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- Title
The Effect of the Spacer of Bis(biurea) Ligands on the Structure of A<sub>2</sub>L<sub>3</sub>-type (A=anion) Phosphate Complexes.
- Authors
Wu, Biao; Li, Shaoguang; Lei, Yibo; Hu, Huaiming; de Sousa Amadeu, Nader; Janiak, Christoph; Mathieson, Jennifer S.; Long, De ‐ Liang; Cronin, Leroy; Yang, Xiao ‐ Juan
- Abstract
By tuning the length and rigidity of the spacer of bis(biurea) ligands L, three structural motifs of the A2L3 complexes (A represents anion, here orthophosphate PO43−), namely helicate, mesocate, and mono-bridged motif, have been assembled by coordination of the ligand to phosphate anion. Crystal structure analysis indicated that in the three complexes, each of the phosphate ions is coordinated by twelve hydrogen bonds from six surrounding urea groups. The anion coordination properties in solution have also been studied. The results further demonstrate the coordination behavior of phosphate ion, which shows strong tendency for coordination saturation and geometrical preference, thus allowing for the assembly of novel anion coordination-based structures as in transition-metal complexes.
- Subjects
ORTHOPHOSPHATES; METAL complexes; ANIONS; METAL ions; HYDROGEN bonding
- Publication
Chemistry - A European Journal, 2015, Vol 21, Issue 6, p2588
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201405235