetradentate Schiff base ligands. Abu-El-Wafa, S. M.; Abdel-Megeed, M. F.; Issa, R. M. Fac. Educ., Ain Shams Univ.,
Abstract
Mass spectra of some high valent Mn complexes with tetradentate Schiff base as ligand [Mn(SB)O2] and [Mn2(SB)2O(OH)] were measured. The mechanisms leading to different fragment ions were suggested. The fragmentation pattern of dimeric MnIV/MnIV species were completely different from those of mixed MnIII/MnIV species. One of the fragmentation modes of MnIV/MnIV is characterized by loss of metal, accomplished with H transfer to give a typical fragmentation pattern of the corresponding ligand. The salen and naphen complexes were also characterized by homolytic cleavage of the central C-C bond, while the saltm and naphtm complexes are distinguished by unusual fragmentation due to the loss of stable allyl radical.
11-Preparation and characterization of copper(II) keto or enol stabilized phosphonium complexes. Tawfik, A. M.; Abu-El-Wafa, S. M.; El-Zawawi, F. M.; Issa, R. M. Chem. Dep., Fac. Educa.,
Abstract
Two new series of copper(II) complexes were prepd. from the reaction of the salts (L) g-chloroacetonyltriphenylphosphonium chloride, p-bromophenacyltriphenylphosphonium bromide and p-nitrophenacyltriphenylphosphonium bromide with CuBr2. The complexes have the general formulae [Cu(HL)2Br2] and [CuLBr]2 and were characterized by elemental anal. and conductance measurements. The IR spectra of the complexes showed that the C:O group coordinates to the central copper(II) ion in the first type, whereas in the second type the enolic OH group is deprotonated on complex formation. Electronic and ESR spectra of the complexes were used to study the spatial distribution of the ligands around the central copper(II) ion.
12-Formation of chlorovanadium(III) and vanadium(IV)-N2O2-Schiff base complexes spectral and magnetic studies. Abu-El-Wafa, S. M.; Issa, R. M. Fac. Educ., Ain Shams Univ.,
Abstract
VLCl (H2L = bis(salicylidene)- and bis(2-hydroxynaphthylmethyl)ethylenediamine) and V2L1Cl4 (H2L1 = bis(2-hydroxy-1-naphthylmethylene)-1,9-nonanediamine and p-biphenyldiamine) were prepd. and oxidized by O to give VLCl2 and V2LCl6. VQCl2 (H2Q = bis(salicylidene)- and bis(2-hydroxyphenylmethylene)acetylacetone, bis(2-hydroxynaphthylmethylene)-1,3-propanediamine) and V2Q1Cl6 (H2Q1 = bis(salicylidene)-1,4-butanediamine and- biphenyldiamine, bis(2-hydroxynaphthylmethylene)-1,5-pentanediamine, -1,10-decanediamine) were prepd. Base hydrolysis of V(naphen)Cl2 (H2naphen = bis(2-hydroxy-1-naphthylmethylene)ethylenediamine) and V2(naphpent)Cl6 (H2naphpent = bis(2-hydroxy-1-naphthylmethylene)-1,5-pentanediamine) gave VO(naphen) and V2O2(naphpent)Cl2, resp. The V(IV) complexes have an octahedral structure.
13-Mass spectral fragmentation studies of some high-valent dimeric manganese complexes with tetradentate Schiff's base ligands. Abu-El-Wafa, S. M.; Abdel-Megreed, M. F.; Issa, R. M. Fac. Educ., Ain Shams Univ.,
Abstract
Mass spectra of [Mn(SB)O]2 (I; H2SB = bis(3-hydroxy-2-naphthylmethylene)ethanediamine and -1,3-propanediamine, bis(salicylidene)ethanediamine and -1,3-propanediamine) and [Mn2(SB)2O(OH)] (II) were measured and fully discussed. The mechanisms leading to important fragment ions are suggested. The fragmentation patterns of I were completely different from those of II. One of the fragmentation modes of I is characterized by loss of metal, accomplished with hydrogen transfer to give a fragmentation patterns typical of the corresponding ligand. Ethyenediamine Schiff base complexes are also characterized by homolytic cleavage of the central C-C bond, while the propanediamine Schiff base complexes are distinguished by unusual fragmentation due to the loss of a stable allyl radical.
