Louise Dawe

Crystallify Interactive 3D visualization tool for crystallographic space groups

This is a really neat webtool for crystallographic symmetry.

(switch on "Manage symmetry" > "complete elements" to get the full picture)

https://www.crystallify.com/

@strucbio #Crystallography #StructuralBiology

The Canadian National Committee for Crystallography will be hosting a Codding Lecture in support of early career crystallographers on Nov 5 at 1 PM EST. Strain and Defect Analysis in InSb/GaAs Heteroepitaxy with a Novel 3D Reciprocal Space Approach by Trevor Blaikie. xtallography.ca/index.php/co...

The Canadian National Committee for Crystallography will be hosting a Codding Lecture in support of early career crystallographers on Nov 5 at 1 PM EST. Strain and Defect Analysis in InSb/GaAs Heteroepitaxy with a Novel 3D Reciprocal Space Approach by Trevor Blaikie. xtallography.ca/index.php/co...

arXiv will no longer accept review articles and position papers unless they have been accepted at a journal or a conference and complete successful peer review.

This is due to being overwhelmed by a hundreds of AI generated papers a month.

Yet another open submission process killed by LLMs.

IUCr logo as a jack o lantern

It sure would be ... scary to miss any deadlines for #IUCr2026

Abstracts are due February 15, 2026:
event.fourwaves.com/...

Register before March 31, 2026 for discounted rates
event.fourwaves.com/...

Newsletter sign-up
www.iucr2026.org/

#HappyHalloween

From refinery waste to useful materials and green fuel: New research could revolutionize the global aluminum industry New research by UNB chemistry professor Dr. Barry Blight could revolutionize how we deal with aluminum refining waste, aluminum recycling and even fuelling our world—reducing how much material ends up...

Happy to be highlighted by @unbresearch.bsky.social @discoverunb.bsky.social for this exciting work completed by Dr Mason Lawrence and Rob Horne on our team, supported by Research NB. blogs.unb.ca/newsroom/202...

World map with powder diffraction overlay

Explore the world of Powder Diffraction at IUCr2026.
Microsymposia will include New developments in in-situ and in-operando experimentation: pushing boundaries and In-situ studies of materials synthesis and crystal growth
Submit your abstract today!
event.fourwaves.com/...

Role of restraints on hydrogen atoms in Hirshfeld atom refinement: the case of tri-aspartic acid trihydrate Restraints for atomic displacement parameters of hydrogen atoms in Hirshfeld atom refinement are tested using two polymorphs of the water-rich l-Asp-l-Asp-l-Asp (DDD) crystal structure.

Ravish Sankolli et al.: Role of restraints on hydrogen atoms in Hirshfeld atom refinement: the case of tri-aspartic acid trihydrate #HirshfeldAtomRefinement #Restraints @unibern@unibern@durham_uni@fu_berlin@unibern...#IUCr https://journals.iucr.org/paper?S2052520625006110

Yes, please! Our Teaching and Education section continues to be a great place to submit this! (Though, I would likely read NatureEdibleMaterials...)

I hope to finish the rest of wallpaper groups cookies during this New Year holidays :)

We report the design and solid-state characterization of a dissymmetric N,N′-bidentate thioether ligand and its structural response under protonation and metal coordination, using single-crystal X-ray diffraction and Hirshfeld surface analysis. @actacrystc.iucr.org @wilfridlaurieruni.bsky.social

Structural adaptability and hy­dro­gen bonding in a dissymmetric pyrimidine thio­ether ligand A dissymmetric pyrimidine thio­ether N,N′-bidentate ligand was synthesized along with its hydrated form, nitrate salt and a cobalt(II) com­plex. All four structures were characterized by single-crysta...

Congratulations to Kaycee (NSERC USRA) and Kaitlyn (MSc, defended this month) as first authors on this work, and their outstanding mentor Lana, now a faculty member at York! Structural adaptability and hy­dro­gen bonding in a dissymmetric pyrimidine thio­ether ligand doi.org/10.1107/S205...

Pie looks amazing, and I have the exact same peeler! It is a 10/10!

A collection of bright yellow spots starts from the centre of the picture, from the strongest, central one. Clearly not periodically arranged, they have a point-symmetry evident since 4 equally spaced lines of stronger spots irradiate from the centre of the image. Between them, additional smaller spots form geometrical patterns vaguely resembling the fourier transform of an aperiodic crystal. The background colour alternate dark blue and soft teal, whose calm feeling contrasts the energy present in the bright yellow spots, looking like tiny fireflies.

