Welcome to the

International Union of Crystallography

The IUCr is an International Scientific Union. Its objectives are to promote international cooperation in crystallography and to contribute to all aspects of crystallography, to promote international publication of crystallographic research, to facilitate standardization of methods, units, nomenclatures and symbols, and to form a focus for the relations of crystallography to other sciences.

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Weak interactions in crystals: an integrated approach

[weak interactions cover]Weak interactions have been gaining in importance and interest over the last 20 years owing to their applicability and usefulness in a wide range of scientific disciplines. They are essential in the formation of inclusion compounds, in the self-assembly of host–guest molecular complexes and in the study of polymorphism, co-crystals, phase transitions and charge density.

The May 2018 issue of Acta Crystallographica Section E Crystallographic Communications, "Weak interactions in crystals: an integrated approach", explores the fundamental role of detailed structural analysis in understanding weak interactions in the solid state. An Editorial by Chiara Massera and Helen Stoeckli-Evans introduces this special issue and is followed by a general review by Andrei Batsanov, which highlights the history, state-of-the-art and future developments of this field. The articles comprise six Research Communications on molecular salts, organic compounds and host–guest and coordination complexes, in which the weak interactions reported have in many cases been analysed by a combination of crystallographic analysis and theoretical techniques, showing the importance of an integrated approach. The role of different experimental set ups and refinement strategies has been highlighted in an Application Note.

Acta E has long been a benchmark for high-quality crystallographic data and structural discussions within the landscape of chemical scientific publications. The rigorous editing and reviewing of the papers, combined with the speed of publication and the open-access editorial policy, makes the journal easily accessible to a very broad audience, encouraging the authors to place their results in a larger scientific context. This is the first special issue that Acta E has produced and heralds an expansion of the journal's chemical content to highlight hot and consolidated topics through application notes, themed issues and reviews.

Posted 01 May 2018


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Journal of Applied Crystallography: the first 50 years and beyond


The first issue of Journal of Applied Crystallography appeared in April 1968. So, with the April 2018 issue we celebrate its 50th birthday. Although the name suggests a focus on crystallography, Journal of Applied Crystallography has served a broad interdisciplinary readership ever since its conception, and the very first paper published was a paper on electron microscopy [Heidenreich, Hess & Ban (1968). J. Appl. Cryst. 1, 1-19; https://doi.org/10.1107/S0021889868004930]. Before long, Journal of Applied Crystallography had developed its reputation as a reliable forum for rigorously reviewed papers across the whole breadth of applied crystallography, with a strong presence of research combining crystallographic methods with other measurements.

Through the hard work of all our editors and editorial staff, Journal of Applied Crystallography continues to be recognized as a place to publish significant research featuring applied crystallography and crystallography applied in an interdisciplinary setting, as well as studies on noncrystalline materials. Our mix of published papers continues to include work associated with high-brilliance synchrotron and free-electron laser X-ray sources, despite many other avenues (both IUCr and non-IUCr) being available for reporting such research. We retain a strong presence in neutron scattering applications, and we continue to encourage industrial applications of crystallography. Finally, our founding Editor, André Guinier, would be very pleased to see that the prominence of small-angle scattering, the field he founded, has not diminished in these pages over the years.

We express our appreciation for all the readers, authors, reviewers, editors and technical staff who have made the journal what it has become over the past 50 years. And we look forward to working with the Journal of Applied Crystallography community to make the next 50 years even better.

This is an edited version of the full editorial celebrating the journal's 50th anniversary [Allen, Hajdu & McIntyre (2018). J. Appl. Cryst. 51, 233-234; https://doi.org/10.1107/S1600576718004478]. To mark this special occasion, the very first article and the top cited articles from the past 50 years are currently free to read here.
Posted 05 Apr 2018 


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Judy Flippen-Anderson (1941-2018)

[Judy Flippen-Anderson]On 31 March 2018, Judy Flippen-Anderson passed away at the age of 76 years. As well as being a cornerstone of the American Crystallographic Association, Judy tirelessly served on several IUCr Commissions [Journals, as Co-editor of Acta Crystallographica Section E (2002-2011); Small Molecules (1993-1996) and Structural Chemistry (1996-1999, Chair 1999-2002)]; as Editor of the IUCr Newsletter (2003-2013, in partnership with Bill Duax) and as a delegate to the IUCr General Assembly. Many will remember friendly chats with Judy at various meetings, and may like to view photos in the IUCr archive here. She will be greatly missed by her many friends in the crystallographic community. A full obituary will be published in due course.

