1.
Angew Chem Int Ed Engl
; 58(13): 4164-4168, 2019 Mar 22.
Artigo
em Inglês
| MEDLINE
| ID: mdl-30667579
RESUMO
The complexes [Pt(tpp)] (H2 tpp=tetraphenylporphyrin), [M(acac)2 ] (M=Pd, Pt, Hacac=acetylacetone), and [Pd(ba)2 ] (Hba=benzoylacetone) were co-crystallized with highly electron-deficient arene systems to form reverse arene sandwich structures built by π-holeâ â â [MII ] (d8 M=Pt, Pd) interactions. The adduct [Pt(tpp)]â 2 C6 F6 is monomeric, whereas the diketonate 1:1 adducts form columnar infinity 1D-stack assembled by simultaneous action of both π-holeâ â â [MII ] and Câ â â F interactions. The reverse sandwiches are based on noncovalent interactions and calculated ESP distributions indicate that in π-holeâ â â [MII ] contacts, [MII ] plays the role of a nucleophile.