Structural interconversion facilitated by a bifunctional ligand: a covalently linked 2D CuII sheet [Cu(3-pyOH)2(O2CCF3)2] n and a hydrogen-bond linked 2D CuII sheet [Cu(3-pyOH2)(O2CCF3)2(thf) 2]n

Abstract

A covalently linked 2D Cu ^II compound, [Cu(O ₂ CCF ₃ ) ₂ (3-pyOH) ₂ ] _n 1 (3-pyOH = 3-hydroxypyridine), when dissolved in thf, undergoes conversion to a hydrogen-bond linked 2D Cu ^II compound, [Cu(O ₂ CCF ₃ ) ₂ (3-pyOH) ₂ (thf) ₂ ] 2, which upon heating or standing at 23 °C for a few hours is converted back to compound 1 by losing the coordinated thf molecule; weak ferromagnetic interactions between Cu ^II centres dominate in both compounds.