Related Experiment Video
Updated: Jun 5, 2025

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Construction and Magnetic Difference of {CoIIICoII12MII6} (M = CoII/CdII) Aggregates with Homo- and Heterometallic
Ye Tao1, Yun-Kai Chen1, Huang-Fei Qin1
1State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, PR China.
Abstract:
Controllable synthesis of sophisticated aggregations has attracted wide attention from scientists. In this work, homo- and heterometallic {CoIIICoII12MII6} (M = CoII/CdII) aggregates with similar skeletons, composed of two [Co3M3(dpbt)3] peripheries and a central [Co7(OH)8] vertex-fused double-cubane, were constructed from prefabricated {Co14} 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 CoII ions and/or diamagnetic CdII ions. Interestingly, the spin canting behavior in {CoCo} was suppressed in {CoCoCd}, upon the introducing of CdII ions.
More Related Videos
06:53Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
08:40Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Related Concept Videos
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
Valence Bond Theory
Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
Stereoisomerism
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...