A coordinatively saturated sulfate encapsulated in a metal-organic framework functionalized with urea hydrogen-bonding groups

摘要

A functional coordination polymer decorated with urea hydrogen-bonding donor groups has been designed for optimal binding of sulfate;self-assembly of a tripodal tris-urea linker with Ag_2SO_4 resulted in the formation of a 1D metal-organic framework that encapsulates SO_4~(2-) anions via twelve complementary hydrogen bonds,which represents the highest coordination number observed for sulfate in a natural or synthetic host.