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Metal–Metal Interactions in Dinuclear (triphos)Cobalt Complexes Exhibiting Mixed Valency

✍ Scribed by Katja Heinze; Gottfried Huttner; Olaf Walter

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
319 KB
Volume
1999
Category
Article
ISSN
1434-1948

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✦ Synopsis

The spectroscopic and electrochemical properties of a series leading to delocalized class-III behaviour while in 4 + the extended tetraoxoanthracence bridging ligand leads to a of dinuclear mixed-valence complexes containing two (triphos)Co units are reported: [(triphos)Co(L)Co(triphos)] + partial electron localization. Additionally, the different oxidation behaviour of the parent dicationic complexes 1a-(L = C 6 O 4 X 2 ; X = H, Cl, Br, I, Me: 2a-e + ; L = C 14 H 4 O 4 Me 2 : 4 + ). Complexes 2a-e + are bridged by tetraoxybenzene e 2+ and 3 2+ have been investigated and are explained on the basis of a qualitative MO model. ligands and exhibit very strong metal-metal interaction of electron delocalization and electron transfer within the

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✍ Gérard Colomb; Klaus Bernauer 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 German ⚖ 370 KB

## Abstract The synthesis of mixed‐ligand cobalt(III) complexes with (__S__)‐aspartic‐N‐monoacetic acid ((__S__)‐AMA) and different amino‐acids Na[Co((__S__)‐AMA)(AA)] (AA = gly, (__R__)‐ and (__S__)‐ala, val, phe, ser and leu) leads to a mixture of __cis__‐N‐ and __trans__‐N‐isomers. These isomers