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Dynamic Directing Effect and Symmetric Correlation in Three pH‐Modulated 1,4‐Diazabicyclo[2.2.2]octane/Iodoargentate Hybrids
Author(s) -
Yu Tanlai,
Li Huihui,
Hao Pengfei,
Shen Junju,
Fu Yunlong
Publication year - 2016
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.201600757
Subject(s) - dabco , chemistry , octane , photoluminescence , crystallography , stereochemistry , organic chemistry , physics , optics
Three iodoargentate hybrids, [(Hdabco)(H 2 dabco)][(Ag 3 I 6 )] ( 1 ), [(Hdabco) 2 (H 2 dabco)][Ag 3 I 7 ] ( 2 ), and [(H 2 dabco · H 2 O)(AgI 3 )] ( 3 ) (dabco = 1,4‐diazabicyclo[2.2.2]octane), have been synthesized by simply changing the pH of the reaction solution. The hybrids 1 – 3 are all constructed exclusively of corner‐sharing AgI 4 tetrahedra, but they clearly exhibit different structural features (typical halozeotype in 1 and 2 , chiral chain in 3 ). Noteworthy, variation of the hydrogen‐bonded aggregating forms of dabco at different pH, regular modulation of the inorganic moieties from the [3 2 7 6 ] cage in 1 to the larger [3 2 11 4 ] cage in 2 and a three‐fold helical chain in 3 , as well as their intrinsic symmetric correlation reveal unique dynamic structural directing effects and structural adaptability of the iodoargentate framework. Moreover, the three compounds display wide‐band‐gap semiconductor properties (band gaps of about 3.70 eV for 1 , 3.49 eV for 2 , and 3.89 eV for 3 ) and photoluminescence properties (emission bands at about 430 nm for 1 , 467 nm for 2 ,and 460 nm for 3 ).