1432682-82-0Relevant articles and documents
Chelate effects in sulfate binding by amide/urea-based ligands
Jia, Chuandong,Wang, Qi-Qiang,Begum, Rowshan Ara,Day, Victor W.,Bowman-James, Kristin
, p. 6953 - 6957 (2015)
The influence of chelate and mini-chelate effects on sulfate binding was explored for six amide-, amide/amine-, urea-, and urea/amine-based ligands. Two of the urea-based hosts were selective for SO42- in water-mixed DMSO-d6 systems. Results indicated that the mini-chelate effect provided by a single urea group with two NH binding sites appears to provide enhanced binding over two amide groups. Furthermore, additional urea binding sites incorporated into the host framework appeared to overcome to some extent competing hydration effects with increasing water content.
Tris chelating phosphate complexes of bis(thio)urea ligands
Li, Rui,Zhao, Yanxia,Li, Shaoguang,Yang, Peiju,Huang, Xiaojuan,Yang, Xiao-Juan,Wu, Biao
, p. 5851 - 5860 (2013/07/05)
Two bisurea (L1, L2) and one bisthiourea (L 3) ligands were synthesized and their anion coordination behavior was studied. These ligands can readily form the tris chelates [PO 4(L)3]3- (1,