caa a22 4500 465775446 CHVBK 20180323111940.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF01040776 doi (NATIONALLICENCE)springer-10.1007/BF01040776 Oxygenation of the cobalt(II) complex of an unsymmetrical bis-Schiff base [Elektronische Daten] [Sau-Fun Tan, Kok-Peng Ang, Lai-Har Ng, Alwyn Davies, Dan Oprescu] Summary: The cobalt(II) complex of an unsymmetrical bis-Schiff base. Co(dha, salen), has been prepared. In the presence of pyridine, it forms both monomeric superoxo and dimeric peroxo adducts with dioxygen. At −10°C and lower temperatures, the adduct formed in pyridine solution is mainly superoxo as shown by electronic and e.s.r. spectra as well as volumetric measurement of oxygen uptake. The solid adduct precipitated by addition of toluene is predominantly peroxo as shown by elemental analysis, i.r. spectrum, magnetic and thermogravimetric measurements. Comparison of the oxygen affinities of this complex and of the symmetrical Co(salen) is discussed. Chapman and Hall Ltd, 1990 Tan Sau-Fun Dept. of Chemistry, National University of Singapore, Kent Ridge, 0511, Singapore, Singapore aut Ang Kok-Peng Dept. of Chemistry, National University of Singapore, Kent Ridge, 0511, Singapore, Singapore aut Ng Lai-Har Dept. of Chemistry, National University of Singapore, Kent Ridge, 0511, Singapore, Singapore aut Davies Alwyn Dept. of Chemistry, University College London, 20 Gordon St., WC1H OAJ, London, UK aut Oprescu Dan Dept. of Chemistry, University College London, 20 Gordon St., WC1H OAJ, London, UK aut Transition Metal Chemistry Kluwer Academic Publishers 15/6(1990-12-01), 459-464 0340-4285 15:6<459 1990 15 11243 https://doi.org/10.1007/BF01040776 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01040776 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tan Sau-Fun Dept. of Chemistry, National University of Singapore, Kent Ridge, 0511, Singapore, Singapore aut NATIONALLICENCE 700 1- Ang Kok-Peng Dept. of Chemistry, National University of Singapore, Kent Ridge, 0511, Singapore, Singapore aut NATIONALLICENCE 700 1- Ng Lai-Har Dept. of Chemistry, National University of Singapore, Kent Ridge, 0511, Singapore, Singapore aut NATIONALLICENCE 700 1- Davies Alwyn Dept. of Chemistry, University College London, 20 Gordon St., WC1H OAJ, London, UK aut NATIONALLICENCE 700 1- Oprescu Dan Dept. of Chemistry, University College London, 20 Gordon St., WC1H OAJ, London, UK aut NATIONALLICENCE 773 0- Transition Metal Chemistry Kluwer Academic Publishers 15/6(1990-12-01), 459-464 0340-4285 15:6<459 1990 15 11243 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer