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Table 1

From: Interaction of 2-aminopyrimidine with dichloro-[1-alkyl-2-(naphthylazo) imidazole]palladium(II) complexes : Kinetic and mechanistic studies

Pd(NN/)Cl2 103 [2-NH2- Pym]0 (mol dm-3) 103k obs (s-1) k2 (dm3 mol-1 s-1) k0 (s-1)
1a 1.00 3.28 2.53 0.67
  3.00 8.12   
  5.00 13.45   
  7.00 18.17   
  10.00 26.03   
1b 1.00 3.06 2.24 0.69
  3.00 7.32   
  5.00 11.70   
  7.00 16.43   
  10.00 23.11   
1c 1.00 3.35 2.68 0.61
  3.00 8.95   
  5.00 14.25   
  7.00 20.05   
  10.00 28.15   
  1.00 4.20   
2a 3.00 11.95 3.85 0.33
  5.00 19.33   
  7.00 27.35   
  10.00 38.80   
  1.00 3.76   
2b 3.00 10.52 3.65 0.11
  5.00 18.46   
  7.00 26.79   
  10.00 35.97   
2c 1.00 4.47 4.13 0.19
  3.00 13.06   
  5.00 19.65   
  7.00 29.52   
  10.00 41.63   
  1. Observed pseudo-first-order rate constants (k obs ) for the reactions of 2-aminopyrimidine with dichloro-{1-alkyl-2-(α-naphthylazo)imidazole}palladium(II) (1) and dichloro-{1-alkyl-2-(β-naphthylazo)imidazole}palladium(II) (2)complexes where the alkyl R = Me(a), Et(b), or Bz(c) in MeCN : [Pd(NN/)Cl2]0 = 1.0 × 10-4 mol dm-3, Temperature = 298 K.