Synthesis and characterization of Δ-cis(N)-trans(O5)-RR sodium bis-((S)-α-alaninato-N-monopropionato)cobaltate(III) isomer

Autor:	František Jursík, Jana Ondráčková, Bohumil Hájek
Rok vydání:	1986
Předmět:	chemistry.chemical_classification Circular dichroism Crystallography chemistry Stereochemistry Sodium Absolute configuration chemistry.chemical_element General Chemistry Nuclear magnetic resonance spectroscopy Inorganic compound Visible spectrum Characterization (materials science)
Zdroj:	Collection of Czechoslovak Chemical Communications. 51:2109-2115
ISSN:	1212-6950 0010-0765
DOI:	10.1135/cccc19862109
Popis:	Of the 12 possible diastereoisomers only Δ-cis(N)-trans(O5)-(RR)-Na[Co(alamp)2] isomer was isolated. Possible reasons explaining stereospecific coordination of ligand are discussed in terms of steric intra- and interligand interactions arising from the mutual position of -CH3 and N-CH2-CH2- groups. These exclude all isomers with SS or RS configuration of secondary nitrogen atoms. For the determination of the absolute configuration visible absorption, 1H, 13C NMR, circular dichroism and molecular models were employed.
Databáze:	OpenAIRE
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