Toward EXPO: From the powder pattern to the crystal structure

被引:6
作者
Altomare, A
Burla, MC
Camalli, M
Carrozzini, B
Cascarano, G
Giacovazzo, C
Guagliardi, A
Moliterni, AGG
Polidori, G
Rizzi, R
机构
[1] CNR, Dipartimento Geomineral, Ist Ricerca Sviluppo Metodol Cristallograf, I-70125 Bari, Italy
[2] Univ Perugia, Dipartimento Sci Terra, I-06100 Perugia, Italy
[3] CNR, Ist Strutturist Chim G Giacomello, Rome, Italy
来源
EPDIC 5, PTS 1 AND 2 | 1998年 / 278-2卷
关键词
powders; pattern decomposition; direct methods;
D O I
10.4028/www.scientific.net/MSF.278-281.284
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Recently devised techniques for powder pattern decomposition will be discussed: they exploit the supplementary information available during the phasing process, so improving by far the pattern decomposition and the crystal structure solution process. A new package, EXPO, integrates EXTRA [1], a Le Bail-based [2] full pattern decomposition program, with a new version of SIRPOW.92 [3], a direct methods package optimized for powder data. Different ways of combining various kinds of structural information will be discussed and some applications to test structures will be presented.
引用
收藏
页码:284 / 288
页数:5
相关论文
共 10 条
  • [1] EARLY FINDING OF PREFERRED ORIENTATION - A NEW METHOD
    ALTOMARE, A
    CASCARANO, G
    GIACOVAZZO, C
    GUAGLIARDI, A
    [J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1994, 27 : 1045 - 1050
  • [2] SIR92 - a program for automatic solution of crystal structures by direct methods
    ALTOMARE, A
    CASCARANO, G
    GIACOVAZZO, G
    GUAGLIARDI, A
    BURLA, MC
    POLIDORI, G
    CAMALLI, M
    [J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1994, 27 : 435 - 435
  • [3] EXTRA: A program for extracting structure factor amplitudes from powder diffraction data.
    Altomare, A
    Burla, MC
    Cascarano, G
    Giacovazzo, G
    Guagliardi, A
    Moliterni, AGG
    Polidori, G
    [J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1995, 28 : 842 - 846
  • [4] Solving crystal structures from powder data .2. Pseudotranslational symmetry and powder-pattern decomposition
    Altomare, A
    Foadi, J
    Giacovazzo, C
    Guagliardi, A
    Moliterni, AGG
    [J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1996, 29 (pt 6) : 674 - 681
  • [5] Solving crystal structures from powder data .1. The role of the prior information in the two-stage method
    Altomare, A
    Carrozzini, B
    Giacovazzo, C
    Guagliardi, A
    Moliterni, AGG
    Rizzi, R
    [J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1996, 29 : 667 - 673
  • [6] ALTOMARE A, 1997, J APPL CRYSTALLOGR, V30, P341
  • [7] ALTOMARE A, 1996, J APPL CRYST, V29
  • [8] ALTOMARE A, 1997, P 5 EUR POWD DIFFR C
  • [9] Solving crystal structures from powder data .3. The use of the probability distributions for estimating the vertical bar F vertical bar's
    Carrozzini, B
    Giacovazzo, C
    Guagliardi, A
    Rizzi, R
    Burla, MC
    Polidori, G
    [J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1997, 30 : 92 - 97
  • [10] ABINITIO STRUCTURE DETERMINATION OF LISBWO6 BY X-RAY-POWDER DIFFRACTION
    LE BAIL, A
    DUROY, H
    FOURQUET, JL
    [J]. MATERIALS RESEARCH BULLETIN, 1988, 23 (03) : 447 - 452