Anion dependent mesomorphism in coordination networks based on 2,2'-bipyridine silver(I) complexes.
The reaction of the promesogenic dihexadecyl-2,2'-bipyridine-4,4'-dicarboxylate (L16) with a number of AgX salts produces a series of silver(I) complexes [(L16)Ag(sac)], 1, [(L16)Ag(NO3)], 2, [(L16)Ag(OTf)], 3, and [(L16)3Ag2](ClO4)2, 4, whose stoichiometries, molecular architectures, supramolecular networks and mesomorphic behaviour are "anion dependent". In spite of the large differences in the single molecular structure, the one-dimensional coordination networks involving the triflate and perchlorate in complexes 3 and 4, are the key element for inducing significant argentophilic intermolecular interactions responsible for the induction of lamello-columnar mesomorphism in both Ag(I) derivatives. Moreover, a series of Ag(I) triflate model complexes have been synthesized and in order to get more insights about their solid state architectures, systematic structural studies have been performed.
Bellusci
Anna
A
Centro di Eccellenza CEMIF.CAL-LASCAMM, CR-INSTM Unità della Calabria, Dipartimento di Chimica, Università della Calabria, Via P. Bucci Cubo 14C, Italy.
Ghedini
Mauro
M
Giorgini
Loris
L
Gozzo
Fabia
F
Szerb
Elisabeta I
EI
Crispini
Alessandra
A
Pucci
Daniela
D
D000838:Anions / Q000737:chemistry; D002942:Circular Dichroism; D018360:Crystallography, X-Ray; D008968:Molecular Conformation; D011725:Pyridines / Q000138:chemical synthesis / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*
D000838:Anions; D011725:Pyridines; D012834:Silver