Related Experiment Video
Updated: Jan 11, 2026

Synthesis 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
Coordination Engineering of Iron-Polyphthalocyanines with H-Substituted Graphdiyne for the Tandem Catalysis of
Kexin Liu1, Jiahao Ma1, Zengnian Ma2
1School of Chemistry and Chemical Engineering, Xi'an Key Laboratory of Functional Organic Porous Materials, Northwestern Polytechnical University, Xi'an, 710072, China.
Abstract:
Hydroxylamine (NH2OH) can be generated by controlling the nitrate electroreduction process, the key of which lies in the hydrogenation of *NO. In this study, hydrogen-substituted graphdiyne (HsGDY) is developed to engineer the growth of iron-polyphthalocyanine (FePPc) with four Fe-N4 centers around the diacetylene linkages via d-π interactions, where numerous isolated electrochemical interfaces with high degrees of site exposure are achieved. Density functional theory results indicate electron transfer from Fe-N4 sites to diacetylene linkages, which prevents the hydrogenation of *NH2OH. In such a hybrid, a relay process occurs between HsGDY and FePPc, where the diacetylene linkages work as the transfer stations of NO3 - to NO2 -, whereas the isolated Fe-N4 sites further help manage NO2 - to NH2OH. In addition, the well-aligned nanoarrays along with the extended conjugated structure of HsGDY make it effective in directing both electron and mass transfer around FePPc. Thus, HsGDY@FePPc achieves a NH2OH yield rate of 52.3 µmol h-1 cm-2 with a Faradic efficiency (FE) of 34.0% at - 0.7 V vs RHE. When further applied in the electrosynthesis of cyclohexanone oxime, a FE of 51.0% is achieved. This work reports a coordination method for engineering both the structure and performance of a molecular catalyst via the diacetylene linkages of HsGDY.
Related Concept Videos
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Coordination Compounds and Nomenclature
Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Diazonium Group Substitution: –OH and –H
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...
ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH3

![[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)