Synthesis, photophysical, cyclic voltammetry properties, and molecular structure study of novel (5,10,15,20-tetratolylphenyl porphyrinato)zinc(II) with pyrazine

摘要: Abstract The precursor (5,10,15,20)-tetratolylporphyrin (H2TTP) (1) and Zn(II) complex (5,10,15,20)-tetratolylporphyrinato)zinc(II) [Zn(TTP)] (2) have been synthesized utilized to afford a novel (3) bearing pyrazine as fifth coordination site on axial position, i.e. (pyrazine)(5,10,15,20-tetratolylporphyrinato)zinc(II) hemi-pyrazine hemidichloromethane solvate [Zn(TTP) (pyz)]0.0.5(pyz.CH2Cl2). Photophysical, electrochemical X-ray diffraction were investigated. single-crystal analysis indicated that in (i) ion is penta coordinated, (ii) slight displacement of Zn atom by −0.28 A towards the ligand (pyrazine) (iii) crystal lattice made up two dimensional layers stabilised C−H…Cg intra- intermolecular interactions (Cg centroid pyrrole ring). Optical absorption studies revealed redshifted Soret (B) Q bands Zn-porphyrins complexes. Contrarily, hypsochromic shift emission spectra complexes noted compared H2TPP. Lifetime electrons (1–3) determined compared. Overall, this study would assist understanding impact incorporation at position optical electronic properties. Cyclic voltammetry (CV) was applied for behavior both 0.2 M Tetra-n-butyl ammonium perchlorate (TBAP) solution CH2Cl2. results confirmed potentials redox peaks more negative ca 60 mV caused ligand.