A nickel‒vanadium metal–organic hybrid compound [Ni(phen)3]2[(V2O2(O2)2((S)-mand)2)][(V2O2(O2)2((R)-mand)2)]·18H2O (phen = 1,10-phenanthroline, mand2− = mandelato(2−) ligand, C6H5–CO–COO2−) (1) was prepared and characterized by spectral methods, X-ray structure analysis and simultaneous DTA and TG measurements. The crystal structure of 1 contains both Δ and Λ enantiomers of the [Ni(phen)3]2+ cations that construct sandwich layers along the crystallographic axis c, in between which sit the vanadium(V) complex anions. These are present as ionic dimers in the form of a robust {[(V2O2(O2)2((S)-mand)2)][(V2O2(O2)2((R)-mand)2)]}4− species. The two individual anions are coupled by a pair of weak, yet significant attractions between two vanadium atoms and two peroxido ligands of the adjacent anion at V‒O distances 2.660 Å. The 51V NMR spectrum of the compound in DMSO solution revealed a complicated course of decomposition reactions of the anion, which led to formation of the [(V2O4(S,R-mand)2]2− anion as a single product. The metal–organic hybrid compound 1 is converted by thermal decomposition into a potential anode material for lithium-ion batteries Ni(VO3)2.

中文翻译：

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将钒 (V) 的双核过氧化物曼德拉托络合物的离子二聚体捕获到由 Δ- 和 Λ-[Ni(菲咯啉)3]2+ 阳离子构成的空腔中：Ni(VO3)2 的前体

镍钒金属有机杂化化合物[Ni(phen)3]2[(V2O2(O2)2((S)-mand)2)][(V2O2(O2)2((R)-mand)2) ]·18H2O（phen = 1,10-菲咯啉，mand2− = mandelato(2−) 配体，C6H5–CO–COO2−) (1) 是通过光谱方法、X 射线结构分析和同步 DTA 和 TG 制备和表征的测量。1 的晶体结构包含 [Ni(phen)3]2+ 阳离子的 Δ 和 Λ 对映异构体，它们沿结晶轴 c 构建夹心层，钒(V) 复合阴离子位于夹心层之间。这些作为离子二聚体以强健的 {[(V2O2(O2)2((S)-mand)2)][(V2O2(O2)2((R)-mand)2)]}4-物种。两个单独的阴离子通过两个钒原子和相邻阴离子的两个过氧化物配体之间的一对微弱但显着的吸引力耦合，V-O 距离为 2.660 Å。