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

本文合成了一个含一价金的氮氧自由基配合物(PPh_3)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。

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 0-0 contact between neighboring molecules. CCDC： 646346.