RT info:eu-repo/semantics/article
T1 Isocyano-triphenylene complexes of gold, copper, silver and platinum. Coordination features and mesomorphic behavior
A1 Chico Robles, Rubén
A1 Domínguez, Cristina
A1 Donnio, Bertrand
A1 Heinrich, Benoît
A1 Coco Cea, Silverio
K1 Chemistry
AB Stable organometallic complexes [AuX(CN-TriPh)] [X = Cl, C6F5, C6F4O-C10H21), C6F4O- (R)-2-octyl)], [(-4,4’-C6F4C6F4){Au(CN-TriPh)}2], [AuX(CN-TriPh)], [CuCl(CN-TriPh)], trans-[PtI2(CN-TriPh)2] and [Ag(CN-TriPh)2]BF4, bearing the previously unreported triphenylene-isocyanide ligand 1-isocyano-2,3,6,7,10,11-hexadodecyloxytriphenylene (CNTriPh), have been synthesized. The coordination features of the metal ion determine their thermal behavior. The free isocyanide ligand and all of the monomeric gold derivatives display enantiotropic mesomorphic behavior over a wide range of temperature (from 5 to 220 ºC), while the copper complex, with the same stoichiometry but not isostructural with the gold complexes, melts directly to an isotropic liquid. The bis-isocyanide platinum and silver complexes also melt directly to an isotropic liquid at low temperatures. In this case, the two trans coordinatedisocyanide ligands, connected by a too short linker, cannot become coplanar, which prevents the formation of a mesogenic structure. On the contrary, in the dinuclear gold complex the two isocyanide trans ligands are, due to the long Au-C6F4-C6F4-Au bridge, sufficiently separated to become coplanar and this complex gives rise to a mesophase. The structures of the mesophases were determined by small-angle X-ray scattering. All materials prepared show a fluorescent emission centered on the triphenylene core
PB American Chemical Society
YR 2016
FD 2016
LK http://uvadoc.uva.es/handle/10324/21764
UL http://uvadoc.uva.es/handle/10324/21764
LA eng
NO Crystal Growth and Design, 2016, 16 (12), p. 6984–6991
NO Producción Científica
DS UVaDOC
RD 22-nov-2024