A polypseudorotaxane coordination polymer comprising Preyssler-type phosphotungstate and flexible N-donor ligands

Abstract

A coordination polymer based on Preyssler-type phosphotungstate, {Cu₄(L)₂(HL)(H₂O)₅[HNa(H₂O)P₅W₃₀O₁₁₀]}·2H₂L·4H₂O (1), has been hydrothermally synthesized and characterized by single crystal X-ray diffraction, powder X-ray diffraction, IR spectrum, element analysis, and thermogravimetric analysis. The structure shows that the asymmetry coordination of the N-donor ligands results in formation of chiral sub-building blocks (SBUs). The chiral SBUs were connected by Cu–O bonds and organic ligands to form a two-dimensional (2-D) structure. Furthermore, 1 represents the first 2D + 2D → 2D polypseudorotaxane framework based on the chiral lamellar structure; magnetic properties have been investigated as well.

Keywords:

• Phosphotungstate
• Preyssler-type
• polypseudorotaxane
• copper
• magnetism