Crystal Structure of Ammonium(2.2.2‐cryptand) Thiocyanate Monohydrate

Crystals of the ammonium (2.2.2‐cryptand) thiocyanate monohydrate complex, [NH4(2.2.2‐Crypt)]+ × SCN- · H2O, were studied by X‐ray structural analysis: space group P2/c, a = 11.303(2)*angst;, b = 8.313(1)Å, c = 14.392(3)Å, β = 110.39(2)°, Z = 2, 3680 independent measured reflections, R = 0.064. This complex is of the guest–host type: the cryptand ligand cavity contains the NH4+ cation with statistically disordered H atoms forming H bonds with each of its O and N heteroatoms. The SCN- anions and H2O molecules are linked by H bonds to form chains that are infinite along the z axis.