一价金的氮氧自由基配合物的合成、结构及其磁性(英文) |
Synthesis, Structure and Magnetic Property of a Gold(I) Complex with Nitronyl-nitroxide Radical |
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摘要: 本文合成了一个含一价金的氮氧自由基配合物(PPh3)Au(p-NN) (1)[p-NN=2-(对-乙炔基苯基)-4,4,5,5-四甲基-2-咪唑啉基氧自由基],并用X射线衍射单晶结构分析测定了它的结构。由于三苯基膦具有较大的位阻效应,因此配合物中不存在明显的分子内或分子间Au…Au相互作用。磁化率研究表明,相邻分子间的O…O相互作用使之形成二聚体,因而导致了分子之间的反铁磁相互作用。 |
关键词: 一价金配合物 氮氧自由基 磁性 |
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Abstract: The complex (PPh3)Au(p-NN) (1), where p-NN=2-(p-Ethynylphenyl)-4,4,5,5-tetramethyl-2-imidazoline-1-oxide-3-oxyl has been prepared and structurally characterized. No close intra- or inter-molecular Au…Au contact was found in the structure of complex 1 due to the steric hindrance of the bulky triphenylphosphine ligand. Magnetic studies show inter-molecular anti-ferromagnetic interactions which result from the dimerized structure formed by short O…O contact between neighboring molecules. CCDC: 646346. |
Keywords: gold(Ⅰ) complex nitronyl-nitroxide radical magnetic property |
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李承辉,顾志国,左景林,游效曾.一价金的氮氧自由基配合物的合成、结构及其磁性(英文)[J].无机化学学报,2007,23(9):1582-1586. |
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