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- W2069156727 abstract "The 1:1 molecular adducts derived from 2-aminobenzimidazole (ABZ) as a donor and either trinitrobenzene (TNB) or picric acid (PA) as an acceptor were synthesized. The spectroscopic studies of the two derivatives showed that ABZ–TNB (I) was a CT complex, while ABZ–PA (II) was an ion pair. The IR spectra of the complexes showed that the ν(CN) bands of donor moiety were shifted to higher frequencies while νasym(NO) bands of acceptors were shifted to lower wavenumbers. The UV–vis spectrum of ABZ–PA showed a visible band at 357 nm due to the picrate anion part of the molecule while the spectrum of ABZ–TNB exhibited a visible band due to charge transfer of π–π* type of interaction. The crystal structures of the two derivatives were determined by single-crystal X-ray diffraction. The ABZ–TNB complex crystallizes in a triclinic cell (space group P−1), while the ABZ–PA adduct crystallizes in a monoclinic cell (space group P21/c). The structures were determined by direct methods and refined to R=0.057 (I) and R=0.055 (II)." @default.
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- W2069156727 date "2003-01-01" @default.
- W2069156727 modified "2023-09-23" @default.
- W2069156727 title "Spectroscopic and X-ray crystal structure of 2-aminobenzimidazole-trinitrobenzene charge-transfer and 2-aminobenzimidazole-picric acid ion-pair derivatives" @default.
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- W2069156727 doi "https://doi.org/10.1016/s0022-2860(02)00474-x" @default.
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