In:
Angewandte Chemie, Wiley, Vol. 134, No. 44 ( 2022-11-02)
Abstract:
Under cold pressure sp 1 /sp 2 ‐to‐sp 3 hybridization transformation has been exclusively observed in covalent or molecular crystals overwhelmingly above ≈10 GPa, and the approaches to lower the transition pressure are limited on external heat‐treatment and/or catalyzers. Herein we demonstrate that, by internal‐lattice stress‐transfer from ionic to covalent groups, the transformation can be significantly prompted, as shown in a crystal of LiBO 2 under 2.85 GPa for the first case in ionic crystals. This unprecedentedly low transformation pressure is ascribed to the enhanced localized stress on covalent B−O frames transferred from ionic Li−O bonds in LiBO 2 , and accordingly the corresponding structural feature is summarized. This work provides an internal structural regulation strategy for pressure‐reduction of the s‐p orbital hybridization transformation and extends the sp 1 /sp 2 ‐to‐sp 3 transformation landscape from molecular and covalent compounds to ionic systems.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v134.44
DOI:
10.1002/ange.202208247
Language:
English
Publisher:
Wiley
Publication Date:
2022
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