Fluxional motion in a dinuclear copper(i) complex with a propeller-type ligand: metal hopping on both sides

Hyunchul Kwon; Eunsung Lee

doi:10.1039/c8dt03884h

Fluxional motion in a dinuclear copper(i) complex with a propeller-type ligand: metal hopping on both sides

Dalton Trans. 2018 Dec 28;47(48):17206-17210. doi: 10.1039/c8dt03884h. Epub 2018 Nov 22.

Authors

Hyunchul Kwon¹, Eunsung Lee²

Affiliations

¹ Department of Chemistry, Pohang University of Science and Technology, 77 Cheongam-Ro, 37673, Pohang, Republic of Korea. eslee@postech.ac.kr.
² Department of Chemistry, Pohang University of Science and Technology, 77 Cheongam-Ro, 37673, Pohang, Republic of Korea. eslee@postech.ac.kr and Division of Advanced Materials Science, Pohang University of Science and Technology, 77 Cheongam-Ro, 37673, Pohang, Republic of Korea.

PMID: 30465049
DOI: 10.1039/c8dt03884h

Abstract

The first study of fluxional motion in [Cu₂(2-HPB)(MeCN)₂Cl₂] (1,2-HPB = hexa(2-pyridyl)benzene) is presented. For detailed examination of the fluxional motion mechanism, a monofluorinated derivative of the ligand (MFHPB) and its copper(i) complexes were synthesized and characterized. The solution NMR studies of monofluoro copper(i) complex 1a suggest the existence of five species in equilibrium. NMR spectra and DFT calculations suggest the fluxional motion of 1 resulting in the "metal hopping process" of two copper(i) ions.