Synthesis, crystal structures and properties of two Pd(II) and Pt(II) complexes involving 3,5-diphenylpyrazole and NO2 donor ligands

A pyrazolate bridged binuclear Pd(II) complex [Pd2(μ-dppz)2(Hida)2] · CH3OH · 2H2O (1) (dppz = 3,5-diphenylpyrazolate) with monoprotonated iminodiacetate (Hida) and a mononuclear Pt(II) complex containing Hdppz and 2,6-pyridinedicarboxylate (2,6-dipic) [Pt(Hdppz)(2,6-dipic)] · CH3OH (2) have been synthesized and characterized by elemental analysis, 1H NMR, ESI-MS and single crystal X-ray diffraction studies. The molecular packing for 1 shows a 2D network while that for 2 constitutes a left-handed 1D helix. Moderate luminescence property and antimicrobial activity against Bacillus subtilis have been noted for both.

A binuclear Pd(II) complex [Pd2(μ-dppz)2(Hida)2] ·  CH3OH · 2H2O (1) and a mononuclear Pt(II) complex [Pt(Hdppz)(2,6-dipic)] · CH3OH (2), where dppz = 3,5-diphenylpyrazolate, ida = iminodiacetate and 2,6-dipic = 2,6-pyridinedicarboxylate have been synthesized and structurally characterized. Complex 1 forms a 2D network, whereas complex 2 forms a 1D helical network. The luminescence property and antimicrobial activity of the complexes are also investigated.Figure optionsDownload as PowerPoint slide