Synthesis, Characterization and Crystal Structures of Mixed-Ligand Complexes of [Cu(bipy)2N3(ClO4)] and [Cu(5,5’-DiMebipy)2(N3)](ClO4)

https://doi.org/10.22146/ijc.21139

Oluwafunmilayo Florence Adekunle(1*), Ray John Butcher(2), Oladapo Bakare(3), Joseph Anthony Orighomisan Woods(4), Olusegun Ayobami Odunola(5)

(1) Department of Chemistry, Howard University, 525 College Street, Washington DC
(2) Department of Chemistry, Howard University, 525 College Street, Washington DC
(3) Department of Chemistry, Howard University, 525 College Street, Washington DC
(4) Department of Chemistry, University of Ibadan, Ibadan, Oyo-State
(5) Department of Chemistry, Hallmark University, Ijebu-Itele, Ogun-State
(*) Corresponding Author

Abstract


Two mixed –ligand complexes [Cu(bipy)2N3(ClO4)] and [Cu(5,5’-DiMebipy)2(N3)](ClO4) have been prepared and characterized. The compounds were characterized by elemental analyses, IR and UV-Visible spectroscopy, room temperature magnetic susceptibility measurements, and conductivity measurement, while the solid-state structures have been established by single-crystal X-ray diffraction analyses. [Cu(bipy)2N3(ClO4)]crystallizes in the monoclinic space group P21/c with cell constants a = 16.9027(3) Å, b = 7.59087(9) Å, c = 17.2614(3) Å, β = 111.2808(19)° and Z = 4. [Cu(5,5’-DiMebipy)2(N3)](ClO4) also crystallizes in the monoclinic space group P21/c with the cell constants a = 16.0312(11) Å, b = 7.9889(5) Å, c = 20.7167(18) Å, β = 110.285(8)° and Z = 4. The UV-Vis spectra and X-ray determination indicate that [Cu(bipy)2N3(OClO3)] is distorted octahedral ligand field and non-electrolyte in nature while [Cu(5,5’-DiMebipy)2(N3)](ClO4) is a square pyramidal five coordinate complex and a 1:1 electrolyte. The magnetic moments of the two complexes in the range 1.78–1.83 B.M. reveal a single unpaired electron with a slight orbital contribution.

Keywords


monoclinic; electronic spectra; electrolyte; 2,2’-bipyridyl; X-ray structure

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DOI: https://doi.org/10.22146/ijc.21139

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