ABSTRACT
Binuclear Mn[II], Co[II], Ni[II] and Cu[II] complexes of some hydrazone derivatives were synthesized and characterized by elemental analysis, conductance measurements and IR spectra. The hydrazones behaved as monoanionic bidentate ligands. Electronic spectra and magnetic susceptibility measurements of the solid complexes indicated tetrahedral geometry around Co[II] and Mn[II] ions, octahedral geometry around Ni[II] and square planar the Cu[II] ion
Subject(s)
Spectrophotometry, Infrared , Magnetics , Hydrazones/chemical synthesis , Manganese , Copper , Nickel , Chemistry Techniques, AnalyticalABSTRACT
The electronic absorption spectra of some new assyrnmetrical Schiff bases derived from 7-formyl-8-hydroxyquinoline[FHQ] with different diamines and beta-diketones are investigated in organic solvents of varying polarities. The important bands in the IR spectra of the compounds as well as the main signals of the [1]H NMR spectra are discussed in relation to molecular structure. Mass spectra and the mechanism leading to different fragment ions of the compounds are also discussed
Subject(s)
Oxyquinoline , Diamines , Spectrum AnalysisABSTRACT
The electronic absorption spectra of some new azino compounds derived from hydrazine and different aldehyde and ketones are investigated in organic solvents of varying polarities. The important bands in the IR spectra and the main 1H NMR signals are assigned and discussed in relation to molecular structure. Although work on the absorption spectra of azino compounds has been reported in the literature [1-3], a series of new azino compounds derived from hydrazine and different aldehyde and ketones was prepared and in order to throw more light on their structures, these compounds were subjected to elemental analysis, spectroscopic studies and Uv-visible spectral behavior in organic solvents of varied polarity. The study included also the assignment of IR bands and 1H NMR signals by considering the effect of molecular structure on the spectral behavior