Nickel Complexes of 2,3,5,6‐tetra‐(2‐pyridyl)pyrazine Containing [Ln(NO3)5]2− [Ln(III)=Nd, Eu, Gd, Tb, Dy, Er] as Counterions‐Syntheses, Structures and Luminescent Properties

Abstract

AbstractSolvothermal reaction of [Ni(tppz)2](NO3)2 with Ln(NO3)3 ⋅ 6H2O afforded a 3d–4f heterometallic coordination complexes [Ni(tppz)2][Ln(NO3)5] ((where tppz = 2,3,5,6‐tetra(2‐pyridyl) pyrazine and Ln(III) = Nd (1), Eu (2), Gd (3), Tb (4), Dy (5), Er (6)). The complexes were characterized by elemental analysis, infrared spectroscopy, single‐crystal X‐ray diffraction, and powder X‐ray diffraction. Moreover, UV‐Vis absorption properties of 1–6 and solid‐state luminescence properties of 2 and 4 are also discussed.