Silver(I) complexation of (poly)aromatic ligands. Structural criteria for depth penetration into cis-stilbenoid cavities.

摘要: Silver(I) complexes with aromatic donors are thoroughly analyzed (with aid of the Cambridge Crystallographic Database) to identify basic structural factors inherent bonding an arene ligand. Most strikingly, distance parameter d (which simply measures normal separation Ag from mean plane) is singularly invariant at = 2.41 +/- 0.05 A for all silver/arene complexes, independent hapticity (eta 1 or eta 2), hybridization, multiple coordination. As such, a systematic series stilbenoid ligands has been successfully designed precisely modulate penetration silver(I) into ligand cleft, and multicentered poly(arene) (X) form one-dimensional assembly Ag/arene units. Simply stated, depth cavities various cis-stilbenoid can be predicted single gamma that two cofacial aryl groups comprising cleft. This simple geometric consideration must taken account in any successful design novel (poly)aromatic complexation constitute new molecular architectures.