Copper(I) and silver(I) complexes containing the enantiopure N,N-bidentate 1,3-bis[4′-(S)-isopropyloxazolin-2′-yl]benzene ((S,S)-iPr-pheboxH) ligand

The reaction of CuX (X = I, Br, Cl) with (S,S)-iPr-pheboxH = 1,3-bis[4′-(S)-isopropyloxazolin-2′-yl]benzene in 2:1 molar ratio allows us to synthesize tetranuclear complexes [Cu4X4(к2-N,N-iPr-pheboxH)2] (X = Cl (1), Br (2), I (3)). The polymeric species [Cu4I4(κ2-N,N-iPr-pheboxH)2]n (4) has been prepared by reaction of CuI with (S,S)-iPr-pheboxH in 1.5:1 molar ratio. Also, polymeric silver species {[Ag(κ2-N,N-iPr-pheboxH)][X]}n (X = CF3SO3 (7a), SbF6 (7b), PF6 (7c)) have been synthesized by reaction of the corresponding silver salt and (S,S)-iPr-pheboxH in 1:1 molar ratio. The structures of the tetranuclear complexes 1–3 as well as of the polymeric species [Cu4I4(κ2-N,N-iPr-pheboxH)2]n (4) and {[Ag(κ2-N,N-iPr-pheboxH)][PF6]}n (7c) have been determined by single crystal X-ray analysis.

Graphical abstractStructurally diverse copper(I) and silver(I) complexes have been synthesized by reaction of 1,3-bis[4′-(S)-isopropyloxazolin-2′-yl]benzene with different copper(I) and silver(I) precursors. Tetramer cubane-type structures [Cu4X4(κ2-N,N-iPr-pheboxH)2] (X = Cl (1), Br (2), I (3)) and new and interesting polymeric species [Cu4I4{κ2-N,N-iPr-pheboxH}2]n (4) and {[Ag(κ2-N,N-iPr-pheboxH)][PF6]}n (7c) have been determined by X-ray analysis.Figure optionsDownload full-size imageDownload as PowerPoint slide