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- W2161305953 abstract "Cr(III)-tris[4-metoxyphenyl-O-alkyl] -dithiophosphonate compounds (alkyl (R) = methyl, ethyl, n-propyl, i-propyl) were prepared and investigated by UV-VIS, IR and EPR spectroscopies. The electronic spectra of these compounds show two bands at 13620–14000 cm -1 (ν 1 ) and 18310–18500 cm -1 (ν 2 ) assigned to 4 A 2g (F) → 4 T 2g (F) and 4 A 2g (F) → 4 T 1g (F) transitions. The valence vibrations of the PS 2 group confirm the anizobidentate coordination of dithiophosphonate anions. EPR spectra suggest the superposition of two signals, one with a resolved fine structure typical for isolated Cr(III) ions in a pseudo-octahedral geometry (monomeric species) and a broad band at g eff ≈ 2, characteristic of strong exchange coupled chromium ions (dimeric or polynuclear species). The number of monomeric species increases with the dimension of alkyl radicals because the distance between chromium ions also increases." @default.
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- W2161305953 date "2002-05-10" @default.
- W2161305953 modified "2023-09-27" @default.
- W2161305953 title "LOCAL STRUCTURE AND METAL–METAL INTERACTION IN SOME <font>Cr</font>(III)-DITHIOPHOSPHONATE COMPOUNDS" @default.
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- W2161305953 doi "https://doi.org/10.1142/s0217984902003774" @default.
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