Synthesis, crystal structures and anionic effect on the formation of Cd(II) complexes of 4′-(4-Methylphenyl)-2,2′:6′,2″-terpyridine ligand

Article type: Research Article

Authors: Saghatforoush, Lotfali^*

Affiliations: Department of Chemistry, Payame Noor University, Tehran, Iran

Correspondence: [*] Correspondence to: Lotfali Saghatforoush, Department of Chemistry, Payame Noor University, 19395–3697 Tehran,Iran. Fax: +98 44 36332556; E-mails: [email protected]; [email protected].

Abstract: A facile synthetic method has been used to produce the five coordinated and six coordinated Cd(II) complexes of 4′-(4-methylphenyl)-2,2′:6′,2″-terpyridine (Mephtpy), [Cd(Mephtpy)Br2] (1) and [Cd(MPhtpy)2](ClO4)2 (2). The complexes are characterized by common physical methods and structurally analyzed by single crystal X-ray diffraction. The change of coordination ability of anion influences the metal/ligand stoichiometric ratio and therefore the packing system of the final product. For example, with Br -  the metal to ligand ratio was 1:1 and with ClO4 − was 1:2. The single crystal X-ray structures revealed that geometry in 1 is square-pyramidal while in 2 is distorted octahedral.

Keywords: Cadmium(II) complexes, terpyridine, crystal structure, thermal property

DOI: 10.3233/MGC-140158

Journal: Main Group Chemistry, vol. 14, no. 2, pp. 115-125, 2015