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Bis[(dialkylamino)cyclopropenimine]-Stabilized P-III- and P-V-Centered Dications

机译:双[(二烷基氨基)环丙亚胺]-稳定的P-III-和P-V-中心阳离子

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摘要

The treatment of bis[(dialkylamino)cyclopropenimines] with dihalophosphines in the presence of trimethylsilyl trifluoromethanesulfonate (TMSOTf) to form diimine-stabilized P-III-centered dications is reported. The structures of the new compounds were determined by using X-ray diffraction analysis and their donor abilities as ligands evaluated through electrochemical methods. Despite the two positive charges that they bear, these compounds depict intermediate behavior between that of phosphines and phosphites. The coordination of the [L2PR](2+) moiety to Au-I and Ag-I is also reported. Even more surprisingly, these phosphorus centers can be oxidized to the corresponding P-V dications in the presence of strong oxidants such as peroxides or XeF2.
机译:据报道,在三甲基甲硅烷基三氟甲磺酸盐(TMSOTf)存在下,用二卤代膦处理双[((二烷基氨基)环丙啶胺]形成二亚胺稳定的以P-III为中心的药物。通过使用X射线衍射分析来确定新化合物的结构,并通过电化学方法评估它们作为配体的供体能力。尽管它们带有两个正电荷,这些化合物仍显示出膦和亚磷酸酯之间的中间行为。还报道了[L2PR](2+)部分与Au-1和Ag-1的配位。甚至更令人惊讶的是,在强氧化剂如过氧化物或XeF2的存在下,这些磷中心可被氧化成相应的P-V指示。

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