Silver(I) Complex Assemblies with Nonplanar Aromatic Compounds

Abstract

Reactions of silver(I) perchlorate with the nonplanar aromatic compounds triptycene (L1), 9,9-bifluorenylidene (L2), (R)-(+)-1,1‘-bi-2-naphthol (L3), and 2,5-norbornadiene (L4) have isolated four novel hydrocarbon-bridged polymeric complexes: [Ag3(L1)3(ClO4)3]·2C6H5Me (1), [Ag2(L2)2(ClO4)2]·C6H4Me2 (2), [Ag2(L3)(C6H6)2(ClO4)2] (3), and [Ag(L4)(ClO4)] (4). Structural studies using single-crystal X-ray diffraction have shown that all compounds contain extended two- or three-dimensional structures based on cation−π interactions. While complex 1 in the solid state contains a three-dimensional architecture in which the triangular molecule triptycene exhibits an unprecedented μ-η2-η2 or μ-η2-η2-η1 coordination mode depending on the steric requirements of the network, 3 represents the first example of π coordination of naphthol-containing micropores in its metal complexes. Infinite chains consisting of alternating silver ions and hydrocarbon molecules observed in both 2 and 4 are linked together by perchlorates...