Three new Ru complexes with N-P(OH)-N donor ligands were synthesized and characterized. A ruthenium complex with a ligand with quinolinyl side arms exhibited monodentate coordination through the phosphorus atom with an intramolecular POH⋅⋅⋅N(quinolinyl) hydrogen bond but with no interaction between nitrogen donors and the ruthenium center. Two pentamethylcyclopentadienyl ruthenium complexes with a ligand with pyridyl side arms exhibited fac-κ³-NPN’ tridentate coordination to the metal center, one with an interionic POH⋅⋅⋅FPF₅ hydrogen bond in the crystal. A paramagnetic nickel [Ni₃(N-P(O)-N)₄] cluster was also characterized; the crystal structure shows three nickel centers in two different environments. The central nickel is coordinated to four deprotonated ligands, two are bidentate κ²-NO, two are monodentate κ-O and is connected to the other two nickel centers by two sets of bridging μ²-O,P moieties. Non-central nickel centers are each coordinated to one bidentate ligand κ²-PN and one monodentate ligand κ-P.

中文翻译：

---

具有中心二级氧化膦供体的三齿 NPN 配体及其相应的金属配合物

合成并表征了三种具有 NP(OH)-N 供体配体的新型 Ru 配合物。带有喹啉侧臂配体的钌配合物通过磷原子与分子内 POH⋅⋅⋅N(喹啉基) 氢键显示单齿配位，但氮供体和钌中心之间没有相互作用。两个五甲基环戊二烯钌络合物与吡啶基侧臂的配体展出面式κ ³ -NPN到金属中心，一个与离子间POH⋅⋅⋅FPF”三齿配位₅晶体中的氢键。A顺磁性镍[Ni ₃ (NP(O)-N) ₄] 集群也有特点；晶体结构显示了两种不同环境中的三个镍中心。中心镍与四个去质子化配体配位，两个是双齿 κ ² -NO，两个是单齿 κ-O，并通过两组桥接 μ ² -O,P 部分连接到另外两个镍中心。非中心镍中心分别与一个双齿配体 κ ² -PN 和一个单齿配体 κ-P 配位。