| Autor: |
Ogino, Kazuko, Uchida, Takateru, Nishide, Toshikazu, Fujita, Junnosuke, Saito, Kazuo |
| Zdroj: |
Chemistry Letters; July 1973, Vol. 2 Issue: 7 p679-682, 4p |
| Abstrakt: |
The complex [Co(en)2(l-praH)]Br3, where praH denotes 2-amino-1-propanol, was prepared and separated into two diastereoisomers, ΔL and ΔL. Their circular dichroism(CD) spectra changed remarkably by the change of pH of the solution. These changes were attributed to the dissociation of the alcoholic proton: [Co(en)2(l-praH)]3+\ightleftharpoons [Co(en)2(l-pra)]2++ H+. The deprotonated l-pra−chelate gave an exceptionally large vicinal contribution to the optical activity. The CD spectra of optically active [Co(en)2(etaH)]Br3(etaH = aminoethanol) and [Co(NH3)4(l-praH)]Br3are also given. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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