426 research outputs found
DERIVATOGRAPHIC STUDY OF THERMAL DECOl\'IPOSITION OF ELECTRICAL INSULATING MATERIALS AND INSULATORS
ON THE DIOXIMINE COMPLEXES OF TRANSITION METALS. PART XCIV. NEW RHODIUM(III) COMPLEXES WITH α-SUBSTITUTED ALIPHATIC AND ALICYCLIC OXIMES
Some chelating agents were obtained by condensation of the α-keto-oximes diacetyl-monoxime, methyl-isopropyl-2,3-dione-monoxime (2) and 1,2,3-cyclohexane trione dioxime (1,3) with semicarbazide and thiosemicarbazide. The formation of rhodium(III) chelates with these reagents was studied spectrophotometrically in a wide pH-range using
the continuous variation method. Some derivatives were proposed for the analytical determination of this metal
ÜBER DIOXIMINKOMPLEXE DER ÜBERGANGSMETALLE. LXXX. KATALYTISCHE POLAROGRAPHISCHE REDUKTION VON HYDROXYLAMIN IN ANWESENHEIT VON EISEN(II)-DIOXIMINKOMPLEXEN
The stability constants of the iron(II)-nyoximine chelates: Fe(Nyox. H)* and Fe(Nyox. H)2
in aqueous NaClO4 -Britton-Robinson buffer solutions have been determined polarographi-
cally. In the Fe(II)-nyoxime system appears a catalytic wave in the presence of hydroxylamine,
with a half wave potential of -0.90 V (vs. SCE), suitable for the quantitative polarographic
determination of hydroxylamine, also in the presence of hydrazine
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