An ab initio calculation has been performed for the complexes of F₂CCFTF₃ (TC, Si, and Ge) with three Lewis bases including H₂CO, H₂O, and NH₃. Most complexes are stabilized by tetrel bonds together with weak hydrogen bonds. The Lewis bases can be introduced to the σ-hole and π-hole of F₂CCFTF₃, but the σ-hole bonded complexes are preferential for F₂CCFTF₃ (TSi and Ge), while the π-hole bonded complexes are favorable for F₂CCFCF₃. Hybridization of the carbon atom adjoined with the SiF₃ group strengthens the σ-hole tetrel bond in the order sp³ < sp² < sp, similar to hydrogen and halogen bonds. The strength of σ-hole tetrel bond is also dependent on the number, position, and conformation of substituents. In addition, solvents have a prominent enhancing effect on the strength of σ-hole tetrel bond with about 0.1 Å shortening of the Si⋯N distance in water.

已经对F ₂ C CFTF ₃（TC ，Si和Ge）与三个路易斯碱（包括H ₂ CO，H ₂ O和NH ₃）的配合物进行了从头计算。多数配合物都由锡特尔键和弱氢键稳定。可以将Lewis碱引入F ₂ C CFTF ₃的σ孔和π孔中，但σ孔键合的络合物优先于F ₂ C CFTF ₃（T Si和Ge），而π孔键合络合物对F ₂ C CFCF ₃有利。与SiF ₃基团相邻的碳原子的杂化以sp ³  <sp ²  <sp的顺序增强了σ-孔t形键，类似于氢键和卤素键。σ-孔t形键的强度还取决于取代基的数量，位置和构象。此外，溶剂对σ-孔t固键的强度具有显着的增强作用，使水中的Si⋯N距离缩短约0.1Å。