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Citation: Zhang Qiyan, Li Yuejin, Chen Jinchang, Chen Rongti, Zhang Zhengzhi, Wang Xukun. STUDIES ON TRANSITION-METAL PERHALOPHENYL COMPOUNDS
Ⅸ. KINETICS AND MECHANISM OF SUBSTITUTION REACTIONS OF CHLORO-BIS (DIPHENYLMETHYLPHOSPHINE) (PENTACHLOROPHENYL)-NICKEL(Ⅱ) WITH PYRIDINE AND SUBSTITUTED PYRIDINE[J]. Acta Physico-Chimica Sinica, ;1985, 1(05): 460-463. doi: 10.3866/PKU.WHXB19850510 shu

STUDIES ON TRANSITION-METAL PERHALOPHENYL COMPOUNDS
Ⅸ. KINETICS AND MECHANISM OF SUBSTITUTION REACTIONS OF CHLORO-BIS (DIPHENYLMETHYLPHOSPHINE) (PENTACHLOROPHENYL)-NICKEL(Ⅱ) WITH PYRIDINE AND SUBSTITUTED PYRIDINE

1.
Department of Chemistry, Nankai University; Institute of Elemento-organic Chemistry, Nankai University

Received Date: 17 December 1984
Available Online: 15 October 1985

The kinetics of nucleophilic substitution reactions between trans-(Ph_2PMe)_2 Ni(C_6Cl_5)Cl and pyridine and various substituted pyridines in ethanol has been studied. In the presence of NH_4Cl (0.004M), the pseudo-first-order rate cons tant can be expressed by
k_(obs)=(k_1′[am]/(k_2/k_3)[Cl~-]+([am])+k_(am)′[am])
The rate constants and their corresponding activation parameters have been measu red and a reaction mechanism is proposed. The results show that the rate of sub stitution reactions is primarily verned by steric effect rather rather than the basicity of the entering group.
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STUDIES ON TRANSITION-METAL PERHALOPHENYL COMPOUNDS Ⅸ. KINETICS AND MECHANISM OF SUBSTITUTION REACTIONS OF CHLORO-BIS (DIPHENYLMETHYLPHOSPHINE) (PENTACHLOROPHENYL)-NICKEL(Ⅱ) WITH PYRIDINE AND SUBSTITUTED PYRIDINE

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通讯作者: 陈斌, bchen63@163.com

STUDIES ON TRANSITION-METAL PERHALOPHENYL COMPOUNDS
Ⅸ. KINETICS AND MECHANISM OF SUBSTITUTION REACTIONS OF CHLORO-BIS (DIPHENYLMETHYLPHOSPHINE) (PENTACHLOROPHENYL)-NICKEL(Ⅱ) WITH PYRIDINE AND SUBSTITUTED PYRIDINE