Anion Coordination of Bis‐bisurea Ligands: Aggregation of Dihydrogen Phosphate Anion into Oligomers and Infinite Chains |
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| Authors: | Biao Wu Cuirong Huo Shaoguang Li Yanxia Zhao Xiao‐Juan Yang |
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| Institution: | 1. Key Laboratory of Synthetic and Natural Functional, Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China;2. State Key Laboratory for Oxo Synthesis & Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China |
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| Abstract: | A series of alkanediyl‐spaced bis‐bisurea ligands ( L2 – L4 ) were synthesized and their anion coordination behavior studied. These ligands form interesting complexes with polymeric and oligomeric dihydrogen phosphate aggregates in the solid state. The ligands L2 and L3 coordinate with H2PO4– anions to form a unique molecular “necklace” with an infinite (H2PO4–)n chain and surrounding ligand molecules. Meanwhile, two different dihydrogen phosphate‐water oligomers, (H2PO4)6 · (H2O)4 and (H2PO4)4 · (H2O)2, were observed in the complexes with the ligands L3 and L4 . In addition, solution anion binding properties of the ligands were studied by 1H NMR and UV/Vis spectroscopy. |
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| Keywords: | Oligourea Dihydrogen phosphate Anion clusters Anion coordination NMR spectroscopy UV/Vis spectroscopy |
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