Study of half-sandwich mono and dinuclear complexes of platinum group metals containing pyrazolyl pyridine analogues: Synthesis and spectral characterization

Journal of Chemical Sciences

Peng Wang¹  Kota Thirumala Prasad²  Venkateswara Rao Anna²  Kollipara Mohan Rao1² 

[1] Department of Chemistry, McMaster University, 1280 Main StreetWest, Hamilton, Ontario L8S 4M1, Canada$$;Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India$$

关键词: N-donor ligands;    mono and binuclear complexes;    ruthenium;    rhodium;    iridium.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

The chelating ligands 3-chloro-6-(3-pyridyl-1-pyrazolyl)pyridazine (𝑝𝑝-Cl) and 3,6-bis(3-pyridyl-1-pyrazolyl)pyridazine (bppp), were prepared by the condensation of pyridylpyrazole and 3,6-dichloropyridazine. The mononuclear complexes [(𝜂6-arene)Ru(𝑝𝑝-Cl)Cl]+ {𝜂6-arene = C6H6 (1); 𝑝-iPrC6H4Me (2)}, [(𝜂5-C5Me5)M(𝑝𝑝-Cl)]+ {M = Rh (3); Ir (4)}, [(𝜂6-arene)Ru(𝑏𝑝𝑝𝑝)Cl]+ {𝜂6-arene = C6H6 (5); 𝑝-iPrC6H4Me (6)}, [(𝜂5-C5Me5)M(bppp)]+ {M =Rh (7); Ir (8)} as well as the binuclear complexes [{(𝜂6-arene)RuCl}2(bppp)]2+ {𝜂6 -arene =C6H6 (9); 𝑝-iPrC6H4Me (10)} and [{(𝜂5-C5Me5)MCl}2(bppp)]2+ {M = Rh (11); Ir (12)} have been synthesized from 3-chloro-6-(3-pyridyl-1-pyrazolyl)pyridazine (𝑝𝑝-Cl) or 3,6-bis(3-pyridyl-1-pyrazolyl)pyridazine (bppp) and the corresponding dimers [(𝜂6-arene)Ru(𝜇-Cl)Cl]2 and [Cp∗M(𝜇-Cl)Cl]2, respectively. All complexes were isolated as their hexafluorophosphate salts and characterized by IR, NMR, mass spectrometry and UV-visible spectroscopy. The molecular structures of [2]PF6 and [7]PF6 have been established by single crystal X-ray structure analysis.

【 授权许可】

Unknown