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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Directed regioselectivity in cyclometallated palladium(II) compounds of N-benzylidenebenzylamines. Crystal and molecular structure of [Pd{3,4-(OCH_2O)C_6H_2C(H)=NCH_2-[3,4-(OCH_2O)C_6H_3]-C_2,N}(#mu#-O_2CMe)]_2
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Directed regioselectivity in cyclometallated palladium(II) compounds of N-benzylidenebenzylamines. Crystal and molecular structure of [Pd{3,4-(OCH_2O)C_6H_2C(H)=NCH_2-[3,4-(OCH_2O)C_6H_3]-C_2,N}(#mu#-O_2CMe)]_2

机译:N-亚苄基苄胺在环金属化钯(II)化合物中的定向区域选择性。 [Pd {3,4-(OCH_2O)C_6H_2C(H)= NCH_2- [3,4-(OCH_2O)C_6H_3] -C_2,N}(#mu#-O_2CMe)] _ 2的晶体和分子结构

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摘要

The reaction of the Schiff base ligand 3,4-(OCH_2O)C_6H_3C(H)=NCH_3[3,4-(OCH_2O)C_6H_3] (a) with Pd(OAc)_2 yields two endocyclic cyclometallated compounds: [Pd{3,4-(OCH_2O)C_6H_2C(H)=NCH_2[3,4-(OCH_2O)C_6H_3]-C_2,N}(#mu#-O_2CMe)]_2 (C2,N-bonded) (1a), and [Pd{3,4-(OCH_2O)C_6H_2C(H)=NCH_2-[3,4-(OCH_2O)C_6H_3]-C6,N}(#mu#-O_2CMe)]_2 (C6,N-bonded) (16), which may be separated by fractional crystallization. The corresponding cyclopalladated dimers with bridging chloride ligands, 2a, 2b, hae been prepared bvy a metathesis reaction with aqueous sodium chloride. Treatment of the latter compounds with tertiary phosphines in the appropriate molar ratio gave the mono and dinuclear compounds, 3a-8a and 3b-5b, respectively. The structure of compound 1a has been determined by X-ray diffraction analysis. The molecular configuration is a dimeric form of the anti isomer with the cyclopalladated moieties in an 'open-book' arrangement linked by two acetate bridging ligands.
机译:Schiff碱配体3,4-(OCH_2O)C_6H_3C(H)= NCH_3 [3,4-(OCH_2O)C_6H_3](a)与Pd(OAc)_2的反应产生两种环内环化金属化合物:[Pd {3, 4-(OCH_2O)C_6H_2C(H)= NCH_2 [3,4-(OCH_2O)C_6H_3] -C_2,N}(#mu#-O_2CMe)] _ 2(C2,N键)(1a)和[Pd { 3,4-(OCH_2O)C_6H_2C(H)= NCH_2- [3,4-(OCH_2O)C_6H_3] -C6,N}(#mu#-O_2CMe)] _ 2(C6,N键合)(16),可以通过分步结晶分离。通过与氯化钠水溶液进行复分解反应,制备了具有桥联的氯化物配体2a,2b的相应的环钯二聚体。用叔膦以适当的摩尔比处理后一种化合物,分别得到单核和双核化合物3a-8a和3b-5b。化合物1a的结构已经通过X射线衍射分析确定。分子构型是反异构体的二聚体形式,其具有以“开放书”形式被两个乙酸桥联配体连接的环palpalated部分。

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