High Quality Content by WIKIPEDIA articles! The solid adopts the fluorite structure and at high pressure the PbCl2 structure.In the vapor phase the BaF2 molecule is non-linear with an F-Ba-F angle of approximately 108°. This is an exception to VSEPR theory which would predict a linear structure. Ab initio calculations have been cited to propose that contributions from d orbitals in the shell below the valence shell are responsible. Another proposal is that polarisation of the electron core of the barium atom creates an approximately tetrahedral distribution of charge that interacts with the Ba-F bonds.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.