Crystal Structure of the Complex of 1,2-Bis[2-(o-hydroxyphenoxy)ethoxy]ethane with Ammonium Thiocyanate

The complex of the podand 1'2-bis2-(o-hydroxyphenoxy)ethoxy]ethane (L) with ammoniumthiocyanate, NH₄(SCN)L], was prepared, studied by single crystal X-ray diffraction. This is a host-guestcomplex; in its molecule the podand L is wrapped around the NH ₄ ⁺ cation, which forms hydrogen bondswith all the six oxygen atoms of the podand and one hydrogen bond with the sulfur atom of the SCN^- anion. The geometric parameters (bond lengths, bond angles, torsion angles, etc.) of the molecule of NH₄(SCN)L] and packing of the molecules in the crystal were determined. The molecules are linked into infinite polymeric chains by intermolecular hydrogen bonds O-H···NCS.