Reactions of (O→Ge)-bischelate dibromogermane (L⁷CH₂)₂GeBr₂ (4c) with trimethyliodosilane and trimethylsilyl triflate proceed with the substitution of only one bromine atom and yield (O→Ge)-bischelate monobromogermanes (L⁷CH₂)₂Ge(Br)X (8c, X = I; 9c, X = OTf; LⁿCH₂ = lactamomethyl C,O-chelate ligand; n = lactam ring size). According to X-ray crystal analysis data, triflate 9c is characterized by nearly ionic structure with the monodentate ligand and anion in trans-positions. The configuration of the germanium atom in the complex is intermediate between trigonal bipyramidal and square pyramidal. Quantum chemical calculations show the absence of additional coordinate bonding between the germanium atom and anion.

Dynamic ¹H NMR spectroscopy (¹H DNMR) was used to study the stereochemical non-rigidity of monobromides 8c and 9c. Activation parameters for the inversion of the germanium atom configuration were calculated in various solvents. Based on the ¹H DNMR data and quantum chemistry calculations, possible mechanisms of permutational isomerization are discussed.

的（O→Ge）的-bischelate dibromogermane（L反应⁷ CH ₂）₂ GEBR ₂（图4c）与三甲基碘硅烷和三甲基甲硅烷三氟甲磺酸酯与只有一个溴原子和产率（O→Ge）的置换进行-bischelate monobromogermanes（L ⁷ CH ₂）₂ Ge（Br）X（8c，X = I；9c，X = OTf； L ⁿ CH ₂  =内酰胺 甲基C，O-螯合物；n =内酰胺环尺寸）。根据X射线晶体分析数据，三氟甲磺酸9c的特征是具有接近离子结构，单齿配体和阴离子处于反式-位置。络合物中锗原子的构型介于三角形双锥体和正方形锥体之间。量子化学计算表明，锗原子与阴离子之间没有额外的配位键。

使用动态¹ H NMR光谱（¹ H DNMR）研究一溴化物8c和9c的立体化学非刚性。在各种溶剂中计算出用于锗原子构型反转的活化参数。基于¹ H DNMR数据和量子化学计算，讨论了排列异构化的可能机理。