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Committee on Data (CommDat)

IUCr and Oxford University Press (OUP) Book Series Selection Committee

Gender Equity and Diversity Committee

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Committee on Electronic Publishing, Dissemination and Storage of Information

Diffraction Data Deposition Working Group (DDDWG)

Committee on Crystallographic Databases

IUCr Secretariat

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Principles and Policies

History Over 75 years of advancing structural science

Milestones in IUCr history

The Early History

Aspects of the history of the International Union of Crystallography

60 years of IUCr journals

Previous Executive Committees

Fifty Years of X-Ray Diffraction

Members Adhering bodies and Associates of the Union

Countries

Adhering bodies

Regional Associates

African Crystallographic Association (AfCA)

American Crystallographic Association (ACA)

Asian Crystallographic Association (AsCA)

European Crystallographic Association (ECA)

Latin-American Crystallographic Association (LACA)

Scientific associates

International Centre for Diffraction Data (ICDD)

International Organization for Crystal Growth (IOCG)

Worldwide Protein Data Bank (wwPDB)

Other bodies not belonging to the Union

Committee on Data of the International Council for Science

ISC Committee on Space Research

Interdivisional Committee on Terminology, Nomenclature and Symbols of the International Union of Pure and Applied Chemistry

International Council for Scientific and Technical Information

International Organization for Standards

International Science Council

Commissions Commissions make up the heart of the Union

Commission guidelines

Commission contact table

Commission on Aperiodic Crystals

Commission on Biological Macromolecules

Commission on Crystal Growth and Characterization of Materials

Commission on Crystallographic Computing

Commission on Crystallographic Nomenclature

Commission on Crystallographic Teaching

Commission on Crystallography in Art and Cultural Heritage

Commission on Crystallography of Materials

Commission on Diffraction Microstructure Imaging

Commission on Electron Crystallography

Commission on High Pressure

Commission on Inorganic and Mineral Structures

Commission on International Tables

Commission on Journals

Commission on Magnetic Structures

Commission on Mathematical and Theoretical Crystallography

Commission on XAFS

Commission on NMR Crystallography and Related Methods

Commission on Neutron Scattering

Commission on Powder Diffraction

Commission on Quantum Crystallography

Commission on Small-Angle Scattering

Commission on Structural Chemistry

Commission on Synchrotron and XFEL Radiation

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CheckCIF

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Bond valence parameters

Electron crystallography data sets

Standard Powder X-ray Diffraction Data Sets

Organic materials for organic structure solution from powder diffraction data

Meetings

CommDat

Public discussion forum

Crystallographic Information Fiesta

Workshop on Data Science Skills in Publishing: for authors, editors and referees

Workshop report

Workshop on MX raw image data formats, metadata and validation

Workshop report

Workshop on Raw diffraction data reuse: the good, the bad and the challenging

Workshop on When should small molecule crystallographers publish raw diffraction data?

DDDWG

Public discussion forum

Workshop at ECM-27, Bergen: August 6 2012

COMCIFS Symposium at ECM-28, Warwick: August 25 2013

Workshop at ECM-29, Rovinj: August 22-23 2015

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Report

Workshop at ACA 2017, New Orleans: May 26 2017

Final report

Online dictionary

Symmetry Font

Awards and Prizes Honouring our structural scientist community

Ewald prize

Struchkov Prize

Bragg Prize

Gjønnes Medal

Nobel prize

Conferences

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Crystallography in Africa

Crystal Growing Competition

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Building Science Capacity in Africa

International Year of Crystallography 2014

Founding of LAAAMP

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Teaching resources

A font for crystallographic symmetry elements

Bragg Lecture 2001

Crystal growing

Introduction to the crystal class models

Introductory note

Make some close-packed rhombic dodecahedra

Polyhedral models

Preface

Space filling

The Power of Powder Diffraction

The analytic theory of point systems

The evolution of synchrotron radiation and the growth of its importance in crystallography

