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Cs 4 B 4 O 3 F 10 : First Fluorooxoborate with [BF 4 ] Involving Heteroanionic Units and Extremely Low Melting Point
Author(s) -
Xia Ming,
Mutailipu Miriding,
Li Fuming,
Yang Zhihua,
Pan Shilie
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202101321
Subject(s) - melting point , boron , crystallography , ion , materials science , chemistry , organic chemistry , composite material
Herein, a new congruently melting mixed‐anion compound Cs 4 B 4 O 3 F 10 has been characterized as the first fluorooxoborate with [BF 4 ] involving heteroanionic units. Compound Cs 4 B 4 O 3 F 10 possesses two highly fluorinated anionic clusters and therefore its formula can be expressed as Cs 3 (B 3 O 3 F 6 ) ⋅ Cs(BF 4 ). The influence of [BF 4 ] units on micro‐symmetry and structural evolution was discussed based on the parent compound. More importantly, Cs 4 B 4 O 3 F 10 shows the lowest melting point among all the available borates and thus sets a new record for such system. This work is of great significance to enrich and tailor the structure of borates using perfluorinated [BF 4 ] units.