TY - JOUR
T1 - Synthesis, X-ray structure and reactivity of a sterically protected azobisphenol ligand: On the quest for new multifunctional active ligands
AU - Evangelio, Emi
AU - Saiz-Poseu, Javier
AU - Maspoch, Daniel
AU - Wurst, Klaus
AU - Busque, Felix
AU - Ruiz-Molina, Daniel
PY - 2008/1/1
Y1 - 2008/1/1
N2 - Different synthetic routes have been explored for the synthesis of the sterically protected 2,2′-dihydroxy-4,3,4,3′-tetra-tert- butylazobenzene ligand (2), which is an excellent candidate for the development of valence tautomeric complexes. As expected, such a ligand exhibits good reactivity with transition-metal ions, as shown by the synthesis and characterization of the new cobalt complex [Co(22-)(H 2O)3]Cl· 2.5EtOH·H2O (8). This fact together with the reversible deprotonation/ protonation of the phenol groups has been used to create a chromophoric array of three states with significantly different colours, which can interconvert reversibly between them. © Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
AB - Different synthetic routes have been explored for the synthesis of the sterically protected 2,2′-dihydroxy-4,3,4,3′-tetra-tert- butylazobenzene ligand (2), which is an excellent candidate for the development of valence tautomeric complexes. As expected, such a ligand exhibits good reactivity with transition-metal ions, as shown by the synthesis and characterization of the new cobalt complex [Co(22-)(H 2O)3]Cl· 2.5EtOH·H2O (8). This fact together with the reversible deprotonation/ protonation of the phenol groups has been used to create a chromophoric array of three states with significantly different colours, which can interconvert reversibly between them. © Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
KW - Acid-base behaviour
KW - Azobisphenol ligand
KW - Chromophores
KW - Multifunctional ligands
KW - Valence tautomerism
U2 - 10.1002/ejic.200701339
DO - 10.1002/ejic.200701339
M3 - Article
SN - 1434-1948
SP - 2278
EP - 2285
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 14
ER -