Premium
Reactivity of Copper Complexes with Bis(piperidinyl)methane and Bis(quinolinyl)methane Ligands
Author(s) -
Stumpf TimDaniel J.,
Steinbach Manfred,
Würtele Christian,
Becker Jonathan,
Becker Sabine,
Fröhlich Roland,
Göttlich Richard,
Schindler Siegfried
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201700755
Subject(s) - chemistry , copper , ligand (biochemistry) , reactivity (psychology) , methane , intramolecular force , medicinal chemistry , inorganic chemistry , photochemistry , organic chemistry , medicine , biochemistry , alternative medicine , receptor , pathology
Copper complexes with bis(piperidinyl)methane (BP) and bis(quinolinyl)methane (BQ) ligands were investigated. A dinuclear carbonato‐bridged copper(II) complex as well as a dinuclear copper(I) complex with BP ligands were structurally characterized. The reaction of a copper(I)–BP complex was investigated by low‐temperature stopped‐flow techniques, which showed that the very fast formation of a bis(µ‐oxido)copper intermediate leads to an intramolecular ligand hydroxylation. However, substrates such as benzyl alcohol could also be oxidized with this complex. In contrast, no intermediates could be observed spectroscopically for complexes with the BQ ligand or derivatives of this ligand. Instead, complex reaction behavior was observed when copper(II) chloride was treated with BQ in air or under inert conditions. Several crystal structures helped to establish mechanisms for these reactions. A coordination polymer was obtained as an interesting reaction product.