Details

Autor(en) / Beteiligte

• Strasak, Milan
• Bachraty, Frantisek

Titel

SYNTHESIS AND CHARACTERIZATION OF COLBALT(III) COMPLEXES WITH A STEREOSPECIFIC LIGAND DERIVED FROM S-PROLINE

Ist Teil von

• Journal of coordination chemistry, 1984-03, Vol.13 (2), p.105-112

Ort / Verlag

Taylor & Francis Group

Erscheinungsjahr

1984

Quelle

Taylor & Francis Journals Auto-Holdings Collection

Beschreibungen/Notizen

• This paper concerns the preparation, separation, and characerization of cobalt(III) complexes in which 2S, 2′S-1,1′-(ethane-1,2-diyl)bis(pyrrolidine-2-carboxylate), (pren), acts as etradentate ligand and the other two positions in the coordination sphere are occupied by monodentate or bidentate groups. The complex [Co(pren)(H 2 O) 2 ] + exists only as the cis-α isomer, while in the case of [Co(pren)en] + complexes, substantial yields of both cis-α and cis-β isomers have been isolated through a series of chromatographic steps and fractional crystallizations. The geometrical and optical configurations are assigned on the basis of absorption, circular dichroism, and 13 C NMR spectra. In addition, the IR spectra of the complexes are discussed.