14-Sulfito amine complexes of cobalt(III). Salib, Kamal A. R.; Abu El-Wafa, Samy M.; El-Maraghy, Salah B.; El-Sayed, Saied M. Fac. Educ., Ain Shams Univ.,
Abstract
[Co(pn)2(SO3)Cl]×H2O (pn = 1,2-propanediamine), [Co(pn)2(SO3)Cl]×4H2O×NaCl, [Co(pn)(en)(SO3)Cl]×H2O×NaCl, [Co(en)2(SO3)Br]×2H2O and [Co(pn)(en)(HSO3)2](SO3)0.5×3H2O×0.5Na2SO3 were prepd. using Na2SO3 and NaHSO3. The 2 types of products showed different and characterizing patterns of IR and UV-visible spectra. They both contain Co-SO3 linkages and the sulfite groups have similar or different site symmetries in the same compd.
15- Interaction of manganese(II) Schiff's base complexes with sulfur dioxide molecules. Abu-El Wafa, Samy M.; Issa, Raafat M. Fac. Educ., Ain Shams Univ.,
Abstract
The prepn. of [Mn(SB)SO2] [H2SB = tetradentate o-HOC6H4CH:N)2Z (Z = (CH2)2, (CH2)3, (CH2)4, o-C6H4, p-C6H4, p-C6H4C6H4), (RCH:N)2Z (R = 2-hydroxynaphthyl)] is reported. The complexes are characterized by elemental anal., IR, electronic spectra and conductance measurements. TGA of the complexes indicated that the SO2 mol. is thermally stable <150-160°C after which it is evolved and the complex decomps. The effective magnetic moments at room temp. of the complexes is 5.71-5.40 mB/Mn atom. ESR spectra of the complexes in CHCl3 soln. at 300 and 93 K suggest octahedral geometry around the Mn(II) ion.
16-Coordination chemical studies of some polymeric transition metal complexes with neomycin and their biological activity uses. Indirect determination of neomycin by atomic absorption spectroscopy (AAS). Abu-El-Wafa, Samy M.; El-Ries, Mohamed A.; Abou-Attia, Fikria M.; Issa, Raafat M. Fac. Educ., Ain Shams Univ.,
Abstract
A new series of polymeric [M(Neom)H2Ox]n complexes were prepd., where M = Co(II), Ni(II), Cu(II) or Zn(II) ions, Neom = neomycin and x = 2-4. The complexes were characterized by elemental anal., conductance and magnetic moment measurements. IR spectra indicated that the bonding between neomycin and transition metal ions takes place through M-O bonds. Electronic and EPR spectra of the solid complexes are measured in order to gain information about their structures and geometry. X-ray diffraction patterns indicated that the complexes are amorphous. The biol. activity of the complexes formed was tested towards eight microorganism and compared with the activity of neomycin itself. A new method is described for the indirect estn. of neomycin by at. absorption spectroscopy (AAS) using carbonate as an auxiliary ligand. The results obtained either for the pure form or in pharmaceutical formulations are accurate and precise.
17-Normal sulfites of metals. Salib, Kamal A. R.; El-Maraghy, Salah B.; Abu El-Wafa, Samy M.; El-Sayed, Saied M. Fac. Educ., Ain Shams Univ.,
Abstract
Normal sulfites of metals were prepd. by the reaction of metal salts with Na2S2O5, in aq. acid solns., to prevent the formation of basic sulfites. Visible spectra and magnetic moments show that the transition metal sulfites have distorted octahedral structures. The IR spectra showed that the sulfite groups act as O-bonded bridging ligands linking the metal atoms in polymeric chains.