Posted 04 Apr 2018 


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International Women's Day 8th March

Participants in the Molecular Dimensions' Women in Crystallography session at IUCr2017. From left to right: Rebecca Eno (speaker), Claire Naylor (organiser), Martha Brennich (speaker), Gayathri Pananghat (speaker), Elspeth Garman (speaker), Julia Contreras (speaker). Photo courtesy Molecular Dimensions.

Thursday 8th March is International Women's Day, and a good time both to celebrate the achievements of women in Crystallography and to take stock of whether the IUCr as an organization is doing enough to ensure gender equality. Helen Maynard-Casely, Christine Beavers, Claire Murray and Amber Thompson have kindly contributed an article to our Crystallites blog that reminds us of just how successful and influential women crystallographers have been, but also raises some serious questions. This follows an email from Elspeth Garman (co-signed by many others) to the Executive Committee that urged the IUCr to take action on gender equality. In response to Elspeth’s email, the Executive Committee of the IUCr proposed a policy on gender equality that was approved by the General Assembly at Hyderabad. Subsequently, the rules for sponsorship of meetings by the IUCr were amended to reflect this. IUCr Commission Chairs are now required to consider gender balance in addition to geographical and subject balance when nominating candidates for the International Programme Committee (IPC) for Prague 2020. Together with the appointment of a female IPC Chair, Ivana Smatanova, it is hoped that this will ensure a good balance of speakers in Prague.

Since her election to the Executive Committee in Hyderabad, Jenny Martin is doing an excellent job of keeping gender equality at the forefront of the Executive Committee’s thinking, but are the IUCr moving quickly enough? Why not go to the Crystallites blog now and tell us what you think?

More information on International Women’s Day and how it is celebrated around the World can be found at: https://en.wikipedia.org/wiki/International_Women's_Day

And some ideas for how you could celebrate it are here: https://www.internationalwomensday.com/

Posted 07 Mar 2018 


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IUCr Executive Committee member honoured

[Jenny M - Wunderly]Congratulations to Professor Jenny Martin, Director of the Griffith Institute for Drug Discovery at Griffith University in Brisbane, Australia; President of the Asian Crystallographic Association; and member of the IUCr Executive Committee, who was made a Companion of the Order of Australia (AC) in the Australia Day Honours List. Professor Martin is a renowned protein crystallographer and structural biologist, as well as a former Editor of Acta Cryst. D. Professor Martin has focused on determining the structure of disease-causing proteins so that new drugs can be designed to combat them. Her work in this field was also recognised recently by her election to the Australian Academy of Science, election as an Eminent Fellow of the Royal Australian Chemical Institute, and elevation to Bragg Member of the Royal Institution of Australia. She is a relentless champion for gender equality, as reflected in her being awarded the Wunderly Oration Medal from the Thoracic Society of Australia and New Zealand (see photo).

Professor Martin AC was overwhelmed by the award and the response (including trending on Twitter in Australia), saying “I was thrilled, humbled and shocked in equal measure. The award of an AC is a rare privilege and I am enormously grateful to whoever nominated me. It’s wonderful recognition of my work, my leadership in crystallography and drug discovery, and the values that I hold dear - excellence, respect, integrity, collegiality and authenticity.”

Additional reading

Griffith University News

ABC National (featured on News breakfast, national news) and online

Courier Mail

Australian Associated Press

Sydney Morning Herald

Australian Academy of Science

Brisbane Times

Posted 15 Feb 2018 


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Winners of the 2017 IUCr Crystal growing competition

[competition winners 2017]Continuing the success of the crystal growing competition that launched during IYCr2014, we are delighted to announce the winners of the 2017 IUCr Crystal growing competition.

Schoolchildren were invited to convey their experiences of growing crystals through a video. The entries were judged on their creativity, aesthetic value, description of the working plan and experimental work, clarity of explanation, scientific background and safety by an international panel. The winners, who will receive a certificate and medal, are as follows:

Category: 15-18 – GOLD: IES Valle del Andarax, Canjáyar (Spain); SILVER: Wellspring International Bilingual School, Hanoi (Vietnam); BRONZE: IES Heliópolis, Sevilla (Spain).

[competition logo 2018]Category: 11-15 – GOLD: Bedok South Secondary School (Singapore); SILVER: Wellspring International Bilingual School, Hanoi (Vietnam); BRONZE: Sint-Barbaracollege, Gent (Belgium).

Category: Under 11 – GOLD: Escuela San José de Calasanz, San Juan (Argentina); SILVER: Escuela N° 65, Treinta y Tres (Uruguay); BRONZE: Escuela N° 65, Treinta y Tres (Uruguay).

and the winning videos can be watched here.

The 2018 IUCr Crystal growing competition is now open. The deadline for submission of videos is 18 November 2018. Please note that videos submitted to local competitions during 2018 may also be submitted to the IUCr competition.

Posted 01 Feb 2018