Reactions of nitrosoarenes containing electron-withdrawing substituents with coordinated CO. Synthesis and structure of complexes Pd<sub>2</sub>(OAc)<sub>2</sub>(p-ClC<sub>6</sub>H<sub>4</sub>N[p-ClC<sub>6</sub>H<sub>3</sub>NO])<sub>2</sub>and Pd<sub>2</sub>(OAc)<sub>2</sub>(o-ClC<sub>6</sub>H<sub>4</sub>N[o-ClC<sub>6</sub>H<sub>3</sub>NO])<sub>2</sub>
作者:S. T. Orlova、T. A. Stromnova、D. N. Kazyul"kin、L. I. Boganova、D. I. Kochubey、B. N. Novgorodov
DOI:10.1023/b:rucb.0000037849.06365.7f
日期:2004.4
reaction of tetranuclear Pd4(μ-COOCH3)4(μ-CO)4 cluster (1a) with p- and o-chloronitrosobenzenes was found to give dinuclear nitrosoamide complexes, Pd2(OAc)2(p-ClC6H4N[p-ClC6H3NO])2 (4) and Pd2(OAc)2(o-ClC6H4N[o-ClC6H3NO])2 (5), respectively. The formation of complexes 4 and 5 is accompanied by evolution of CO2, resulting from oxidation of CO coordinated in cluster 1. Complexes 4 and 5 were characterized
发现四核 Pd4(μ-COOCH3)4(μ-CO)4 簇 (1a) 与对和邻氯亚硝基苯反应生成双核亚硝基酰胺配合物 Pd2(OAc)2(p-ClC6H4N[p-ClC6H3NO] )2 (4) 和 Pd2(OAc)2(o-ClC6H4N[o-ClC6H3NO])2(5) 分别。配合物 4 和 5 的形成伴随着 CO2 的演化,这是由簇 1 中配位的 CO 氧化引起的。配合物 4 和 5 通过元素分析和 IR 和 1H NMR 光谱表征;EXAFS 研究了它们的结构。研究了双核配合物4与分子氢和CO的反应。4 用氢还原的主要产物包括金属钯、乙酸、环己酮和分子氮。在温和条件 (1 atm, 20 °C) 下用 CO 处理配合物 4 得到对氯苯基异氰酸酯。