ON X-RAY SINGLE-CRYSTAL STUDIES OF NA2FEA LF7, (NA2MGAF7)-GA-II (MN =NI, ZN), AND NA2ZNFEF7 AND THE STRUCTURAL CHEMISTRY OF WEBERITES

Authors
DAHLKE P PESCHEL B BABEL D
Citation
P. Dahlke et al., ON X-RAY SINGLE-CRYSTAL STUDIES OF NA2FEA LF7, (NA2MGAF7)-GA-II (MN =NI, ZN), AND NA2ZNFEF7 AND THE STRUCTURAL CHEMISTRY OF WEBERITES, Zeitschrift fur anorganische und allgemeine Chemie, 624(6), 1998, pp. 1003-1010
Citations number
31
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur anorganische und allgemeine Chemie
ISSN journal
00442313 → ACNP
Volume
624
Issue
6
Year of publication
1998
Pages
1003 - 1010
Database
ISI
SICI code
0044-2313(1998)624:6<1003:OXSSON>2.0.ZU;2-T
Abstract
At single crystals of the orthorhombic weberite Na2NiGaF7 (a=716.1, b= 1021.6, c=740.9pm; Imma, Z=4) and of the monoclinic variants (C2/c, Z= 16) Na2FeAlF7 (a = 1242.6, b = 727.8, c = 2420.6 pm, beta= 99.99 degre es), Na2ZnGaF7 (a = 1251.9, b = 730.3, c = 2435.3 pm, beta= 99.74 degr ees) and Na2ZnFeF7 (a = 1261.0, b = 7.359, c = 2453.8 pm, beta= 99.70 degrees) complete X-ray structure determinations were performed. The r esults and the influence of radii on the bridge angles M-II-F-M-II and M-II-F-M-II are discussed in connection with general features within the structural chemistry of 28 weberites.