Influence of phenyl ring substituents in the cyclometallation of Schiff base ligands: crystal and molecular structures of [Pd-{3,4-(OCH2O)C6H2C(H)N(Cy)-C2,N}(μ-O2CMe)]2 and [Pd-{3,4-(OCH2CH2O)C6H2C(H)N(Cy)-C6,N}(μ-O2CMe)]2
作者:Berta Teijido、Alberto Fernández、Margarita López-Torres、Samuel Castro-Juiz、Antonio Suárez、Juan M. Ortigueira、José M. Vila、Jesús J. Fernández
DOI:10.1016/s0022-328x(99)00680-4
日期:2000.3
Reaction of Pd(OAc)2 with the Schiff base ligands 3,4-O(CH2)nO}C6H3C(H)NR (n=1, 2; R=Cy, 3,4-(OCH2O)C6H3CH2-) leads to dinuclear cyclometallated products in which each palladium atom is C,N bonded to a deprotonated organic ligand, and to two acetate groups which bridge both metal centers. Treatment of 3,4-O(CH2)2O}C6H3C(H)NCH2CH2NMe2 with [PtMe2(COD)] gives mononuclear compounds with the ligand
Pd(OAc)2与席夫碱配体3,4- O(CH 2)n O} C 6 H 3 C(H)NR(n = 1,2; R = Cy,3,4- (OCH 2 O)C 6 H 3 CH 2-)生成双核环金属化产物,其中每个钯原子是C,N键合到去质子化的有机配体上,并键接到桥接两个金属中心的两个乙酸酯基团上。的治疗3,4- O(CH 2)2 ö}℃ 6 ħ 3 C(H)NCH 2 CH 2 NME 2与[PTME2(COD)]通过[C,N,N]原子给出了配体为三齿的单核化合物。通过1 H-NMR光谱和X射线衍射研究讨论了环金属化过程的区域选择性。