**Contents**


## **Ibon Alkorta and Anthony C. Legon**

An Ab Initio Investigation of the Geometries and Binding Strengths of Tetrel-, Pnictogen-, and Chalcogen-Bonded Complexes of CO2, N2O, and CS2 with Simple Lewis Bases: Some Generalizations Reprinted from: *Molecules* **2018**, *23*, 2250, doi:10.3390/molecules23092250 .............. **161 Wenbo Dong, Qingzhong Li and Steve Scheiner** Comparative Strengths of Tetrel, Pnicogen, Chalcogen, and Halogen Bonds and Contributing Factors Reprinted from: *Molecules* **2018**, *23*, 1681, doi:10.3390/molecules23071681 .............. **177 Janet E. Del Bene, Jos ´e Elguero and Ibon Alkorta** Complexes of CO2 with the Azoles: Tetrel Bonds, Hydrogen Bonds and Other Secondary Interactions Reprinted from: *Molecules* **2018**, *23*, 906, doi:10.3390/molecules23040906 .............. **195 Wiktor Zierkiewicz, Mariusz Michalczyk and Steve Scheiner** Comparison between Tetrel Bonded Complexes Stabilized by σ and π Hole Interactions Reprinted from: *Molecules* **2018**, *23*, 1416, doi:10.3390/molecules23061416 .............. **209 Sławomir J. Grabowski** Tetrel Bonds with π-Electrons Acting as Lewis Bases—Theoretical Results and Experimental Evidences Reprinted from: *Molecules* **2018**, *23*, 1183, doi:10.3390/molecules23051183 ............. **225**
