Redox-active metal−organic frameworks (MOFs) have great potential for use as cathode materials in lithium-ion batteries (LIBs) with large capacities because the organic ligands can undergo multiple-electron redox processes. However, most MOFs are electrical insulators, limiting their application as electrode materials. Here, we report an electron-conductive MOF with a 2,5-dihydroxy-1,4-benzoquinone (dhbq) ligand, Fe(dhbq). This compound had an electrical conductivity of 5 × 10 −6 S cm −1 at room temperature due to d−π interactions between the Fe ion and the ligand and the permanent microporosity. Fe(dhbq) had an initial discharge capacity of 264 mA h g −1 , corresponding to the two-electron redox process of dhbq.

Postsynthetic chemical reduction enhanced the electrical conductivity of a new flexible 1D coordination network with a naphthalenediimide (NDI)-based ligand.

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Lanthanide (Ln) compounds are common research targets in the field of magnetism and optics. Their properties arise from the electrons localized in the f-orbital. Moreover, the effect of the covalency between lanthanide and ligands on magnetism has attracted significant attention. We have provided insight into the Gd–Pt bond (of the heterometallic Ln-Pt complexes: {[Pt(PhSAc)4]Ln[(PhSAc)4Pt]} NEt4·2DMF (Ln = Y(0), La(1), Gd(2); PhSAc = thiobenzoate, NEt4 = tetraethylammonium)); single-crystal polarized X-ray absorption near edge structure (XANES) reveal the electronic states around metal ion, where spectra of Gd-LIII edges show the Gd–Pt direction has the highest covalency (less ionic) around Gd ion in 2. In addition, calculating natural bonding (NBO) analysis, natural population analysis (NPA), LOL, and atoms in molecules (AIM), ab initio calculations reveal the role of metallic and organic ligands in the electronic and magnetic properties of Ln complexes. The slow magnetization relaxation of the Gd complex, which has not been reported previously in the Pt–Gd–Pt system, was observed up to 45 K, the highest temperature reported to date among isolated Gd-complexes (frequency range: 0.1–10000 Hz).

The first interdigitated MX-type chain complex with infinite π-stacked arrays was synthesized. The synchronization between Pt–Br··· chain and π-stacking periodicities led the longest M–X–M distance (6.6978(15) Å) and nil or...