title: Direct Methods Optimised for Solving Crystal Structure by Powder Diffraction Data: Limits, Strategies, and Prospects.
abstract: The ab-initio crystal structure solution by powder diffraction data requires great efforts because of the collapse of the experimental information onto the one dimensional 2θ axis of the pattern. Different strategies will be described aiming at improving the process of extraction of the integrated intensities from the experimental pattern in order to make more straightforward the structure solution process by direct methods. Particular attention will be devoted to the EXPO program. Some of its performance will be analysed and results will be shown.
authors.affiliation: IC-CNR c/o Dipartimento Geomineralogico, Università di Bari, Campus Universitario, Via Orabona 4, 70125 Bari, Italy.
authors.forename: Angela
authors.initials: A
authors.lastname: Altomare
authors.affiliation: IC-CNR c/o Dipartimento Geomineralogico, Università di Bari, Campus Universitario, Via Orabona 4, 70125 Bari, Italy.
authors.forename: Carmelo
authors.initials: C
authors.lastname: Giacovazzo
authors.affiliation: IC-CNR c/o Dipartimento Geomineralogico, Università di Bari, Campus Universitario, Via Orabona 4, 70125 Bari, Italy.
authors.forename: Anna Grazia Giuseppina
authors.initials: AGG
authors.lastname: Moliterni
authors.affiliation: IC-CNR c/o Dipartimento Geomineralogico, Università di Bari, Campus Universitario, Via Orabona 4, 70125 Bari, Italy.
authors.forename: Rosanna
authors.initials: R
authors.lastname: Rizzi
keywords: direct methods; intensity extraction; structure solution by powder data