TY - JOUR
T1 - A flexible bis(pyridylcarbamate) anion receptor
T2 - Binding of infinite double-stranded phosphate, [-sulfate-(H2O)2-]n, and hydrogen-bridged helical perchlorate chain
AU - Xia, Yana
AU - Wu, Biao
AU - Liu, Yanyan
AU - Yang, Zaiwen
AU - Huang, Xiaojuan
AU - He, Li
AU - Yang, Xiao Juan
PY - 2009
Y1 - 2009
N2 - Anion complexation of a flexible bis(pyridylcarbamate) receptor, 3-pyridinyl-carbamic-acid-1,2-ethanediylester (L), is reported. Upon addition of a series of inorganic acids (H3PO4, H2SO 4, HClO4, HCl and HBr), the ligand L can be doubly protonated and bind the anions through hydrogen bonding interactions, affording the adducts 1-5. The binding modes of the protonated ligand ([LH 2]2+) with anions in 1-5 in the solid state are established by X-ray single crystal diffraction. Of particular interest is that the three oxoanion complexes (1-3) feature intriguing anionic polymer fashions, such as the novel double-stranded dihydrogen phosphate chain in 1, the infinite [-sulfate-(H2O)2-]n chain in 2, and hydrogen-bridged helical perchlorate chain in 3. For complexes 4 and 5, the packing diagram displays a layered structure with the halide anions located between the adjacent cationic arrays. Receptor L can selectively crystallize with the sulfate anion from the acid mixture H3PO4, H 2SO4, HClO4, HCl and HBr.
AB - Anion complexation of a flexible bis(pyridylcarbamate) receptor, 3-pyridinyl-carbamic-acid-1,2-ethanediylester (L), is reported. Upon addition of a series of inorganic acids (H3PO4, H2SO 4, HClO4, HCl and HBr), the ligand L can be doubly protonated and bind the anions through hydrogen bonding interactions, affording the adducts 1-5. The binding modes of the protonated ligand ([LH 2]2+) with anions in 1-5 in the solid state are established by X-ray single crystal diffraction. Of particular interest is that the three oxoanion complexes (1-3) feature intriguing anionic polymer fashions, such as the novel double-stranded dihydrogen phosphate chain in 1, the infinite [-sulfate-(H2O)2-]n chain in 2, and hydrogen-bridged helical perchlorate chain in 3. For complexes 4 and 5, the packing diagram displays a layered structure with the halide anions located between the adjacent cationic arrays. Receptor L can selectively crystallize with the sulfate anion from the acid mixture H3PO4, H 2SO4, HClO4, HCl and HBr.
UR - https://www.scopus.com/pages/publications/70350064738
U2 - 10.1039/b904253a
DO - 10.1039/b904253a
M3 - Article
AN - SCOPUS:70350064738
SN - 1466-8033
VL - 11
SP - 1849
EP - 1856
JO - CrystEngComm
JF - CrystEngComm
IS - 9
ER -