Tethered Heavy Dicarbene Analogues: Synthesis and Structure of Ditetryldiyl Ethers (Ar′E)₂(μ-O) (E = Ge, Sn; Ar′ = C₆H₃-2,6-(C₆H₃-2,6-ⁱPr₂)₂)

Ditetryldiyl ethers (Ar′E)2(μ-O) (E = Ge, Sn; Ar′ = C6H3-2,6-(C6H3-2,6-iPr2)2) which contain a pair of two-coordinate Sn or Ge atoms were successfully prepared by the reaction of the corresponding dimetallylene (Ar′E)2 with 1 equiv of pyridine N-oxide. The tin oxide was found to cocrystallize with a hydroxide impurity: {Ar′Sn(μ-OH)}2. Structural determination revealed a slightly bent oxide E–O–E core (E = Ge, 154.8(1)°; E = Sn, 154.7(3)°) and a trans orientation of the Ar′ groups in each complex. The compounds were also characterized by NMR and electronic spectroscopy.本研究通过相应二金属烯类化合物(Ar′E)₂与1当量吡啶N-氧化物的反应，成功合成了二(二芳基)桥氧二金属醚类化合物(Ar′E)₂(μ-O)（其中E = Ge, Sn；Ar′ = C₆H₃-2,6-(C₆H₃-2,6-iPr₂)₂），该类化合物结构中包含一对双配位的锡或锗原子。其中锡的氧化物配合物可与羟基杂质共结晶，共结晶产物为{Ar′Sn(μ-OH)}₂。结构解析结果显示，两类配合物的E-O-E桥氧核心均呈轻微弯曲构型（E为Ge时键角为154.8(1)°，E为Sn时为154.7(3)°），且每个配合物中的Ar′基团均采取反式空间排布。上述化合物还通过核磁共振波谱（NMR）与电子光谱完成了表征。