A crystalline T-shaped planar group 14 anion
Liu, Xiaona1, Dai, Yuyang1, Bao, Manling1, Wang, Wenjuan1, Li, Qianli3, Liu, Chunmeng1, Wang Xinping2*(王新平), Su, Yuanting1,2*(苏远停)
1College of Chemistry, Chemical Engineering and Materials Science, School of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China.
2State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing
3School of Chemistry and Chemical Engineering, Liaocheng University, Liao cheng
Chem. Sci., 2023, 14, 5722-5727
Abstract：Isolable T-shaped planar pnictogen compounds R(3)Pn were reported more than three decades ago and have been attracting burgeoning interest in recent years; T-shaped planar group 14 anions, isoelectronic to R(3)Pn, however, are still unknown. Herein, we report the synthesis, full characterization, and reactivity of the first crystalline T-shaped planar group 14 anion 4 bearing a trinitrogen pincer ligand. DFT calculations indicate that the tricoordinate germanium center features both an unoccupied 4p orbital and two lone pairs of electrons. Its electron-rich nature allows for the nucleophilic attack on the methyl iodine giving methyl-substituted complex 5 and facile oxidation of the germanium center by elemental sulfur and selenium to furnish unpresented organic anions bearing terminal Ge (sic) Ch (Ch = S or Se) double bonds.
链接：//pubs.rsc.org/en/content/articlelanding/2023/SC/D2SC07006E
