Issue 27, 2024

From cubane-assembled Mn-oxo clusters to monodispersed manganese oxide colloidal nanocrystals

Abstract

The assemblies of [M4O4] (M = metal) cubanes represent a fascinating class of materials for a variety of application fields. Although such a structural characteristic is relatively common in small molecules and in extended bulk solids, high nuclearity clusters composed of multiple [M4O4] units as their backbones are rare. In this work, we report two new Mn-oxo clusters, MnII8MnIII10O10(OOCMe)12(OMe)14(py)2 ([Mn18-Ac]) and MnII4MnIII14O14(OOCCMe3)8(OMe)14(MeOH)5(py) ([Mn18-Piv]), whose core structures are assemblies of either 6- or 7-cubanes in different packing patterns, which have been unambiguously revealed by single crystal X-ray diffraction technique. The cubane-assembled structural features can be deemed as the embryonic structures of the bulk manganese oxide. Herein, this report demonstrates the first case study of utilizing Mn-oxo clusters as precursors for the preparation of manganese oxide nanocrystals, which has never been explored before. Through a simple colloidal synthetic approach, high-quality, monodisperse Mn3O4 nanocrystals can be readily prepared by employing both precursors, while their morphologies were found to be quite different. This work confirms that the structural similarity between precursors and nanomaterials is instrumental in affording more kinetically efficient pathways for materials formation, and the structure of the precursor has a significant impact on the morphology of final nanocrystal products.

Graphical abstract: From cubane-assembled Mn-oxo clusters to monodispersed manganese oxide colloidal nanocrystals

Supplementary files

Article information

Article type
Edge Article
Submitted
01 3 2024
Accepted
10 6 2024
First published
11 6 2024
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2024,15, 10381-10391

From cubane-assembled Mn-oxo clusters to monodispersed manganese oxide colloidal nanocrystals

Y. He, Y. Liu, H. Zheng, Z. Xiang, Z. Zhou, F. Geng, L. Geng, E. V. Dikarev and H. Han, Chem. Sci., 2024, 15, 10381 DOI: 10.1039/D4SC01451K

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