TY - JOUR
T1 - An electron diffraction and XRPD study of superlattice ordering in the elpasolite-related oxyfluoride K3MoO3F3
AU - Brink, F. J.
AU - Withers, R. L.
AU - Friese, K.
AU - Madariaga, G.
AU - Norén, L.
PY - 2002
Y1 - 2002
N2 - A detailed electron diffraction and XRPD study has been made of the room-temperature α polymorph of K3MoO3F3. It is shown that the true symmetry of this polymorph is neither tetragonal, trigonal, nor triclinic as previously reported but rather monoclinic I1a1, a = 2ap - cp, b = 4bp, c = ap + 2cp when expressed in terms of the underlying elpasolite (ordered perovskite) parent structure type. A highly structured, three-dimensional, continuous diffuse intensity distribution (presumably arising from local O/F ordering and associated structural relaxation) is shown to coexist with the sharp satellite reflections characteristic of the monoclinic supercell.
AB - A detailed electron diffraction and XRPD study has been made of the room-temperature α polymorph of K3MoO3F3. It is shown that the true symmetry of this polymorph is neither tetragonal, trigonal, nor triclinic as previously reported but rather monoclinic I1a1, a = 2ap - cp, b = 4bp, c = ap + 2cp when expressed in terms of the underlying elpasolite (ordered perovskite) parent structure type. A highly structured, three-dimensional, continuous diffuse intensity distribution (presumably arising from local O/F ordering and associated structural relaxation) is shown to coexist with the sharp satellite reflections characteristic of the monoclinic supercell.
UR - http://www.scopus.com/inward/record.url?scp=0036322878&partnerID=8YFLogxK
U2 - 10.1006/jssc.2001.9406
DO - 10.1006/jssc.2001.9406
M3 - Article
SN - 0022-4596
VL - 163
SP - 267
EP - 274
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
IS - 1
ER -