Construction and Magnetic Difference of {CoCoM} (M = Co/Cd) Aggregates with Homo- and Heterometallic Centers Derived from {Co} Precursors.

Controllable synthesis of sophisticated aggregations has attracted wide attention from scientists. In this work, homo- and heterometallic {CoCoM} ( = Co/Cd) aggregates with similar skeletons, composed of two [CoM(dpbt)] peripheries and a central [Co(OH)] vertex-fused double-cubane, were constructed from prefabricated {Co} clusters and characterized by single-crystal X-ray diffraction and XPS, ICP-MS, SEM (EDX), and so on. And then, the structure and magnetic differences of them had been further analyzed under dotted with paramagnetic Co ions and/or diamagnetic Cd ions.

Hierarchical Construction and Magnetic Difference of {CoM} (M = Co/Cd) Aggregates from {Co} Cluster-Based Precursors in the Presence of Homo/Heterometal Salts.

The controllable construction and function expansion of some sophisticated aggregations represent a current hot topic in scientific research. In this paper, using a prefabricated {Co} cluster as a synthetic precursor, a homometallic {Co} and a heterometallic {CoCd} giant cluster possessing similar dual-[M] (M = Co/Cd) skeletons was prepared by reacting the precursor with excess CoCl and Cd(OAc) salts, respectively. The detailed structural information on {Co} and {CoCd} was characterized by single-crystal X-ray diffraction and further analyzed by X-ray photoelectron spectroscopy, inductively coupled plasma-mass spectroscopy, and scanning electron microscopy with energy dispersive X-ray (EDX) spectroscopy in the solid state.

Hierarchical Assembly of a {Co} Cluster from Two Vertex-Fused {Co} Clusters and Their Single-Molecule Magnetism.

We present the synthesis, structural characterization, and magnetic properties of two high-nuclearity cobalt clusters formulated as [Co(μ-OH)(μ-Cl)(dpbt)(ptd)Cl][Co(HO)Cl]·(CH)CHOH (1) and [Co(μ-OH)(μ-Cl)(dpbt)(ptd)Cl]·2CHCHOH (2), respectively (Hdpbt = 5,5'-bis(pyridin-2-yl)-3,3'-bis(1,2,4-triazole) and Hptd = 3-(pyridin-2-yl)-1,2,4-triazine-5,6-diol). Compound 1 is composed of an inner [Co(μ-OH)(μ-Cl)] cubane and an outer [Co(dpbt)(ptd)Cl] defective adamantane. Compound 2 reveals a giant {Co} cluster possessing a dual-[Co] skeleton from 1.