Artículos de revistas
PENTACYANOFERRATES(II) ON THE SURFACE OF ORGANOMODIFIED SILICA-GEL - THE MATRIX EFFECT
Registro en:
Structural Chemistry. Plenum Publ Corp, v. 5, n. 2, n. 129, n. 133, 1994.
1040-0400
WOS:A1994NF84500008
Autor
RODRIGUES, UP
GUSHIKEM, Y
FUJIWARA, FY
STADLER, E
DRAGO, V
Institución
Resumen
Pentacyanoferrate(II) absorbed on a silica gel surface previously modified with 3-aminopropyl and 3-imidazolylpropyl groups were characterized by C-13 MAS/NMR, FT-IR, Mossbauer spectroscopy, and cyclic voltammetry. FT-IR and C-13 MAS/NMR data indicated that the pentacyanoferrate(II) complex is bonded to the surface by the nitrogen atom of the functional group. The differences in the isomeric shifts, the quandrupole splittings and the midpoint potentials of the adsorbed complexes in comparison with the model complexes were attributed to the matrix polar effect-i.e., the interaction of the complex with polar groups on the silica surface. 5 2 129 133
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