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- W4242014023 abstract "Abstract Some new substituted cyclotriphosphazenes were prepared by the reaction of hexachlorocy-clotriphophazene and 4-hydroxy or 4′-hydroxy Schiff bases as 4′-hydroxybenzylideneaniline, 4′-hydroxy-4-chlorobenzylideneaniline, 4′-hydroxy-2-chlorobenzylidenaniline, 4′-hydroxyfurfurylidenaniline, 4-hydroxybenzylidene-2′-methylaniline, 4-hydroxybenzylidene-2′,6′-dimethylaniline, 4-hydroxybenzylidene-2′-chloroaniline, 4-hydroxybenzylidene-4′-tert-butylaniline, 4′-hydroxybenzylidene-3,4–15-Crown-5-aniline. The structure of compounds with a general formula [NP(OC6H4CH=N-Ar)2]3 or [NP(OC6H4N=CH-Ar)2]3, was determined by IR, UV, 1H-NMR and elemental analysis. IR spectra of all compounds showed four characteristic bands located at 1633–1601 cm−1, 1242–1150 cm−1, 1278–1261 cm−1 and 958–943 cm−1, respectively, corresponding to CH=N, P=N, P-N-P (asymmetric) and P-N-P (symmetric) vibrations. Charasterictic UV bands, named as Band 1. Band II, Band III and Band IV located at 346–308 nm, 294–271 nm, 262–216 nm and 240–210 nm respectively, are due to electronic transitions. The 1H-NMR spectra of 4-hydroxyfurfurylidene and the phosphazene derivative shows cis-trans izomerization below 305°K and 295°K." @default.
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- W4242014023 date "1999-09-01" @default.
- W4242014023 modified "2023-10-16" @default.
- W4242014023 title "PREPARATION AND CHARACTERIZATION OF CHROMOPHOR GROUP CONTAINING CYCLOTRIPHOSPHAZENES: I IMINO CHROMOPHOR CARRYING SOME CYCLOTRIPHOSPHAZENES" @default.
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- W4242014023 doi "https://doi.org/10.1080/10426509908031613" @default.
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