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首页> 外文期刊>Crystal growth & design >Exploring the versatility of N-pyrazole, P-phosphinite hybrid ligands against Pd(II). from monomers and dimers to one-dimensional chain, two-dimensional layer polymers and three-dimensional networks
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Exploring the versatility of N-pyrazole, P-phosphinite hybrid ligands against Pd(II). from monomers and dimers to one-dimensional chain, two-dimensional layer polymers and three-dimensional networks

机译：探索N-吡唑，P-次膦酸酯杂配体对Pd（II）的多功能性。从单体和二聚体到一维链，二维层状聚合物和三维网络

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摘要

The versatility of N-pyrazole, P-phosphinite hybrid ligands [2-(3,5-dimethyl-1H-pyrazol-1-yl)ethyldiphenylphosphinite (L~1), 3-(3,5-dimethyl-1H-pyrazol-1-yl)propyldiphenylphosphinite (L~2), and 2-(3,5-diphenyl-1H-pyrazol-1-yl)ethyldiphenylphosphinite (L~3)] has been studied toward Pd(II). The reactions lead to a mixture of three complexes in solution for each ligand ([PdCl_2(L~x)], [PdCl _2(L~x)_2] and [PdCl_2(L ~x)]_2) obtaining monomers (where L acts as mono-/bidentated agents) and dimers where the two L bridge the two metallic atoms in a head-to-tail arrangement. Complexes have been isolated and fully characterized by analytical and spectroscopic methods. X-ray crystal structures of some of the complexes as well as of other species [PdCl_2L~3] _2 (only detected in the solid state) are presented. Furthermore, these complexes were prepared to examine the effects of the L structure on the topology and interpenetration form (one-dimensional chain, two-dimensional layer polymers and three-dimensional networks). Additionally, experimental and simulated NMR studies and a battery of modifications in the synthesis of the complexes (relation ratio of the starting products, order of addition, solvents and temperature) permit a better understanding of the role of ligands in the self-assembly process.
机译：N-吡唑，P-次膦酸酯杂配体[2-（3,5-二甲基-1H-吡唑-1-基）乙基二苯基次膦酸酯（L〜1），3-（3,5-二甲基-1H-吡唑-已经研究了对Pd（II）的1-基）丙基二苯基次膦酸酯（L〜2）和2-（3,5-二苯基-1H-吡唑-1-基）乙基二苯基次膦酸酯（L〜3）。反应导致每种配体在溶液中形成三种复合物的混合物（[PdCl_2（L〜x）]，[PdCl _2（L〜x）_2]和[PdCl_2（L〜x）] _ 2），从而获得单体（其中L用作单/双价剂）和二聚体，其中两个L以头尾相接的方式桥接两个金属原子。配合物已被分离，并已通过分析和光谱方法进行了全面表征。给出了一些配合物以及其他物种[PdCl_2L〜3] _2（仅以固态形式检测）的X射线晶体结构。此外，准备了这些配合物以检查L结构对拓扑和互穿形式（一维链，二维层聚合物和三维网络）的影响。此外，实验和模拟NMR研究以及配合物合成中的一系列修饰（起始产物的比例，添加顺序，溶剂和温度）使人们可以更好地理解配体在自组装过程中的作用。

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