Solid State Photolysis of Triazene 1-Oxides with Naphthols. Synthesis of Azo Dyes
作者:Shaaban K. Mohamed、A. M. Nour El-Din
DOI:10.1039/a900028c
日期:——
Sunlight irradiation of solid mixed crystals of the photolabile triazene 1-oxides and α- or β-naphthol afford azo dyes.
光不稳定的三氮烯1-氧化物和α-或β-萘酚的固态混合晶体的日光照射提供了偶氮染料。
Redox and UV/VIS/NIR spectroscopic properties of tris(pyrazolyl)borato–oxo–molybdenum(V) complexes with naphtholate and related co-ligands
作者:Andrew M. McDonagh、Michael D. Ward、Jon A. McCleverty
DOI:10.1039/b104575j
日期:——
A series of complexes has been prepared in which (Tp*)MoV(O)Cl}+ termini [Tp*
 = tris(3,5-dimethylpyrazolyl)hydroborate] have been coordinated with ligands containing naphtholate binding sites. Mononuclear complexes, in which the sixth ligand is e.g. 1-naphtholate or 2-naphtholate, have been prepared; in addition some dinuclear complexes
were also prepared based on bridging ligands containing either two naphtholate termini, or one naphtholate
terminus and one phenolate terminus. The complexes have been studied by electrochemistry and UV/VIS/NIR spectroelectrochemistry to evaluate how the naphtholate donors affect the properties of the complexes compared
to their known phenolate-based analogues. It was found that mononuclear complexes with phenolate, 1-naphtholate and 2-naphtholate ligands give significantly different electronic spectra in their oxidised [Mo(VI)] forms, with
the characteristic phenolate â Mo(VI) LMCT transition being at much lower energy for the naphtholate complexes
than the phenolate, an observation which is of significance for development of electrochromic near-IR
dyes. In addition, the twist induced in some of the bridging ligands by the bulky naphtholate termini results in substantially decreased metalâmetal electronic interactions compared to the equivalent phenolate-based complexes.