N. C. Kasuga, K. Yamaguchi, Y. Ohashi
Sep 15, 1995
Citations
0
Influential Citations
0
Citations
Journal
Acta Crystallographica Section C-crystal Structure Communications
Abstract
The potassium salt of an ω-hydroxycarboxylic acid with five ethereal O atoms, dipotassium bis(2-{[2-(2-{2-[2-(2-hydroxyethoxy)phenoxy]ethoxy}phenoxy)ethoxy]methyl}benzoate) tetrahydrate, 2K + .2C 26 H 27 O 8 - .4H 2 O, forms a dimeric structure with twofold symmetry, containing two polyether chains and water molecules. The water molecule lying on the twofold axis forms a bridge between the two polyether complexes by coordination to two K + ions. The distance between the K + ions is 4.231(3)A. Each polyether chain wraps around one cation, taking an S-like conformation. The K + ion is ninefold coordinated by six ethereal O atoms, including one from another ether chain of the dimer, one hydroxyl group and two water molecules, one of which lies on the twofold axis. O atoms of carboxylato groups do not participate in coordination.