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. 2020 Apr 20;25(8):1907. doi: 10.3390/molecules25081907

Figure 1.

Figure 1

Schematic structures of molecules and their complexes, studied in this work. (a) diphenylphosphoric 1, dimethylphosphoric 2, diphenylphosphinic 3, and dimethylphosphinic 4 acids. (b) Self-associates of phosphinic and phosphoric acids. (c) Heteroassociates of phosphinic and phosphoric acids.