Isolation of an Anionic Dicarbene Embedded Sn2P2 Cluster and Reversible CO2 Uptake

Abstract

Abstract Decarbonylation of a cyclic bis‐phosphaethynolatostannylene [(ADC)Sn(PCO)]2 based on an anionic dicarbene framework (ADC = PhC{N(Dipp)C}2; Dipp = 2,6‐iPr2C6H3) under UV light results in the formation of a Sn2P2 cluster compound [(ADC)SnP]2 as a green crystalline solid. The electronic structure of [(ADC)SnP]2 is analyzed by quantum‐chemical calculations. At room temperature, [(ADC)SnP]2 reversibly binds with CO2 and forms [(ADC)2{SnOC(O)P}SnP]. [(ADC)SnP]2 enables catalytic hydroboration of CO2 and reacts with elemental selenium and Fe2(CO)9 to afford [(ADC)2{Sn(Se)P2}SnSe] and [(ADC)Sn{Fe(CO)4}P]2, respectively. All compounds are characterized by multinuclear NMR spectroscopy and their solid‐state molecular structures are determined by single‐crystal X‐ray diffraction.

Keywords

• anionic dicarbene
• carbon dioxide
• cluster
• main‐group
• tin phosphorus