Nature and strength of group-14 A–A′ bonds
Daniela Rodrigues Silva, Eva Blokker, Martijn van der Schuur, Trevor A. Hamlin, F. Matthias Bickelhaupt
Abstract
bond begins to weaken. Our bonding analyses show how different behavior upon increasing the steric bulk of the substituents stems from the interplay of (Pauli) repulsive and (dispersion) attractive steric mechanisms. Extension of our analyses to other model systems shows that C-Si bonds display behavior that is in between that of C-C and Si-Si bonds. Further increasing the size of the group-14 atoms from C-C and Si-Si to Ge-Ge, Sn-Sn and Pb-Pb leads to a further decrease in the sensitivity of the bond strength with respect to the substituents' bulkiness. Our findings can be used as design principles for tuning A-A and A-A' bond strengths.
Topics & Concepts
Group (periodic table)BondChemistryBusinessOrganic chemistryFinanceCrystallography and molecular interactionsCrystal structures of chemical compoundsSupramolecular Chemistry and Complexes