The First Crystal and Molecular Structure of asyn-Acetato-Bridged Dinuclear Cyclometallated Complex [Pd{2,3,4-(MeO)3C6HC(H)=NCH2CH2OH}(μ-OAc)]2
作者:Alberto Fernández、Digna Vázquez-García、Jesús J. Fernández、Margarita López-Torres、Antonio Suárez、Samuel Castro-Juiz、José M. Vila
DOI:10.1002/1099-0682(200209)2002:9<2389::aid-ejic2389>3.0.co;2-m
日期:2002.9
4-(MeO)3C6H2C(H)=NR (R = CH2CH2OH, 1; R = Me, 17; R = Et, 18; R = Pr, 19; R = tBu, 20) with palladium(II) acetate in toluene gave the dinuclear cyclometallated complexes [Pd2,3,4-(MeO)3C6HC(H)=NR}(μ-O2CMe)]2 (R = CH2CH2OH, 2; R = Me, 21; R = Et, 22; R = Pr, 23; R = tBu, 24), with the ligand bonded to the palladium atom through the imine nitrogen and the C6 carbon atoms. The 1H and 13C1H} NMR spectra of the
席夫碱配体的处理 2,3,4-(MeO)3C6H2C(H)=NR (R = CH2CH2OH, 1; R = Me, 17; R = Et, 18; R = Pr, 19; R = tBu, 20) 在甲苯中用乙酸钯 (II) 得到双核环金属化配合物 [Pd2,3,4-(MeO)3C6HC(H)=NR}(μ-O2CMe)]2 (R = CH2CH2OH, 2; R = Me, 21; R = Et, 22; R = Pr, 23; R = tBu, 24),配体通过亚胺氮和 C6 碳原子与钯原子键合。配合物的 1H 和 13C1H} NMR 谱表明溶液中存在反异构体和顺异构体。anti/syn 比率随溶剂和亚胺氮取代基 R 的性质而变化。具有大体积 tBu 基团的配合物 24 在氯仿中显示出 28:1 的比率,而体积较小的取代配合物显示出较低的比率。描述了配合物 2 顺式异构体的 X 射线晶体结构。乙酰基桥连络合物