A Nearly Planar Water Sheet Sandwiched between Strontium−Imidazolium Carboxylate Coordination Polymers

The crystal structure of a strontium−imidazolium polymeric material
obtained from the reaction of zwitterionic 1,3-bis(carboxymethyl)imidazolium with SrCO3 (2:1) in water is reported. The compound
crystallized in the orthorhombic space group Pcc2 with a = 14.545(3) Å, b = 8.514(5) Å, c = 8.5619(14) Å, V = 1060.2(6) Å3, and
Z = 2. The macromolecular structure is constructed from
8-coordinate strontium, which binds to six different imidazolium
carboxylate molecules. The two-dimensional polymer is separated
by water sheets in which the water molecules form near-planar
hexagons.