Synthesis and Characterization of Cu(II), Ni(II), Co(II),Mn(II), Zn(II), Ru(III), Hf(IV) and ZrO(II) Complexes of 2-Thiophenylidene-N-4-methoxy Anilinoacetohydrazone

• Autorzy: El-Saied F. A , Abou El-Enein S. A. , Emam S. M. , El-Shater H. A.
• Języki publikacji: EN

Abstrakty

EN

A new hydrazone ligand (HL), [2-(4-methoxyphenylamino)-N'-(thio phen-2-yl-methy - lene)acetohydrazide], was prepared and characterized. The ligand reacted with Cu(II), Ni(II), Co(II), Mn(II), Zn(II), Hf(IV), Ru(III) and ZrO(II) ions to yield mononuclear complexes. The obtained metal complexes have been characterized using elemental and thermal analyses (TG and DTA), IR, UV-Vis and ESR as well as magnetic moment and molar conductance measurements. The results showed that the hydrazone behaves as a neutral bidentate ligand which coordinates with the metal ions via the thiophene sulphur atom and imido N-H as in case of complexes of the general formula: [M(HL)2X2]×nH2O, where M = Cu(II), X = OAc, n = 2; M = Co(II), X = Cl and Br, n = 0, 1, re spec tively; M = Ni(II), X = OAc, n = 1; M = Mn(II), X = OAc, n = 1; M = Zn(II), X = OAc, n = 0; M = ZrO(II), X = Cl, n = 5; [M(HL)2(NO3)]×NO3×nH2O, where M = Co(II), n = 1; M = Zn(II), n = 0; [M(HL)X2]×nH2O, where M = Cu(II), X = Cl, n = 1; M = Co(II), X = OAc, n = 1 and [Ru(HL)2Cl2]Cl. The ligand also coordinates via the carbonyl oxygen atom and azomethine ni tro gen atom as in case of [Cu(HL)(NO3)]NO3×1.5H2O complex and via the carbonyl oxygen atom and the aniline N-H as in case of complexes [Ni(HL)Cl2]×H2O and [Ni(HL)2(NO3)]×NO3×4H2O. As a tridentate monobasic ligand HL co or di nates through the thiophene sul phur atom, azomethine ni tro gen atom and the enolic ox y gen atom as in case of complex [Hf(L)Cl3]×3H2O. The geometrical shapes of complexes also have been elucidated. The thermal behavior of some metal complexes has also been studied using TG and DTA.

Słowa kluczowe

EN

Schiff's bases; metal complexes; spectral measurements and thermal analyses

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2009
• Tom: Vol. 83, nr 11
• Strony: 1871--1883
• Opis fizyczny: Bibliogr. 45 poz., rys.

Twórcy

autor

El-Saied F. A

autor

Abou El-Enein S. A.

autor

Emam S. M.

autor

El-Shater H. A.

• Chemistry Department, Faculty of Science, El-Menoufia University, Shebin El-Kom, Egypt,

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