Monoazo disperse dyes derived from 11H-7-amino-2-chloro-isoindolo[2,1-a] benzimidazole-11-one

Metal complexes of new pyrimidine azodye ligands synthesis, spectral studies, thermal analysis, X-ray diffraction and uses in ink synthesis.

“…The proposed molecular formula of these complexes was confirmed by the mass spectral analysis by comparing its molecular formula weight with m/e values .The molecular ion peaks of ligands and its binuclear Co (II) and Cu (II) complexes shows different m/e values with different intensities. The mass spectra contain molecular ion peaks at m/e (M + ) 450 (L 1 ) but the molecular ion peak of its copper complex did not observed due to its high molecular weight than the scale of the mass device and it gives base peak at m/e =149 for C 6 ,…… without observing its molecular ion peak due to its high molecular weight than the scale of the mass device. These data is in good agreement with the respective molecular formula.…”

“…Azo-compounds play an important role in analytical chemistry as metal chromogenic agents [1][2][3][4], in industrial dyes [5][6], acid-base indicators and histological stains [7]. Also some azo-compounds possess excellent optical memory and photoelectric properties [8][9].…”

11H-isoindolo[2,1-a]benzimidazoles (Review)

“…The bisproducts from the condensation of 3,3'-diaminobenzidine with phthalic anhydride [110] and of pyromellitic anhydride with ophenylenediamine [111] and bisproducts of type 37 (R = H [40] or R = NO 2 [41]) can be used as dyes (see section 1.2.1). An azo dye based on 11H-7-amino-2-chloroisoindolo[2,1-a]benzimidazol-11-one is known [112]. The synthesis of azo pigments containing the isoindolobenzimidazole system 4a has been described [113].…”

Synthesis and Characterization of Novel Cu(II) and Co(II) Azo Dye Complexes and Their Application on Nylon 6 and Wool

“…In continuation of our previous work (1) , using a divalent metal complexes o,o`-dihydroxyazo dyes and their divalent metal complexes used for obtaining dyeing properties of protein and polyamide fibres with excellent light and washing fastness and in elecrtophotography (2)(3)(4)(5) in industrial dyes (6) . Also, some azocompounds possess excellent optical memory and photoelectric properties (7) .…”