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- Title
A Pair of Enantiopure Cubane-Type Cu<sup>II</sup><sub>4</sub>O<sub>4</sub> Clusters: Synthesis, Structure, Chirality and Magnetism.
- Authors
Yin, Ji; Yin, Ting‐Ting; Gao, Chen; Wang, Bing‐Wu; Zhu, Yuan‐Yuan; Wu, Zong‐Quan; Gao, Song
- Abstract
A pair of enantiopure cubane-type CuII4O4 clusters was constructed from simple chiral ligands ( R or S)-2-[(2-hydroxy-1-phenylethylimino)methyl]phenol (H2L R or S). Single-crystal X-ray diffraction studies demonstrated that complexes 1 R and 1 S are enantiomers. They consist of a CuII4O4 cubane core in which the four CuII centres are linked by a μ3-oxo bridge. The four CuII ions in one cluster are all in a distorted square-pyramidal geometry. Circular dichroism (CD) spectroscopy also confirmed that complexes 1 R and 1 S are enantiomers and that the chirality was successfully transferred and amplified from the ligand to the coordination environment of the CuII ions. Magnetic susceptibility measurements show an overall antiferromagnetic interaction which could be fitted by using MAGPACK with a two parameter model ( J1 = -5.58 cm-1, J2 = 3.80 cm-1).
- Subjects
COPPER oxide; LIGANDS (Chemistry); ENANTIOMERS; CHIRALITY; MAGNETIC susceptibility measurement; ANTIFERROMAGNETISM
- Publication
European Journal of Inorganic Chemistry, 2014, Vol 2014, Issue 31, p5385
- ISSN
1434-1948
- Publication type
Article
- DOI
10.1002/ejic.201402608