ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The space group and atom configuration of monoclinic Na2Ti9O19 have been studied by combining 1 MeV high-resolution electron microscope imaging with the convergent-beam electron diffraction (CBED) technique. The crystal has monoclinic symmetry with lattice parameters a = 12.2, b= 3.78, c = 15.6 Å and β= 105°. The space group was determined uniquely to be centrosymmetric C2/m by selecting the point group from the symmetry of the CBED pattern. On the basis of the 1 MeV structure-image observation reported previously and the space-group determination, the crystal structure of monoclinic Na2Ti9O19 is proposed and atom coordinates are given.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0567739482000473
