MANGANESE(II) HEXAFLUOROARSENATE - UNUSUALLY HIGH COORDINATION OF MANGANESE(II) IN A FLUORINE ENVIRONMENT

Authors
BORRMANN H LUTAR K ZEMVA B
Citation
H. Borrmann et al., MANGANESE(II) HEXAFLUOROARSENATE - UNUSUALLY HIGH COORDINATION OF MANGANESE(II) IN A FLUORINE ENVIRONMENT, Inorganic chemistry, 36(5), 1997, pp. 880-882
Citations number
11
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Inorganic chemistry → ACNP
ISSN journal
00201669
Volume
36
Issue
5
Year of publication
1997
Pages
880 - 882
Database
ISI
SICI code
0020-1669(1997)36:5<880:MH-UHC>2.0.ZU;2-Z
Abstract
Mn(AsF6)(2) was prepared from MnF2 and AsF5 in anhydrous hydrogen fluo ride (aHF), and single crystals were grown from the respective solutio n. The compound crystallizes in the tetragonal space group <I(4)over b ar 2d> with a = 750.76(2) pm, c = 1544.44(5) pm, and Z = 4 at 293 K. D ue to combined sharing of edges and apexes with AsF6 octahedra, coordi nation number 8 (Mn-F4 x 213.0(2) pm and 4 x 241.9(3) pm) is observed for the first time with Mn(II) and fluorine ligands. A second crystall ine modification is formed at about 243 K. From susceptibility measure ments a magnetic moment of 5.42 mu(B) is derived, but no magnetic orde ring is observed above 4 K.