Brunner, Henri and Tsuno, Takashi and Bodensteiner, Michael and Gaertner, Stefanie and Miyahara, Chiemi and Ito, Seera and Kurosawa, Takaki and Koyama, Kazuhiro (2016) Co-Crystallization of Half-Sandwich (R-M,R-C)/(S-M,R-C) Diastereomers in Single Crystals. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (35). pp. 5405-5410. ISSN 1434-1948, 1099-0682
Full text not available from this repository. (Request a copy)Abstract
Diastereomer separation by fractional crystallization is the most important method for the resolution of enantiomers in research as well as in industry. Herein we describe two different types of diastereomer co-crystallization, which impede diastereomer separation. The two diastereomers (R-Fe,R-C)- and (S-Fe,R-C)-[CpFe(Prophos)PPh(OMe)(2)]PF6, differing only in the metal atom configuration, form 1:1 co-crystals with a racemate-like lattice. Between the (R-Fe,R-C) and (S-Fe,R-C) diastereomers there is an almost-inversion center and the (R-Fe,R-C)/(S-Fe,R-C) pair repeats as a kind of dimer in the lattice. Crystallization of a 50:50 diastereomer mixture of (R-Ru,R-C)- and (S-Ru,R-C)-[MeCpRu(Prophos)Cl] gave (R-Ru,R-C)/(S-Ru,R-C) 7:93 co-crystals, and another crystallization afforded diastereomerically pure (S-Ru,R-C)-[MeCpRu(Prophos)Cl]. In the co-crystal, the 93% component (S-Ru,R-C)-[MeCpRu(Prophos)Cl] dictates the build-up of a conglomerate-like lattice, and the 7% component (R-Ru,R-C)-[MeCpRu(Prophos)Cl] has to adopt its M-Prophos chelate ring conformation, although diastereomerically pure (R-Ru,R-C)-[MeCpRu(Prophos)Cl] has a completely different chelate ring conformation.
| Item Type: | Article |
|---|---|
| Additional Information: | ursprüngliche DOI war falsch, ich habe die richtige eingetragen /gup |
| Uncontrolled Keywords: | COMPLEXES; RESOLUTION; CHIRALITY; LIGANDS; RU(II); CH/PI; Sandwich complexes; Diastereomers; Co-crystallization; Configuration determination; X-ray crystallography |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Prof. Dr. Henri Brunner |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Mar 2019 11:36 |
| Last Modified: | 15 Mar 2019 11:36 |
| URI: | https://pred.uni-regensburg.de/id/eprint/3859 |
Actions (login required)
 |
View Item |
