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An Isolable Bis(Germylene)-Stabilized Plumbylone |
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| Authors: | Ming Chen Zhaoyin Zhang Zihao Qiao Prof Dr Lili Zhao Prof Dr Zhenbo Mo |
| Institution: | 1. State Key Laboratory and Institute of Elemento-Organic Chemistry, 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 and Institute of Elemento-Organic Chemistry, 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 |
| Abstract: | We report herein the synthesis of a stable plumbylone ( 3 ) by reduction of a bromodigermylplumbylene ( 2 ) with 2.2 equiv of potassium graphite (KC8). The molecular structure of 3 was established by a single-crystal X-ray diffraction study and features a two-coordinated Pb center with an acute Ge−Pb−Ge bond angle. Computational studies showed that this complex ( 3 ) possesses a singlet electronic ground state with a Pb0 center. Its high thermal stability can be most likely ascribed to the delocalization of π electrons over the Ge−Pb−Ge moiety. A preliminary reactivity study demonstrates that complex 3 can deliver Pb0 atoms to an organic azide producing a tetrameric imido complex (PbNDipp)4] (Dipp=2,6-iPr-C6H3, 4 ) and perform a metathesis reaction with GeCl2⋅dioxane to produce a bis(germylene)-stabilized germylone ( 5 ), highlighting the synthetic utility of 3 . |
| Keywords: | Bis(Germylene) Ligand Carboranes Germylone Plumbylone Zerovalent |