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

Table 1

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

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.

ISSN: 2661-801X