Premium
The Effect of the Spacer of Bis(biurea) Ligands on the Structure of A 2 L 3 ‐type (A=anion) Phosphate Complexes
Author(s) -
Wu Biao,
Li Shaoguang,
Lei Yibo,
Hu Huaiming,
de Sousa Amadeu Nader,
Janiak Christoph,
Mathieson Jennifer S.,
Long DeLiang,
Cronin Leroy,
Yang XiaoJuan
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201405235
Subject(s) - crystallography , chemistry , hydrogen bond , ion , phosphate , crystal structure , ligand (biochemistry) , metal ions in aqueous solution , coordination number , coordination complex , urea , stereochemistry , metal , molecule , organic chemistry , biochemistry , receptor
By tuning the length and rigidity of the spacer of bis(biurea) ligands L, three structural motifs of the A 2 L 3 complexes (A represents anion, here orthophosphate PO 4 3− ), 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.