The reaction between [Ru(salen)(PPh3)Cl] and the 4-pyridyl-substituted nitronyl nitroxide radical (NITpPy) leads to the [Ru(salen)(PPh3)(NITpPy)](ClO4)(H2O)21 complex while the reaction with the azido anion (N3â) leads to the [Ru(salen)(PPh3)(N3)] 2 complex (where salen2â = N,Nâ²-ethan-1,2-diylbis(salicylidenamine) and PPh3 = triphenylphosphine). Both compounds have been characterized by single crystal X-ray diffraction. The two crystal structures are composed by a [Ru(III)(salen)(PPh3)]+ unit where the Ru(III) ion is coordinated to a salen2â ligand and one PPh3 ligand in axial position. In 1 the Ru(III) ion is coordinated to the 4-pyridyl-substituted nitronyl nitroxide radical whereas in 2 the second axial position is occupied by the azido ligand. In both complexes the Ru(III) ions are in the same environment RuO2N3P, in a tetragonally elongated octhaedral geometry. The crystal packing of 1 reveals Ï-stacking in pairs. While antiferromagnetic intermolecular interaction (J2 = 5.0 cmâ1) dominates at low temperatures, ferromagnetic intramolecular interaction (J1 = â9.0 cmâ1) have been found between the Ru(III) ion and the coordinated NITpPy.
Ru(salen)(PPh3)Cl]与 4-
吡啶基取代的硝基亚硝氧自由基(NITpPy)反应生成[Ru(salen)(PPh3)(NITpPy)](
ClO4)(
H2O)21 复合物,而与
叠氮阴离子(N3â)反应则生成[Ru(salen)(PPh3)(N3)] 2 复合物(其中 salen2â = N、Nâ²-ethan-1,2-diylbis(salicylidenamine) 和 PPh3 =
三苯基膦)。这两种化合物都已通过单晶 X 射线衍射法进行了表征。这两种晶体结构都由一个 [Ru(III)(salen)(PPh3)]+ 单元组成,其中 Ru(III) 离子与一个 salen2â
配体和一个 PPh3
配体配位在轴向位置。在 1 中,Ru(III) 离子与 4-
吡啶基取代的硝基硝氧自由基配位,而在 2 中,第二个轴向位置被
叠氮配体占据。在这两种配合物中,Ru(III)离子都处于相同的 RuO2N3P 环境中,呈四方拉长的八面体几何形状。1 的晶体堆积显示出成对的Ï-堆积。虽然分子间的反
铁磁作用(J2 = 5.0 cmâ1)在低温下占主导地位,但在 Ru(III)离子和配位的 NITpPy 之间发现了
铁磁分子内作用(J1 = 9.0 cmâ1)。