The Commission on XAFS was established at the Seattle General Assembly in 1996.

In the following by XAFS is meant the fine structure associated with the inner shell excitation (both near edge and extended) by various probes (e.g., absorption or scattering of X-ray, electrons), and related techniques for which the data is interpreted on the same physical basis.

The Commission on Synchrotron Radiation was formally established at the Bordeaux General Assembly in 1990.

Introduction

The IUCr Commission on Structural Chemistry (IUCr CSC) is one of several International Union of Crystallography Commissions and is responsible for supporting activities relating to chemical crystallography. This page reports on those activities and provides historical and background information.

Created by J. Flippen-Anderson, Modified November 2005 by A. Bacchi, Last updated March 2011

The Commission represent the interests of the worldwide Small-Angle Scattering community, and collaborates closely with national small-angle scattering interest groups.

General Information

This Commission of the International Union of Crystallography focuses on experimental and theoretical work on charge, spin and momentum densities, and was originally known as the Commission on Charge, Spin and Momentum Densities. The current name was adopted in 2017 at the 24th General Assembly of the IUCr in Hyderabad. The aim is to combine experimental techniques, theory and computations to come to a coherent understanding of electronic charge, spin and momentum densities in atoms, molecules and condensed matter.

The Commission on Powder Diffraction (CPD) was formed in 1987 and had its first meeting as a satellite to the main IUCr congress in Perth, Australia in that year.

The Commission on NMR Crystallography and Related Methods was established at the Montreal General Assembly in August 2014.

The Commission on Neutron Diffraction was established at the 7th General Assembly in Moscow, in 1966. The proposal at that time is given below.

The Commission on Neutron Diffraction shall be concerned with those aspects of crystallography which can be studied almost uniquely by using neutron beams.

The name was changed to Commission on Neutron Scattering by the General Assembly at the Beijing meeting in 1993. The Commission requested the change in name because it wished to represent and serve all neutron scatterers who consider that they use crystallographic techniques.

The Commission on Mathematical and Theoretical Crystallography (MaThCryst) has a dedicated website at www.crystallography.fr/mathcryst/.

The IUCr-MaThCryst commission was started on September 2002 as an informal workgroup from a nucleus of researchers who felt the necessity of trying to reverse the current trend towards "crystallography as a black-box tool".