Related Experiment Video
Updated: Jan 15, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
A one-dimensional selenotungstate based on neodymium and {SeO3} groups for catalytic synthesis of imidazoles
Hao-Zhe Wang1, Yu-Feng Liu1, Zhou-Fu Lin1
1Jiangxi Province Key Laboratory of Functional Organic Polymers, Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China. erick@ecut.edu.cn.
Abstract:
A novel neodymium-{SeO3}-bridged selenotungstate, [Na16Nd2.5(SeO3)(SeO3)(mal)(W4O9)(SeW8O32)(SeW9O33)2(H2O)4]·ca.26H2O (NdSeW, mal = malic acid), has been successfully synthesized and structurally characterized. This compound is constructed from both {SeW9} and {SeW8} building units, which are linked through an organometallic {Nd2Se2(mal)W4} cluster, forming a distinctive triangular arrangement. Two triangular trimers are connected via Nd-O-W to form a hexameric unit, which is subsequently extended into a one-dimensional chain structure through bridging by two {SeO3} groups. This type of one-dimensional chain architecture, constructed through alternating connections involving neodymium and {SeO3} groups, is extremely rare in polyoxometalate chemistry. In addition, NdSeW exhibits excellent catalytic activity for the synthesis of 2,4,5-trisubstituted imidazoles through the three-component condensation of aldehydes, benzils, and ammonium acetate under environmentally benign conditions.
More Related Videos
Related Concept Videos
Preparation and Reactions of Sulfides
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
Chirality at Nitrogen, Phosphorus, and Sulfur
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...

