Matthäus J. Speck on Muck Rack

Matthäus J. Speck

As seen in: Chemistry World
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Articles

Redox Properties and Electron Transfer in a Triarylamine-substituted HS-Co2+/LS-Co3+ Redox Couple

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By Holm Petzold, Matthäus J. Speck, Linda Schnaubelt, Eugenia Dmitrieva
| Chemistry World Verified
A new tridentate phenanthrolin-pyridyl-based ligand 1 containing a redox active Tara (triaryl amine) unit has been developed (1 = 4-((6-(1,10-phenanthrolin-2-yl)pyridin-2-yl)oxy)-N,N-di-p-tolylaniline). The complex [Co (1) ](ClO /BF ) was prepared and the order of the oxidation steps was analysed by cyclic voltammetry and EPR/UV-vis-NIR spectroelectrochemistry. Oxidation of [Co (1) ] to [Co (1 ) ] proceeds in two steps. The first step is the Co centred oxidation to [Co (1) ] (E ’ = 284 mV vs.
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1H NMR spectroscopic Elucidation in Solution of the Kinetics and Thermodynamics of Spin Crossover for an exceptionally robust Fe2+ Complex

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By Holm Petzold, Paul Djomgoue, Gerald Hörner, Matthäus J. Speck
| Chemistry World Verified
Abstract: A series of Fe SCO (Spin Crossover) complexes [Fe(5/6)] employing hexadentate ligands (5/6) with cis/trans-1,2-diamino cyclohexanes (4) as central building blocks were synthesised. The ligands were obtained by reductive amination of 4 with a 2,2’-bipyridyl-6-carbaldehyde or 1,10-phenantroline-2-carbaldehyde 3.
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