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Updated: May 21, 2025
![[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
Bis(Dipyrrinate) Based Bis(Germylenes): Synthesis, Reactivity, and UV-Vis Spectroscopic Analysis
Prakash Chandra Joshi1, Pratima Shukla1, Vishal Singh1
1Indian Institute of Technology Delhi (IIT Delhi), Hauz Khas, New Delhi, India.
Abstract:
The first examples of air and water stable bis(germylenes) 5-9 and bis(germacarbonyl) compounds 10-12 are reported. Bis(germylene monochloride) 5 is isolated by starting from bis(dipyrromethene) 4, which in turn has been synthesized by oxidizing bis(dipyrromethane) 3 using DDQ. Terephthaldehyde 1 and mesityl pyrrole 2 were the precursors for compound 3. Bis(germylene monochloride) 5 reacts with alcohols and phenol in the presence of a mild base (Cs₂CO₃) to afford bis(germylene alkoxides) 6-7 and bis(germylene phenoxide) 8, respectively. Compound 5's reaction with sodium pyrrolide has resulted in bis(germylene pyrrolide) 9. Further, compounds 7 and 9 react with elemental sulfur and selenium under ambient conditions, resulting in bis(germacarbonyl) compounds 10-12. The UV-Vis spectroscopic investigations on compounds 4-12 are done experimentally and computationally.
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