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Crystallographic data for KNO 2 III at −35 °C and KNO 2 VII at −100°C
Author(s) -
Pistorius Carl W. F. T.,
Richter P. W.
Publication year - 1972
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19723890312
Subject(s) - monoclinic crystal system , crystallography , group (periodic table) , phase (matter) , chemistry , crystal structure , materials science , organic chemistry
KNO 2 III below −13°C is monoclinic, space group P2 1 or P2 1 /m, with a 0 , b 0 , c 0 = 4.677, 9.650, 6.395 Å, β = 93.8° at −35°C. There is a further phase transformation between −35°C and −100°C to a new phase KNO 2 VII, which is also monoclinic, space group P2 1 or P2 1 /m: with a 0 , b 0 , c 0 = 8.397, 4.773, 7.644 Å, β = 112° at −100°C. Both these phases appear to be ordered.