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Synthesis and Molecular Structures of the Cationic Silver Complexes of the Polycondensed Aromatics Fluorene, Pseudorubrene, and Truxene
Author(s) -
Wombacher Tobias,
Foro Sabine,
Schneider Jörg J.
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201600901
Subject(s) - chemistry , fluorene , cationic polymerization , toluene , molecule , trifluoromethanesulfonate , polymer chemistry , crystal structure , ring (chemistry) , crystallography , organic chemistry , polymer , catalysis
We investigated the coordination behavior of Ag I towards three polycondensed aromatic hydrocarbons (PAHs) in solution, in the solid state, and theoretically. Silver(I) trifluoromethanesulfonate (AgTfl) coordinates to fluorene to yield crystals of the composition {[(µ‐η 2 :η 2 ‐fluorene)Ag 2 (Tfl) 2 ]} n ( 1 ), the fluorene derivative 5,12‐diphenyl‐5,6;11,12‐di‐ o ‐phenylene‐5,12‐dihydrotetracene (pseudorubrene) reacts with silver(I) perchlorate to yield crystals of the composition bis[(η 2 ‐pseudorubrene)(η 2 ‐toluene)AgClO 4 ] · toluene solv ( 2 ), and the formation of the crystalline dimeric Ag I sandwich compound [(µ‐η 2 :η 2 ‐truxene) 2 (η 1 ‐toluene)(µ‐H 2 O)Ag 2 (ClO 4 ) 2 ] ( 3 ) is accomplished by π‐coordination of the PAH truxene. In complexes 1 – 3 , it is eminent from their crystal structures that the anionic silver moieties act as linking units between the PAH molecules. Theoretical calculations based on DFT methods of the aromatic bridging ring ligands substantiate the experimentally observed selective Ag I coordination for each of the three PAH molecules fluorene, pseudorubrene, and truxene.