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- Bbulal Das
  
  Articles written in Journal of Chemical Sciences
- Volume 124 Issue 2 March 2012 pp 411-419
  
  $\eta^5$ and $\eta^6$ - cyclic 𝜋-perimeter hydrocarbon platinum group metal complexes of 3-(2-pyridyl)pyrazole derived ligands with a pendant nitrile group: Syntheses, spectral and structural studies
  
  Gloria Sairem Venkateswara Rao Anna Peng Wang Bbulal Das Mohan Rao Kollipara
  
  More Details Abstract Fulltext PDF
  
  Reaction of two equivalents 4-{(3-(pyridine-2-yl) 1H-pyrazole-1-yl}methyl benzonitrile (L1) and 3-{(3-(pyridine-2-yl)1H-pyrazole-1-yl}methyl benzonitrile (L2) with one equivalent of [($\eta^6$-arene)Ru(𝜇- Cl)Cl]₂ and [Cp^∗M(𝜇-Cl)Cl]₂ in methanol yielded mononuclear complexes of the formulae [($\eta^6$-arene)Ru(L1/L2)Cl]BF₄{arene =C₆H₆ (1, 6); C₁₀H₁₄ (2, 7); C₆Me₆ (3, 8)} and [Cp^∗M(L1/L2)Cl]PF₆/BF₄ {Cp^∗= $\eta^5$-C₅Me₅, M=Rh (4, 8); Ir (5, 10)}. These complexes are characterized by IR, ¹H NMR and identities of the structure are established by single crystal XRD studies of some of the representative complexes. It is confirmed from the spectral studies that the nitrile group is not taking part in complexation; instead it remains as a free pendant group only.

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