Helical silver(I) coordination polymer with oxazoline-containing ligand: Structure, non-linear and ferroelectric property

A new coordination polymer [Ag4(dob)4(BF4)4] (1) was synthesized by reaction of rigid ligand 1,3-di(2-oxazolinyl)benzene (dob) with silver(I) tetrafluoroborate and characterized by elemental analysis, single crystal X-ray diffraction and electrospray mass spectrometry. The complex has one-dimensional (1D) helical chain structure which is further linked together by Ag⋯F and hydrogen bonding interactions to form a three-dimensional (3D) supramolecular structure. Complex 1 crystallizes in the noncentrosymmetrical space group and shows second harmonic generation (SHG) and ferroelectric property.