Novel CpAg(I)-Containing Organometallic Coordination Polymers Generated from Fulvene Ligands

Two new fulvene ligands, L1 and L2, have been synthesized by an aroylation reaction of
the cyclopentadienyl anion. The coordination chemistry of L1 and L2 was investigated. Two
novel CpAg(I)-containing polymeric compounds, 1 ([Ag4(L1)2(μ-H2O)2(SO3CF3)4]·(μ-bis-η1-C6H6))·H2O) and 2 ([Ag2(L2)(H2O)(SO3CF3)2]·0.5(C6H6)), have been synthesized. Compounds
1 and 2 have been fully characterized by infrared spectroscopy, elemental analysis, and
single-crystal X-ray diffraction. The solid state structure of 1 features a macro-ring-containing
one-dimensional chain motif. The solid state structure of 2 features a one-dimensional double-chain motif. These double chains are further cross-linked to each other via CpAg(SO3CF3)2AgCp (Ag···Ag contact of 4.215(15) Å) linkage into a novel 2-D network with large cavities
(effective cross-section of ca. 21 × 9 Å), in which the benzene guest molecules are located.