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Synthesis and Crystal Structure of Ba 4 Mo 2 O 5 F 7 (HF 2 ) 3 · H 2 O
Author(s) -
Fourquet J. L.,
Duroy H.,
CrosnierLopez M. P.
Publication year - 1997
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.19976230170
Subject(s) - octahedron , crystallography , crystal structure , trigonal crystal system , hydrothermal circulation , x ray crystallography , materials science , hydrothermal synthesis , group (periodic table) , space group , diffraction , chemistry , physics , geology , organic chemistry , seismology , optics
Single crystals of Ba 4 Mo 2 O 5 F 7 (HF 2 ) 3 · H 2 O are grown by hydrothermal synthesis. The structure is determined from X‐Ray diffraction data: space group Pnnm, Z = 4, a = 16.497(1) Å, b = 8.6939(5) Å, c = 11.5174(6) Å (R = 0.0295, R w = 0.0354 for 2425 independent reflections and 126 adjustable parameters). Mo atoms are in a distorted octahedral environment MoO 3 F 3 ; two octahedra are linked by one O 2− corner forming (Mo 2 O 5 F 6 ) 4− units lying along the c axis. Ba atoms present two kinds of environment: a quasi tricapped cube for Ba1 and Ba3 and a tricapped tricapped trigonal prism for Ba2.