Reaction of copper (II) carboxylate dimers with copper (II) chloride dihydrate produces a chloride bridged intermediate as shown by FT-IR. Addition of a new carboxylate ligand forms a monosubstituted product which has been identified by elemental analysis, DSC, FT-IR, polarized optical microscopy, SQUID magnetic susceptibility, and variable temperature XRD. These monosubstituted products exhibit liquid crystalline mesophases. Melting points for mixed ligand products are much lower by comparison with copper(II) butanoate parent specie. Both X-ray diffraction and polarized optical microscopy suggest that the rectangular columnar mesophase of the copper(II) butanoate parent is disrupted. The new mesophase exhibits a drastically lowered melting point but retains the antiferromagnetic behavior consistent with the copper dimer molecular structure.

Synthesis and characterization of novel monosubstituted copper dimer liquid crystals

245th National Meeting (2013)

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