| Autor: |
Maji, Milan, Chatterjee, Madhumita, Ghosh, Saktiprosad, Kumar Chattopadhyay, Shyamal, Wu, Bo-Mu, C. W. Mak, Thomas |
| Zdroj: |
Journal of the Chemical Society, Dalton Transactions; January 21, 1999, Vol. 1999 Issue: 2 p135-140, 6p |
| Abstrakt: |
A series of ruthenium(II) complexes of the NNS donor ligand methyl 2-pyridyl ketone 4-(4-tolyl)thiosemicarbazone (HL) has been synthesized using RuCl3·xH2O and [Ru(PPh3)3Cl2]: [Ru(HL)2][ClO4]2 1, [Ru(L)(PPh3)2Cl] 2, [Ru(HL)(PPh3)2Cl]Cl 3, [Ru(HL)(PPh3)2Cl]PF6 4, [Ru(L)(PPh3)(bpy)]PF6 5, [Ru(L)(PPh3)(dppe)]PF6 6, [Ru(HL)(PPh3)(pic)]PF6 7 and [Ru(HL)(PPh3)(mpi)]Cl2 8 [where bpy 4;= 4;2,2′-bipyridine, dppe 4;= 4;1,2-bis(diphenylphosphino)ethane, Hpic 4;= 4;pyridine-2-carboxylic acid, mpi 4;= 4;methyl(2-pyridyl)methyleneimine]. Chemical and electrochemical studies have been carried out. Structures of the compounds 3·CH2Cl2 3 and 8·CH2Cl2·3H2O have been determined by single crystal X-ray diffraction. The thione form of the ligand (HL) is chelated to the ruthenium centre through the pyridine nitrogen, imine nitrogen and the thione sulfur atom. The existence of a new unstable ligand methyl(2-pyridyl)methyleneimine (mpi) co-ordinated to RuII through the pyridine and imine nitrogen atoms was confirmed from the crystal structure of compound 8. |
| Databáze: |
Supplemental Index |
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