|
|||||
|
|
Isolation and Reactivity of Homoleptic Diphosphene Lead Complexes |
|
| Authors: | Ming Chen Zhaoyin Zhang Jun Liu Gongyu Li Prof?Dr Lili Zhao Prof?Dr Zhenbo Mo |
| Institution: | 1. State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China
These authors contributed equally to this work.;2. Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816 China These authors contributed equally to this work.;3. State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Science, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China;4. Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816 China;5. State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China |
| Abstract: | Due to their limited capacity for π-backdonation, isolation of π-complexes of main-group elements remains a great challenge. We report herein the synthesis of a homoleptic diphosphene lead complex ( 2 ) from the degradation of P4 with a bis(germylene)-stabilized Pb(0) complex. Structural and computational studies showed that 2 possesses significant π bonding interactions between Pb atom and diphosphene ligands, which is reminiscent of transition-metal diphosphene complexes. Consistent with its unique electronic structure, complex 2 can deliver Pb(0) atoms to perform redox reaction with an iminoquinone to produce a cyclic plumbylene ( 4 ) and perform 2,5-dimethyl-3,4-dimethylimidazol-1-ylidene (IMe2Me2) induced phosphorus cation abstraction to give an anionic PbP3 complex ( 6 ). |
| Keywords: | Carboranes Diphosphene P4 Activation Plumbylone π-Complex |