ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Das bei Zimmertemperatur unbeständige Niobperoxidhydrat Nb2O7 · 4 H2O mit Nb:O22- = 1:1 wird dargestellt. Aus DTA-Versuchen und dem IR-Spektrum wird durch Vergleich mit Nioboxidhydrat auf einen polymeren Aufbau mit koordinierten Peroxid-(NbO2-Dreiring), H2O- und OH-Gruppen geschlossen.
Notes:
Hydrated niobium peroxide, Nb2O7 · 4 H2O having niobium: peroxy oxygen as 1:1, is prepared. The peroxy oxygen is lost at room temperature slowly and continuously. The differential thermal analysis gives an exothermic peak at 190°C due to the disruption of the peroxy group. The infrared spectrum of the peroxide indicates polymeric nature of niobium peroxide and coordinated peroxide, water and hydroxyl groups. A triangular ring structure is suggested for the peroxy niobium group. Niobium hydroxide has also been studied under similar conditions to serve as a reference.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19673530114
