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![[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
Reactivity of [{Cp'Fe(μ-I)}2] toward 3-phospha- and 3-arsaethynolate
Katharina Münster1, Jasper Mindner1, William-Dale Möller1
1Institut für Anorganische und Analytische Chemie Technische Universität Braunschweig Hagenring 30, 38106, Braunschweig, Germany.
Abstract:
[{Cp'Fe(μ-I)}2] (I; Cp' = η5-1,2,4-(Me3C)3C5H2) reacts with [Na(OCP)(1,4-dioxane)x] and K(OCAs) to yield [(Cp'Fe)2(μ-η2:η2-P2)(μ-CO)] (1) and [(Cp'Fe)2(μ-η2:η2-As2)(μ-CO)] (3), respectively. While complex 1 was previously accessed by Scherer and co-workers using rather harsh reaction conditions, the new synthetic method already proceeds at ambient temperature. UV-light irradiation of 1 and 3 induces CO release forming complexes [(Cp'Fe)2(μ-η2:η2-E2)] (E = P (2) and As (4)), respectively. However, both reactions also yielded several byproducts which were spectroscopically identified. Furthermore, upon thermally triggered CO elimination from 3 the Fe3As6-cluster [(Cp'Fe)3(As3)2] (5) is isolated in low yield. In addition, zero-field 57Fe Mössbauer spectra were recorded on complexes 1-4 and computational studies complement the experimental findings and provide additional insights into the bonding in these complexes and the reaction pathways resulting in the formation of complexes 1-4.
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