首页> 外文期刊>Chemistry: A European journal >Alternating Ritht-and Left-Handed Helical Loops in a Self-Assembled Polymer: Direct Observation of Ring-Opening Polymerization of a Macrocyclic Gold Complex
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Alternating Ritht-and Left-Handed Helical Loops in a Self-Assembled Polymer: Direct Observation of Ring-Opening Polymerization of a Macrocyclic Gold Complex

机译:自组装聚合物中交替的左旋和左旋螺旋环:大环金络合物的开环聚合反应的直接观察

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Reactionof the ligand N,N'-bis(pyridin3-yl-1,3-benzenedicaroxamide(1) with the diphosphanedigold(I) complex[(#mu#-PP)(AuO_2CCF_3)_2]occurred by displacement of the trifluoroacetate ligands by the pyridyl groups of 1, and crystallication gave the macrocyclic complex [Au_2(#mu##-PP)(#mu#-1)(CF-3CO_2)_2](2b), when PP-trans-[Ph_2PCH=CHPPh_2] but the polymer [{Au_2(#mu#-PP)(#mu#-1)}_x](CF_3CO_2)_(2x)(3), when PP=Ph_2PCH_2CH_2PPh_2 . The polymer 3 contains a seriesof helical turns connected by linear chain sections. and the helices have alternating right-and left-handed conformations. The polymer 3 dissolves to give an equilibrium mixture of the macrocyclic ring complex of the macrocyclic ring complex[Au_2(#mu#-PP)(#mu#-1)](CF_3CO)_2_2(2a), and ring opened oligomers, thus giving insight into the mechanism of th ring-opening polymerication reaction
机译:配位体N,N'-双(吡啶基3-yl-1,3-苯二酰胺)(1)与二膦二恶英(I)配合物[(#mu#-PP)(AuO_2CCF_3)_2]的反应是通过取代三氟乙酸盐配体当PP-trans- [Ph_2PCH = CHPPh_2]时,吡啶基1的结晶并结晶得到大环配合物[Au_2(#mu ##-PP)(#mu#-1)(CF-3CO_2)_2] [2b)但是当PP = Ph_2PCH_2CH_2PPh_2时,聚合物[{Au_2(#mu#-PP)(#mu#-1)} _ x](CF_3CO_2)_(2x)(3)。聚合物3包含一系列由线性连接的螺旋线匝链节和螺旋结构具有交替的右手和左手构象,聚合物3溶解后得到大环配合物[Au_2(#mu#-PP)(#mu#-1) )](CF_3CO)_2_2(2a)和开环低聚物,从而深入了解开环聚合反应的机理

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