Inorganic Chemistry, Vol.58, No.15, 9553-9556, 2019
Ba2M(C3N3O3)(2) (M = Sr, Pb): Band Engineering from p-pi Interaction via Homovalent Substitution in Metal Cyanurates Containing Planar pi-Conjugated Groups
The two new metal cyanurates Ba2M-(C3N3O3)(2) (M = Sr, Pb) were successfully grown by a solid-state cyclotrimerization reaction. The electronic energy bands of Ba2M(C3N3O3)(2) are totally divergent in spite of their same structures and similar interlayer distances. Theoretical calculations show the narrowing band gap of Ba2Pb(C3N3O3)(2) stems from the strong interaction between Pb 6p orbitals and anti-pi orbitals in (C3N3O3)(3- )groups.