Anion Coordination of Bis‐bisurea Ligands: Aggregation of Dihydrogen Phosphate Anion into Oligomers and Infinite Chains1. Issue 10 (29th June 2015)

• Record Type: Journal Article
• Authors: Wu, Biao; Huo, Cuirong; Li, Shaoguang; Zhao, Yanxia; Yang, Xiao‐Juan
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 641:Issue 10(2015)
• Page Start: 1786
• Page End: 1791
• Publication Date: 2015-06-29
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201500243
• Languages: English
• ISSNs: 0044-2313

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A series of alkanediyl‐spaced bis‐bisurea ligands (<bold>L²</bold>–<bold>L⁴</bold>) 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 <bold>L²</bold> and <bold>L³</bold> coordinate with H₂PO₄^– anions to form a unique molecular "necklace" with an infinite (H₂PO₄^–)<italic>_n</italic> chain and surrounding ligand molecules. Meanwhile, two different dihydrogen phosphate‐water oligomers, (H₂PO₄)₆<bold>·</bold>(H₂O)₄ and (H₂PO₄)₄<bold>·</bold>(H₂O)₂, were observed in the complexes with the ligands <bold>L³</bold> and <bold>L⁴</bold>. In addition, solution anion binding properties of the ligands were studied by ¹H NMR and UV/Vis spectroscopy.</p> </abstract>