Low Temperature DTA and IR Studies of Barium Nitroprusside Trihydrate, Ba[Fe(CN)5NO].3H2O

M. J. ZURIAGA; G. A. MONTI; C. A. MARTIN; J. A. GÜIDA; O. E. PIRO; P. J. AYMONINO

JOURNAL OF THERMAL ANALYSIS

Wiley

Año: 1991 vol. 37 p. 1523 - 1531

0368-4466

Recently, the existence of a phase transition has been reported in Ref. 1 for BaNP, and several studies have been conducted towards the under-standing of its crystal structures [2-6]. In this work careful DTA and IR measurements have been carried out to determine the existence and nature of phase transitions in the range 90 K up to room temperature. Interestingly enough, BaNP shows a rich DTA behaviour, as well as Sr[Fe(CN)sNO] "4HzO (SrNP), while the DTA curve of Naz[Fe(CN)sNO].2H20 is smooth and shows no inflexion points [7, 8]. The transition temperatures and the relative enthalpies associated are reported.