18-Coordination chemical studies on copper(II) complexes of some derivatives of 4-hydroxy-2(1H)-quinolones. Hassanein, M.; Abu-el-Wafa, S. M.. Dep. Inorg. Chem., Natl. Res. Cent.,
Abstract
CuL.4H2O (H2L = I, R = COCH2COMe, R1 = Ph, Me) and [CuL1×2H2O]ClO4 (HL1 = I, R = COMe, R1 = Ph, Me, Et, R = C(Me):NNH2, R1 = Me) were prepd. and characterized by elemental anal., conductance, IR spectra and formation consts. Measurements of ligand field and ESR spectra as well as magnetic moments were also carried out. Generally, the obtained spectral results (electronic absorption energies and g values) showed that CuII ions are present in an axial elongated symmetry D4h (tetragonally distorted octahedron or square planar) depending on R. Moreover, the relatively low magnetic moment values (<1.74>mB) measured at room temp. and some calcd. G values (<4.0) style="">
19-The formation of a copper(II)-amikacin complex and its biological activity and uses. Indirect estimation of amikacin by atomic absorption spectroscopy (AAS). Abu-El-Wafa, Samy M.; El-Ries, Mohamed A.; Issa, Raafat M. Fac. Educ., Ain Shams Univ.,
Abstract
[CuL(H2O)3] (H2L = amikacin) was prepd. and characterized by elemental anal., TG and spectroscopic techniques (IR, electronic and ESR spectra). The spectral results obtained indicate distorted octahedral geometry around the Cu(II) ion. The orbital redn. factors K|| and K.perp. were calcd. Amikacin can be estd. indirectly by at. absorption spectroscopy using carbonate as an auxiliary ligand. [CuL(H2O)3] shows biol. activity towards 6 organisms. Amikacin is biol. active towards Sarcina lutea, whereas [CuL(H2O)3] is biol. inactive.
20-Formation of metformin complexes with some transition metal ions: their biological activity. Abu-El-Wafa, S. M.; El-Ries, M. A.; Ahmed, F. H. Chem. Dep., Fac. Educ.,
Abstract
ML2 (M = Co, Ni, Cu, Zn; HL = metformin) were prepd. and characterized by elemental anal., IR, UV, 1H NMR and EPR spectra, and conductance measurements, to study their structure and geometry. Their formation consts. were evaluated by potentiometric techniques. Their biol. activity towards microorganisms was tested and compared with metformin at different concns.
21-Preparation and characterization of cobalt(III) complexes of tetradentate N2O2 Schiff base ligands, IR, electronic, carbon-13 NMR, conductance, and magnetic studies. Abu-El-Wafa, Samy M.; El-Behairy, Mostafa A.; Issa, Raafat M. Fac. Educ., Ain Shams Univ.,
Abstract
[Co(SB)H2O]Z [I; H2SB = o-HOC6H4CH:NXN:CHC6H4OH-o (X = o-C6H4) or RCH:NXN:CHR (R = 2-hydroxynaphthyl, X = (CH2)2, (CH2)3, o-C6H4); Z = NO3, ClO4 or BPh4) were prepd. by air oxidn. of Co(II) salts in the presence of the Schiff bases and characterized by elemental anal., conductance measurements as well as IR, electronic and 13C NMR spectral techniques. The reaction of I with O was studied and discussed in terms of both the reaction configuration of the Co atom and the steric effects of substituents on the imine groups. I exhibit a square pyramidal structure which is supported by the results of magnetic moment measurements
22-Structural elucidation of the copper(II)-streptomycin complex. Indirect estimation of streptomycin by atomic absorption spectroscopy. El-Ries, M. A.; Abu El-Wafa, S. M.; Aly, F. A.; El-Behairy, M. A. Chem. Dep., Fac. Educ.,
Abstract
A Cu complex with streptomycin (I) was prepd. and characterized. Cu(II) bonds with I through the Cu-O bond. The indirect detn. of I sulfate by at. absorption spectroscopy was affected by the addn. of excess Cu2+ in slightly alk. medium and the unreacted Cu2+ sepd. as insol. carbonate. The concn. of I in its complex was then indirectly detd. from a calibration curve for std. CuSO4 solns. Beer's law was obeyed over 0.5-5 mg I.
23-High-valent manganese complexes of tetradentate Schiff base ligands. ESR-active and ESR-silent dimeric species. McAuliffe, C. A.; Parish, R. V.; Abu-El-Wafa, S. M.; Issa, R. M. Inst. Sci. Technol., Univ.
