Synthesis and characterization of novel M(II) (M= Co(II), Ni(II), Cu(II), Zn(II) or Cd(II)) complexes with N,O-donor ligand (E)-1- (1-(1H-pyrrol-2-yl)ethylidene)carbonohydrazide (H5L)
نویسندگان
چکیده
The Schiff bases (H3L), derived from 2-acetylpyrrole and carbonohydrazide, and its reactions with some transition metal ions (Co(II), Ni(II), Cu(II), Zn(II) and Cd(II)) afforded complexes of formulae [M(H5LA)2(H2O)x]∙2(NO3)∙(CH3CN)z∙(H2O)y-x (M= Co, Ni, Cu or Zn ; 0 ≤ x < y ≤ 3, z = 0 or 1) and {Cd(H4LA)(NO3)}n. These compounds have been characterized by means of elemental analysis, UV–Vis spectroscopy, IR spectroscopy, 1 H and 13 C NMR, molar conductance and room temperature magnetic measurements. Single crystal X-ray analysis of the cadmium complex {Cd(H4LA)(NO3)}n has revealed the nature of the structure with the space group C2/c. The cadmium (II) ion is six-coordinated. The coordination polyhedron of the cadmium complex can be best described as a distorted trigonal antiprism.
منابع مشابه
Synthesis and spectral characterization of naphthyldihydrazones derived from some 1,3- dicarbonyl compounds and their Ni(II), Cu(II) and Zn(II) complexes
The coupling of tetrazotised 1,8-diaminonaphthalene with 1,3-dicarbonyl compounds [acetylacetone,methylacetoacetate and acetoacetanilide] yielded a new series of tetradentate ligand systems. Analytical, IR,1H NMR and mass spectral data indicate that the compounds exist in the intramolecularly hydrogen bondeddihydrazone form. Dibasic tetradentate N2O2 coordination of these compounds in their [ML...
متن کاملNew Tetraaza Schiff Base Ligands and Their Complexes: Synthesis, Characterization and Thermodynamic Studies
Some new symmetrical tetraaza Schiff base ligands containing 2-quinolinecarboxaldehyde moiety formed from condensation reaction of 2-quinolinecarboxaldehyde and o-phenylenediamine derivatives, such as N, Nˊ-bis(2-quinolylmethylidene)-4-methoxy-1, 2-phenylenediimine (L1), N, Nˊ-bis(2-quinolylmethylidene)-4-methy-1, 2-phenylenediimine (L2), N, Nˊ-bis(2-quinolylmethylidene)-4-chloro-1, 2-phenylene...
متن کاملTemplate Synthesis of Un-Symmetrical Tetradentate Schiff Base Complexes of Ni(II), Co(II), Zn(II) and X-ray Structure of Ni(II) Complex
Metal complexes, ML (M=Ni, Cu, Co and Zn) of unsymmetrical tetradentate schiff base have been synthesized by the template reaction of the half-units N-(1-hydroxy-2-acetonaphthone)-1-amino-2-phenyleneimine)(HL1) with 2-Pyrroleca-rbaldehyde. The complexes have been characterized by elemental analysis, IR, 1H NMR and UV spectroscopy. The crystal structure of the Ni(II) complex has been determine...
متن کاملSynthesis, Characterization and Theoretical Studies of a New Macroacyclic Schiff-Base Ligand Containing Piperazine Moiety and Related Mn(II), Cu(II), Ni(II) and Cd(II) Complexes
Four new [NiH2L](ClO4)2 (1), [CuH2L](ClO4)2 (2), [MnH2L](ClO4)2 (3) and [CdH2L](ClO4)2 (4), complexes were prepared by the reaction of a new Schiff base ligand and Cu(II), Ni(II), Mn (II) and Zn (II) metal ions in equemolar ratios. The ligand, H2L was synthesized by reaction of 1, 4- bis (2- formylphenyl) piperazine and ethanol amine and characterized with IR and 1H,13C NMR spectroscopy. All co...
متن کاملSynthesis, spectroscopic investigation and coductometry of a new hexadentate symmetric Schiff base ligand containing N2O2S2 donor atoms and related complexes with Cd(II), Zn(II), Co(II) and Mn (II) metal ions
In this paper, we report the synthesis and characterization of a new symmetric macroacyclic Schiff base ligand (H2L) and related complexes with different metals. (H2L) was synthesized by the one pot condensation reaction of 2-[2-(2-formyl phenoxy)ethoxy]benzaldehyde and 2-aminobenzenethiol in a 1:2 molar ratio. The acyclic Schiff base was characterized by IR, NMR spectroscopy and elemental anal...
متن کامل