期刊
DALTON TRANSACTIONS
卷 50, 期 36, 页码 12692-12707出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1dt02140k
关键词
-
资金
- National Natural Science Foundation of China [21871203, 21671143]
Secondary building units in metal-organic frameworks, such as the linear trinuclear SBUs denoted as M-3, are essential both structurally and in terms of performance. While M-3 clusters are common, they are rarely discussed as a class and exhibit unprecedented metal diversity and ligand tolerance. Some M-3-based MOFs are stable under demanding conditions and can be used in applications like flue gas separation.
Secondary building units (SBUs) in metal-organic frameworks (MOFs) are essential from both a structural and performance perspective. While a variety of SBUs, such as paddlewheel Cu-2(II), triangular Cr-3(III), tetrahedral Zn-4(II), and octahedral Zr-6(IV) have been extensively studied, the linear trinuclear SBUs (herein denoted as M-3), though frequently encountered, are rarely discussed as a class. A literature survey reveals that M-3 clusters are ubiquitous in discrete molecular entities as well as in MOFs. Unlike most other cluster types, however, they have an unprecedented metal diversity and ligand tolerance. The single-crystals of some M-3-based MOFs are also sufficiently robust upon guest removal and exchange or multi-step post-modifications to enable catalytic mechanism elucidation. Some of these M-3-based SBUs endow MOFs with stability under demanding conditions necessary, for example, in flue gas separation. Herein we review MOFs sustained by this common but under-appreciated class of SBUs and discuss applications of the resulting MOF motifs.
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