▎ 摘　　要

Based on a previously proposed model of the electronic spectrum of binary A (N) B8-N graphene-like compounds (GLC), adsorption theory is constructed, which allows determination of the role of the adatom level position, the adatom-substrate coupling constant, and the gap inherent to GLC in the free state with heteropolar bonds in the formation of the adatom electronic structure. The cases of free-standing and epitaxial GLCs on a metal surface are considered. In the case of free-standing GLCs, analysis shows local states mainly contribute to the adatom occupation number n (a) at large and intermediate adatom-GLC coupling constants; as the coupling constants decrease, the contribution of the GLC valence band increases. The main feature of an epitaxial GLC on metal is the absence of a gap, hence, the contribution of adatom local states to n (a) . Estimations show that changes in the adatom-substrate and GLC-metal coupling constants affect n (a) in almost the same way. In this case, the dependence of n (a) on the GLC gap is not critical from the qualitative viewpoint. Adsorption on the GLC-semiconductor structure is briefly discussed.