Preparation and Characterization of some Transition Metal Complexes with Two Mixed Ligands Macrocyclic and Ligands PPh3

Fakhree, Falah M.; Dawood, Saad Kh.

doi:10.33899/rjs.2019.163294

	Preparation and Characterization of some Transition Metal Complexes with Two Mixed Ligands Macrocyclic and Ligands PPh3
Rafidain Journal of Science
Article 5, Volume 28, Issue 4, 2019, Pages 29-37 PDF (803.35 K)
Document Type: Research Paper
DOI: 10.33899/rjs.2019.163294
Authors
Falah M. Fakhree^* ¹; Saad Kh. Dawood²
¹Department of Nursing/ Bardarash Technical Institute/ Duhok Polytechnic University
²Department of Chemistry/ College of Science/ University of Mosul
Abstract
A new ligand (3,4,6,14,15,17,23,24-octaazatricyclo [17.3.1.1⁸,12] tetracosa-1(23),8(24),9,11, 19, 21- hexaene - 2,5,7,13,16,18 – hexaone), (CHT) was been prepared from the reaction of pyridine-2,6-dicarboxylic acid with semicarbazide using microwave irradiation in solid state. The ligand is reacted with some transition metal(II) ions to form complexes of the type [Co(CHT)]Cl₂, [Fe(CHT)Cl]Cl and [M(CHT)Cl₂] where (M=Mn(II), Ni(II), Cu(II) and Zn(II)). Complexes of the type [Ni(CHT)(PPh₃)]Cl₂ and [M(CHT)(PPh₃)Cl]Cl where (M=Mn(II), Fe(II), Co(II), Cu(II) and Zn(II)), were prepared by the reaction of the above complexes with triphenylphosphine(PPh₃) in a 1:1 molar ratio. All the complexes were characterized by (C,H,N) analysis, metal content analysis, molar conductance, magnetic moment measurements, electronic and IR spectroscopy, as well as the ligand was characterized by ¹H,¹³C -NMR. The electronic spectra and magnetic measurements indicate that the complexes have octahedral environment around the metal ions, except cobalt complex have square planer geometry.
Keywords
Macrocyclic Ligand; Microwave irradiation

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