Novel rhenium(II) complex of 2,3,5,6-tetra(2-pyridyl)pyrazine — Synthesis, X-ray studies, spectroscopic characterization and DFT calculations

A novel rhenium complex of multi-dentate ligand 2,3,5,6-tetra(2-pyridyl)pyrazine – [ReCl(tppz)(PPh3)2][ReO4] – has been synthesized and characterised spectroscopically and structurally. The electronic spectrum of [ReCl(tppz)(PPh3)2][ReO4] has been investigated at the TDDFT level employing B3LYP functional in combination with LANL2DZ.