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Events
Events Archive

Events Archive

Schools

MCCS-2026. Macromolecular Crystallography and CryoEM School

Spain

23 Mar 2026

Madrid
Schools

High-pressure techniques (2nd edition)

France

23 Mar 2026

Grenoble
Conferences

XXII Discussions in Structural Molecular Biology and 9th User Meeting of CIISB (Czech Infrastructure for Integrative Structural Biology)

Czech Republic

19 Mar 2026

NovÃ© Hrady, South Bohemia
Conferences

6th International Conference on Three-Dimensional Cryo-EM Image Analysis

United States

18 Mar 2026

Lake Tahoe, CA
Workshops

Best Practices in Cryo-EM Workshop

Italy

17 Mar 2026

Milan
Training courses

NYSBC 2026 SPA short course

United States

16 Mar 2026

New York
Symposia

March 2026 Stanford Electron Microscopy-X (EM-X) Symposium

2 Mar 2026

Online
IUCr supported meeting Schools Lectures Training courses

WiSe-Cryst 2026: Winter School on Electron Crystallography

Germany

2 Mar 2026

JÃ¼lich
Training courses

Cryo-EM in Structural Biology March 2026 course

United Kingdom

2 Mar 2026

Leeds
Conferences

34th Annual Meeting of the German Crystallographic Society

Germany

25 Feb 2026

University of LÃ¼beck
Conferences

34th Annual Meeting of the German Crystallographic Society

Germany

25 Feb 2026

University of Lübeck Ratzeburger Allee 160 23562 Lübeck (Germany)
IUCr sponsored meetings Schools

Montevideo School on Small Molecule Crystallography - MVD School 2026 and Cambridge Crystallographic Data Centre (CCDC) Workshop

Uruguay

23 Feb 2026

Montevideo
IUCr sponsored meetings Schools

International School on Fundamental Crystallography and Workshop on Rietveld Refinement Analysis (ISFC-2026)

India

23 Feb 2026

National Institute of Technology Rourkela (Odisha)
Schools

Hercules European School

France

22 Feb 2026

Grenoble
Seminars Other

Women in scientific organizations: 10 years of global evidence from science academies and unions

11 Feb 2026

Webinar

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Lectures

National crystallographic association meetings

Neutron scattering

Open Lab

Regional crystallographic association meetings

Schools

Schools IUCr supported

Seminars

Symposia

Training courses

Workshops

Other

Topic

Accelerators

Aperiodic crystallography

Applied crystallography

Art and history

Biological macromolecules

Characterisation of materials

Charge, spin and momentum densities

Chemical crystallography

Computing

Cryo electron microscopy

Crystal engineering

Crystal growth

Crystal physics

Data analysis

Diffraction microstructure imaging

Electron crystallography

Free-electron laser

General

High pressure

Industrial crystallography

Inelastic X-ray scattering

Magnetism

Materials

Mathematical and Theoretical Crystallography

Metals and metallurgy

Microscopy

Mineralogy

Nanomaterials

Neutron scattering

NMR crystallography

Open Lab

Polymorphism

Powder diffraction

Quantum crystallography

Radiation damage

Radiation physics

Small-angle scattering

Solid-state chemistry

Solid-state physics

Structural chemistry

Surface studies

Synchrotron radiation

Topography

X-ray fluorescence

X-ray optics and imaging

X-ray spectroscopy

XAFS studies

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International Union of Crystallography

Scientific Union Member of the International Science Council (admitted 1947). Member of CODATA, the ISC Committee on Data. Partner with UNESCO, the United Nations Educational, Scientific and Cultural Organization in the International Year of Crystallography 2014.

International Science Council Scientific Freedom Policy

The IUCr observes the basic policy of non-discrimination and affirms the right and freedom of scientists to associate in international scientific activity without regard to such factors as ethnic origin, religion, citizenship, language, political stance, gender, sex or age, in accordance with the Statutes of the International Council for Science.

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