✦ LIBER ✦
Self-assembling chiral metallo-clefts; synthesis and molecular structure of N,N′-bis(12H-benzo[α]xanthen-12-ylidene)-1,2-ethanediamine zinc(II)-dichloride complex
✍ Scribed by Tjeerd Barf; Johan F. G. A. Jansen; Fré van Bolhuis; Ben L. Feringa; Anthony L. Spek
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 815 KB
- Volume
- 112
- Category
- Article
- ISSN
- 0165-0513
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✦ Synopsis
Abstract
Bulky ligands for cleft‐type metal complexes were synthesized from thio ketones and diamines in yields varying from 20–80%. A molecular structure determination of one ligand N,N′‐bis(12__H__‐benzo[a]‐xanthen‐12‐ylidene)‐1,2‐propanediamine (19) was performed. A metallocleft was constructed by a self‐assembling process with zinc(II) chloride. A crystallographic study of this zinc complex (24) revealed surprisingly that an anti‐syn inversion of the imine moieties of the ligand had taken place during complexation.