Solvothermal Synthesis, Characterization and Crystal Structure of a New Supramolecular Compound Composed by 1,10-Phenanthroline Ligand with Bi(III) and Cu(II)

Abstract

The solvothermal reaction of bismuth(III) iodide, 1,10-phenanthroline (phen) and copper(I) iodide in ethanol solution yielded the supramolecular compound, namely [Cu^I(phen)₂]·[Bi^III(phen)I₄] (1). The crystallizing sample was characterized by elementary analysis. Its structure was determined by single crystal X-ray diffraction experiment. The compound crystallizes in the monoclinic system and adopts a centrosymmetric space group of P2₁/c. The asymmetric unit contains one [Cu^I(phen)₂]⁺ cation and one [Bi^III(phen)I₄]^– anion. The Cu(I) is coordinated by two 1,10-phenanthroline ligands with a tetrahedral geometry. In the anion, the Bi(III) adopt a octahedral coordination sphere constructed by two N atoms from one phen ligand and four I^–. By virtue of p-p stacking interaction, all adjacent cations connect each other along c axis direction and form a column-like supramolecular structure. And along the crystal plane group of {1 0 0}, these columns are fused together by all [Bi(phen)I₄]^– anions through other p-p stacking interactions to form a wave-like supramolecular layer.