Construction of 2-D multilayer strucures: silver(I)complexes with linear aromatic compounds

摘要

For the purpose of exploring the structural relations of organometallic compounds to their organic components, a series of linear polycyclic aromatic hydrocarbons (PAHs) benzo[a]phenanthrene (L~1), dibenz[a,h]anthracene (L~2), benz[a]anthracene (L~3), and naphtho[2,3-a]pyrene (L~4), have been studied towards complexation with silver(I) ion. The crystal structures of [Ag_3(L~1)(ClO_4)_(H_2O)_2] 1, [Ag_2(L~2)(ClO_4)_2] 2, [Ag_2(L~3)(ClO_4)_2(H_2O)] 3, and [Ag_2(L~4)(CF_3SO_3)_2] 4 have been determined by single-crystal X-ray diffraction. Although each of these complexes exhibits distinct coo-ordination behavior and different frameworks, all of them retain or partially keep the herringbone-packing pattern of their metal-free aromatic ligands in the crystalline state, and display similar two-dimensional multilayer architectures on a given plane. The fundamentals of the synthesis, possible formation mechanism of these polymeric networks and some properties are discussed.