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4′-(2-Methylphenyl)-2,2′:6′,2″-terpyridine: coordination chemistry with Ni(II), Cu(II), Zn(II) and Ag(I)

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The synthesis of 4′-(2-methylphenyl)-2,2′:6′,2″-terpyridine (L) has been improved. The coordination chemistry of the ligand was explored using Ni(II), Cu(II), Zn(II), and Ag(I) ions. X-ray crystallography, elemental analysis, NMR, and mass spectrometry were used to characterize the 13 new compounds that have been synthesized. Under different reaction conditions, Ni(II), Cu(II), and Zn(II) produced discrete complexes, sometimes containing more than one metal ion, while Ag(I) furnished a polymeric spiral complex in which the central pyridine nitrogen of each terpyridine ligand bridges two Ag(I) ions. Crystallographically characterized complexes are [Ni(L)2]Cl2, [Ni2Cl4(L)2], [Ni(L)(OH2)3]Cl2, [Ni(L)2]Br2, [Cu(L)(OH2)(OSO3)], [Cu3Cl6(L)2], [Cu(L)(OH)(OH2)2]PF6, [Cu(L)2](OTf)2, [Cu(L)(OAc)2], [Zn(L)(OAc)2], [Zn(L)Cl2], [Zn(L)2](NO3)2, [{Ag2(μ-L)2(μ-NO3)} n ](NO3) n .
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Keywords: Terpyridine; coordination complexes; coordination equilibria; crystallography; supramolecular complexes

Document Type: Research Article

Affiliations: School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand

Publication date: April 3, 2019

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