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Chirality transfer based on reversible C-C bond formation/breaking in nickel(II) complexes
Tatsuya Kawamoto1, Narumi Suzuki, Takeshi Ono
1Department of Chemistry, Kanagawa University, Hiratsuka, Kanagawa 259-1293, Japan. kaw@kanagawa-u.ac.jp
Chemical Communications (Cambridge, England)
|October 24, 2012
Summary
Researchers synthesized a novel nickel(II) complex from myrtenal-derived benzothiazoline. This complex exhibits reversible conversion between Schiff base and non-innocent types, showcasing unique helical and asymmetric configurations.
Area of Science:
- Coordination Chemistry
- Organic Synthesis
- Stereochemistry
Background:
- Benzothiazoline derivatives are versatile ligands in coordination chemistry.
- Nickel(II) complexes offer tunable electronic and structural properties.
- Chiral ligands are crucial for developing stereoselective catalysts and materials.
Purpose of the Study:
- To synthesize and characterize a novel nickel(II) complex derived from a chiral benzothiazoline.
- To investigate the structural and configurational transformations of the synthesized nickel(II) complex.
- To explore the potential of myrtenal-derived ligands in creating complexes with specific stereochemical outcomes.
Main Methods:
- Reaction of (1R)-(-)-myrtenal-derived benzothiazoline with nickel(II) acetate in ethanol.
- Characterization of the resulting nickel(II) complex using spectroscopic and crystallographic techniques.
- Investigation of the complex's reversible conversion under specific conditions.
Main Results:
- Exclusive formation of a Schiff base-type nickel(II) complex with M helical configurational myrtenyl arms.
- Demonstration of the reversible conversion of the Schiff base complex to a non-innocent-type complex.
- Observation of additional S,S configurational asymmetric carbon centers in the non-innocent-type complex.
Conclusions:
- The study successfully synthesized a novel chiral nickel(II) complex with a unique helical structure.
- The complex exhibits reversible configurational changes, highlighting its dynamic nature.
- This work contributes to the understanding of stereochemistry in nickel(II) complexes and Schiff base chemistry.
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