Related Experiment Video
Updated: Feb 4, 2026

Quantifying Mixing using Magnetic Resonance Imaging
Published on: January 25, 2012
Synthesis, structure and magnetic properties of two mixed-valence icosanuclear nanocages
Hui Wang1, Xiaoling Xu, Yimin Jiang
1State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China. ymjiang@mailbox.gxnu.edu.cn zlchen@mailbox.gxnu.edu.cn.
Abstract:
The reactions of 3,3'-bis(5-mercapto-1,2,4-triazole) with Co(ii) and Ni(ii) ions, respectively, gave two nanospheric mixed-valence icosanuclear cage-like complexes [M20L12](SO4)2·6DMF·CH3OH·3H2O (M = Co, 1; Ni, 2) with the in situ generated oxalyldithiosemicarbazide (H4L) as ligand. The eight octahedral M(ii) ions and twelve square-planar M(iii) ions in the two complexes are linked by twelve three-connecting linkers of L4- to build an icosanuclear [MII8MIII12L12]4+ nanocage with an inner cubic MII8 cage core. Their cage skeletons are stable in water. The sulphate anions reside over the cage portals. The magnetic measurements of the two complexes revealed the presence of dominant antiferromagnetic interactions between the metal ions in both complexes.
More Related Videos
Related Concept Videos
Valence Bond Theory
Valence Bond Theory
Properties of Transition Metals
Structural Properties and Dimensions of Lumber
The strength characteristics of...
Structure and Physical Properties of Alkynes
In nature, compounds containing both carbon and hydrogen are known as "hydrocarbons". Aliphatic hydrocarbons are compounds whose molecules contain saturated single bonds (i.e., alkanes) or unsaturated double or triple bonds. Alkenes contain carbon–carbon double bonds and have a structural formula CnH2n. Unsaturated hydrocarbons containing carbon–carbon triple bonds are called "alkynes" and are structurally represented by the formula CnH2n-2.
The...
Valence Bond Theory and Hybridized Orbitals
A σ bond (single bond in a Lewis structure) is a covalent bond in which the electron density is...

