Original scientific paper

Characterization of Isothiocyanato Niobates(V) Isolated from Solutions for the Spectrophotometric Determination of Niobium

B. Tamhina ; Laboratory of Analytical Chemistry, Faculty of Science, University of Zagreb, 41000 Zagreb, Croatia, Yugoslavia
C. Djordjević ; aboratory of Analytical Chemistry, Faculty of Science, University of Zagreb, 41000 Zagreb, Croatia, Yugoslavia

Abstract

From aqueous solutions containing niobium(V), sulphuric acid
and an excess of thiocyanate, under the conditions for the spectrophotometricdetermination of niobium, the compounds [(C6H5)4P]2
[NbO(NCS)s], [(C6Hs)4As]2 [NbO(NCS)s] and [(C2Hs)4N]2 [NbO(NCS)5)
were isolated either by crystallization or by extraction with diethyl
ether and evaporation o·f the extracts. (C2H2N2S3)2H[Nb(NCS)a] was
isolated from an ether extract only. The compounds have been
characterised by analytical data, .infrared spectra, magnetic and
conductivti.ty measurements. In all the compounds the thiocyanate
groups bond through the nitrogen atom.

Keywords

Hrčak ID:

196651

URI

https://hrcak.srce.hr/196651

Publication date:

15.10.1975.

Visits: 755 *