Abstract
[Mn(SB)(Me2CO)]Z (H2SB = o-HOC6H4CH:N(CH2)nN:CHC6H4-o-OH, n = 2, 3, and analogs derived from 3-hydroxy-2-naphthaldehyde; Z = NO3 or ClO4) were prepd. and characterized. The complexes are probably dimeric via bridging acetone ligands. Base hydrolysis of these complexes in CHCl3 yielded new dimeric species tentatively assigned as [MnIIIMnIV(SB)2(O)(OH)].H2O and [MnIV(SB)(O)]2.H2O. Elemental analyses, IR, electronic and ESR spectra, as well as cond. and room temp. magnetic susceptibility measurements are reported.
24-Structural elucidation of the copper(II)-streptomycin complex. Indirect estimation of streptomycin by atomic absorption spectroscopy. El-Ries, M. A.; Abu-El-Wafa, S. M.; Aly, F. A.; El-Behairy, M. A. Fac. Educ., Ain Shams Univ.,
Abstract
The neutral [Cu(II)-streptomycin.4 H2O] complex was prepd. and characterized by elemental anal., TGA, IR, electronic and ESR spectra. The bonding between Cu(II) and streptomycin (I) takes place through a Cu-O bond. The indirect estn. of I sulfate by at. absorption spectroscopy is affected by the addn. of an excess of cupric ions in slightly alk. medium; the unreacted copper is sepd. as insol. carbonate. The concn. of I in its product with copper is then indirectly detd. from a calibration curve for std. copper sulfate solns.
25-Unusual copper(III)-Schiff's base complexes. Abu-El-Wafa, S. M.; Issa, R. M.; McAuliffe, C. A. Fac. Educ., Ain Shams Univ.,
Abstract
[CuL(H2O)2]ClO4 [H2L = (2-HOC6H4CH:N)2Z, Z = (CH2)2, (CH2)3, (C6H4)2; (RCH:N)2Z, R = 2-hydroxynaphthyl] were prepd. by elemental anal., IR and electronic spectra. The prepd. complexes are compared with Cu(II) complexes of the same ligands. The room temp. magnetic susceptibility and the x-band EPR spectra of the 2 types of complexes showed different behavior. Cu(II) complexes were nonconducting whereas Cu(III) complexes gave a conductance corresponding to 1:1 electrolyte. This is the 1st report on the Cu(III) complexes with the tetradentate Schiff base ligands.
Minor Interest: Teaching all courses of Inorganic and analytical chemistry for under graduated and post graduated students.
Scientific and International Conference Missions: 1- Visiting Professor at UMIST (
2-: Participates in International copper symposium at
3-: Participates in International 24 th conference at
4-: British Council Scientific mission for six weeks at UMIST in 1986 to do high quality research with the late professor
Prizes and Activity: 1-high quality research
2-: encouragement state prize in inorganic chemistry (1989).
3-: first class merit of honor from the presidency 1995.
4-: A member in Egyptian chemical society and referee's of some international journals.
E- mail: abuelwafa__1@hotmail.com
smabuelwafa@yahoo.com
Mobile no.: 0122674884 , Home : +20227023037
Address: 12 street 300 , new maadi , flat 4,
Status: Married
Name of the wife: Nadia Fouad (B. Sc. Commerce 50 years old).
Children: (Dr.Mohammed [ student 21 years old] B. Sc. , pharmacy), ( Amr [student 20 years old]2 nd year communications' engineering) , ( Hossam , 18 years old , 2 nd year commerce, English ) and ( Atef 9 years old 3 rd year primary school).
Name of Reference:
1- Professor Dr. Raafat M. Issa (Father of Chemistry in
2- Professor Mohammed Fikry Ebied, Professor of catalysis, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt, Mobile no: +20128479727.
3-Prof. Dr. Mostafa Maher ( The Father of German Language in Egypt, Faculty of Allsson, Ain Shams University , Abbassia, Cairo, Egypt, Home Phone no: +2026237263.
4- Professor Dr. Musheira M. Swillam ,Professor 0f literature , MUST, 6th October City, Giza, Egypt, Mobile no:+20128200251.
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