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2,6‐Diisopropylanilinium Bromobismuthates
Author(s) -
Pandey Souvik,
Nair Anju,
Andrews Alex P.,
Venugopal Ajay
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201601087
Subject(s) - chemistry , bismuth , halide , moiety , thermal stability , hydrogen bond , crystallography , band gap , inorganic chemistry , stereochemistry , molecule , organic chemistry , physics , quantum mechanics
A systematic approach to obtain bromobismuthates with various bismuth/halide ratios stabilised by 2,6‐diisopropylanilinium cations [ArNH 3 ] (Ar = 2,6‐diisopropylphenyl) is presented. New bromobismuthate compounds [(ArNH 3 )(BiBr 4 )] ∞ ( 1 ), [(ArNH 3 ) 3 (Bi 2 Br 9 )] ∞ ( 2 ), [(ArNH 3 ) 3 (BiBr 6 )] ( 3 ) and [(ArNH 3 ) 4 (BiBr 6 )(Br)] ( 4 ) with Bi/Br ratios of 1:4, 1:4.5, 1:6 and 1:7 have been isolated and structurally characterised. [Bi 2 Br 9 ] ∞ is a new structural motif in halobismuthate chemistry. In all the compounds, extensive hydrogen bonding is observed between the bromobismuthate moiety and the 2,6‐diiosopropylanilinium cation, thus stabilising the inorganic–organic hybrid structures. Preliminary optical spectroscopic studies indicate that the optical band gap can be tuned by controlling the bismuth/halide ratio, which results in different dimensionalities in the halobismuthate structure. The compounds exhibit thermal stability up to 250 °C.