Microwave synthesis, spectroscopy, thermal analysis and crystal structure of an one-dimensional polymeric {[Cu(4,4′-bipy)(H2O)3(SO4)] · 2H2O}n complex

A metal organic–inorganic coordination framework formulated as {[Cu(4,4′-bipy)(H2O)3(SO4)] · 2H2O}n (1) (where 4,4′-bipy = 4,4′-bipyridine) has been successfully prepared by microwave synthesis. The title complex has been characterized by single crystal X-ray crystallography, FT-IR spectroscopy and thermal analysis. Complex (1) is an one-dimensional (1D) polymer in which 4,4′-bipy acts as a bridging ligand supporting the formation of infinite [Cu(4,4′-bipy)(H2O)3(SO4)] chains. The packing diagram shows that a 3D network is formed via hydrogen bonds. The infrared spectra and thermographic data are consistent with the chemical formula.

A new polymorph of metal organic–inorganic coordination framework formulated as {[Cu(4,4′-bipy)(H2O)3(SO4)] · 2H2O}n has been successfully prepared by microwave synthesis. An extended 1D [Cu(4,4′-bipy)(SO4)(H2O)3]n chains uns parallel to the ab plane. Adjacent layers are rotated by 60° to produce virtual hexagonal cavities in projection along the crystallographic c-axis. The water molecules of crystallization occupy these hexagonal channels.Figure optionsDownload as PowerPoint slide