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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Pyrazole Based Mono- and Di-Substituted Half Sandwich d(6) Platinum Group Metal Complexes: Synthesis and Spectral Characterization
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Pyrazole Based Mono- and Di-Substituted Half Sandwich d(6) Platinum Group Metal Complexes: Synthesis and Spectral Characterization

机译:吡唑基的单醇和二取代的半夹层D(6)铂族金属配合物:合成和光谱表征

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摘要

Reactions of pyrazole based ligand and halide bridged arene d(6) metal precursors resulted a series of mono and di-substituted pyrazole based half sandwich d(6) metal complexes. In general, they are formulated as [(arene)MLCl2] [M = Ru, arene = benzene (1), p-cymene (2), arene = Cp*, M = Rh (3) and Ir (4)] and [(arene)ML2Cl] [M = Ru, arene = benzene (5), p-cymene (6), arene = Cp*, M = Rh (7) and Ir (8)]. All these complexes were characterized by various spectroscopic techniques (IR, H-1 NMR, ESI-MS, and UV/Vis). The molecular structures were confirmed by single-crystal X-ray diffraction technique. Spectroscopic studies revealed that complexation i.e., mono- and di-substitution occurred by the ratio-based reaction between pyrazole ligand and metal precursor through the neutral nitrogen rather than protic nitrogen. In these complexes deprotonation of the protic nitrogen does not occur unlike the other complexes containing pyrazole derivatives, in which the pyrazole ligand is anionic.
机译:吡唑基配体和卤化物桥接的芳烯D(6)金属前体的反应产生了一系列的一系列单一和二取代的吡唑的半夹层D(6)金属配合物。 通常,它们被配制为[(芳烃)MLCl 2] [M = Ru,Arene =苯(1),p-cyheNe(2),arene = Cp *,m = Rh(3)和Ir(4)]和 [(芳烃)ML 2 Cl] [M = Ru,芳烃=苯(5),P-Cymene(6),arene = Cp *,m = Rh(7)和Ir(8)]。 所有这些配合物的特征在于各种光谱技术(IR,H-1 NMR,ESI-MS和UV / VI)。 通过单晶X射线衍射技术确认分子结构。 光谱研究表明,通过中性氮而不是质子氮的吡唑配体和金属前体之间的基于比率的基于比例而发生的络合。,单 - 和二取代。 在这些复合物中,与含有吡唑衍生物的其他配合物不同,不发生质子氮的去质子化,其中吡唑配体是阴离子。

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