RT info:eu-repo/semantics/article
T1 Diphenylphosphinobenzoic  Acids as Linkers in [2,4,6– {(C10H21O)3C6H2NH}3C3N3] Triazine Adducts with Metal Complex, which Self–Organize into Room Temperature Hexagonal Columnar Mesophases
A1 Miguel Coello, Ana Beatriz
A1 Coco Cea, Silverio
A1 Donnio, Bertrand
A1 Heinrich, Benoît
A1 Espinet Rubio, Pablo
K1 Metallomesogens
AB Displacement of a labile ligand from appropriate precursor complexes by 2- or 4-PPh2C6H4COOH yields neutral gold(I) and gold(III) [AuXn(PPh2C6H4COOH)] (n = 1, X = Cl; n = 3, X = C6F5), cationic gold(I) [Au(PPh2C6H4COOH)2](CF3SO3), and neutral chromium(0) [Cr(CO)5(PPh2C6H4COOH)] metallo-organic acids. [AuCl(4-PPh2C6H4COOH)], [Au(C6F5)3(4-PPh2C6H4COOH)], and [Cr(CO)5(2-PPh2C6H4COOH)] have dimeric structures with typical carboxylic H-bond bridges, whereas [Au(C6F5)3(2-PPh2C6H4COOH)] gives a monomeric species with the carboxylic acid H bonded to cocrystallized solvent molecules. All gold-containing acids are emissive at 77 K in the range 404-520 nm and some of them also at 298 K with emission maxima from 441 to 485 nm. Reaction of these acid metal complexes with the triazine mesogen 2,4,6-{(C10H21O)3C6H2NH}3C3N3 affords some new hydrogen-bonded gold(I) and chromium(0) supramolecular adducts, but the related gold(III) complexes do not form adducts. The 4-diphenylphosphinobenzoic adducts display a columnar hexagonal mesophase (Colhex) at room temperature, with a random one-dimensional stacking of the pseudo-discoid triazine-metallo-organic adducts into columns, where the metallo-phosphinoacid fragments act as the fourth branch of the trifold triazine core. The 2-diphenylphosphinobenzoic mixtures do not display mesophases, as they appear in the X-ray studies as mixtures of the triazine and the metallo-phosphinoacid complex. The aggregates are luminescent at 77 K, with emission maxima in the range 419-455 nm.
PB American Chemical Society
SN 0020-1669
YR 2014
FD 2014
LK http://uvadoc.uva.es/handle/10324/21806
UL http://uvadoc.uva.es/handle/10324/21806
LA eng
NO Inorganic Chemistry, 2014, 53 (20), p. 10893–10902
NO Producción Científica
DS UVaDOC
RD 24-nov-2024