Supramolecular Self Assembly of [Cu(CN)₄]³⁻ Ions with Cationic {Ph₃Sn⁺} Units in the Presence of Neutral Bidentate Ligands

The supramolecular interplay of the Ph ₃ Sn⁺ unit and the [Cu(CN) ₄ ]³⁻ ion with either 4,4′-bipyridine (bpy), trans-1,2-bis(4-pyridyl)ethene (tbpe), 1,2-bis(4-pyridyl)ethane (bpe), pyrazine (pyz), or methylpyrazine (mepyz) as bidentate ligands in presence of H ₂ O has been investigated for the first time. The products obtained have the general formula [(Ph ₃ Sn) ₃ Cu(CN)₄·L·XH₂O], where L is a bidentate ligand and X = 0–2. H ₂ O molecules are usually coordinated to tin atoms and are involved in two significant O─H─N hydrogen bonds, wherein the nitrogen atoms belong either to the bidentate ligand or the M-coordinated cyanide ligands. The structures of these supramolecular coordination polymers were investigated by elemental analysis, X-ray powder diffraction, and IR, mass, and NMR spectra.

keywords:

• Bidentate ligands
• copper(I) cyanide
• supramolecular
• triphenyltin(IV) compounds