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Updated: Jun 5, 2026

Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants
Published on: October 19, 2017
Ethyl [(2-hydroxy-phen-yl)(pyridinium-2-ylamino)meth-yl]phospho-nate methanol solvate
Ming-Xia Li1, Miao-Li Zhu, Li-Ping Lu
1Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China.
Abstract:
In the title compound, C(14)H(17)N(2)O(4)P·CH(3)OH, the planes of the pyridinium-2-ylamino and 2-hydroxy-phenyl groups form a dihedral angle of 75.6 (1)°, with the pyridinium NH group and the 2-hydroxy-phenyl OH group pointing in opposite directions. Three intra-molecular hydrogen bonds are observed. Two phospho-nate and two methanol mol-ecules are connected by O-H⋯O hydrogen bonds as a centrosymmetric dimeric cluster, and inter-act further with other dimeric clusters via N-H⋯O, O-H⋯O and C-H⋯O hydrogen bonds and C-H⋯π inter-actions, resulting in a sheet structure.
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