My fellow #FourierTransform enthusiasts, here's a new entry in my collection ready for you, nr. 56! The real-space picture is an intersection of two tilings of squares, one tilted by 43°. Moiré pattern? Definitely related 💯

As always, you can find the high-res pair at behance.net/specialdefects

📣 The #GE3C has awarded the Gold Medal 🎖️, its highest distinction, to Professor Santiago García Granda, from the University of Oviedo and President of the IUCr, in recognition of his extensive and outstanding 🔝 scientific career in the field of crystallography 💎.

Logo for the 55th Inorganic Discussion Weekend at Western University, London, Ontario. Image contains a tree with a ferrocene molecule.

We're excited to announce that the 55th Inorganic Discussion Weekend will take place November 7th-9th, 2025 at Western University! Registration and abstract submission are NOW OPEN on our website: idw2025.ca

More details of the event can be found on our website!

It far exceeded expectations. 11/10; will🍟🥒again.

My head in a dill pickle cut-out, just before eating way too many dill pickle fries.

Fries, piled high with finely sliced dill pickles. Very, very generous portion size.

Ruby-throated hummingbird, with face into a jewel weed flower.

Two sandhill cranes on a grass-covered walking trail.

Oh wow! I'm a monthly regular to Long Point/Port Rowan, and would like to recommend the best downscale establishment, Chip Ship. I was there last Saturday, just after seeing this hummingbird at the banding station and just before heading to Big Creek Marsh to see Sandhill cranes!

Ruby-throated hummingbird, with wings back and beak inside the flower of a jewelweed.

Headed into the second full week of Fall term!

Crystallography in school Preconditions and applications for teaching crystallography in high school chemistry classes are presented.

A great approach: "analysis of #CrystalStructures in science classes at #HighSchools offers a wide range of opportunities for illustrating and improving understanding of fundamental #StructuralChemistry concepts"😀 doi.org/10.1107/S160...
@japplcryst.iucr.org #K12 #crystallography #Education

User interface of the CrystalNets web app

Architecture of the CrystalNets web app, showing client-side and server-side tasks.

“CrystalNets: a web app for topology determination of crystalline structures” — our latest preprint on @chemrxiv.org doi.org/10.26434/che...

CrimsonCalc: a software tool for pressure determination based on ruby fluorescence spectra Software optimized to fit ruby fluorescence spectra, automatically extract the peak positions and calculate the pressure according to the Ruby2020 gauge is presented.

If you're measuring ruby fluorescence to determine pressure in your DAC experiments, try our new program:
"CrimsonCalc: a software tool for pressure determination based on ruby fluorescence spectra".
Just published in @japplcryst.iucr.org.
@iucrjournals.bsky.social
doi.org/10.1107/S160...

The European Crystallographic Meeting begins today in Poznań, Poland! 🎉Stop by the IUCr booth to connect, chat about publishing, and get a preview of IUCr2026 (@iucr2026.bsky.social) in Calgary, Canada. We’re excited to welcome you next year! www.iucr2026.org

The European Crystallographic Meeting begins today in Poznań, Poland! 🎉Stop by the IUCr booth to connect, chat about publishing, and get a preview of IUCr2026 (@iucr2026.bsky.social) in Calgary, Canada. We’re excited to welcome you next year! www.iucr2026.org

Fresh chillies and lacto fermentation of chillies

Wow! Nearly 17k views of my @ActaCrystC.IUCr.org paper about the #SCXRD #CrystalStructure of spicy capsaicin. Time to celebrate with some chillies! 🌶🌶🌶
doi.org/10.1107/S205...
#ChemSky #RealTimeChem #Crystallography #Capsaicin #Capsicum #Diffraction

While attending the European Crystallographic Meeting in Poznan, Poland (Aug. 25 - 29), please stop by the @iucrjournals.bsky.social booth (or anywhere else you see me!) to chat about publishing your crystallographic teaching and education initiatives in @japplcryst.iucr.org!

I'll be attending the European Crystallographic Meeting in Poznan, Poland next week. Please stop by the IUCr booth if you would like to chat about publishing your work related to structural science, crystal engineering, and materials in @actacrystb.iucr.org!

👉 Whether you're recharging solo or adventuring with new friends, it's a must-add to your IUCr2026 itinerary. Plan ahead, summer excursions fill fast!

More info: www.albertaparks.ca/...

Can Z, the number of formula units per unit cell, be a fraction? A report of the IUCr Commission on Crystallographic Nomenclature The Commission on Crystallographic Nomenclature has concluded that, in some rare, carefully justified circumstances, Z, the number of formula units in the unit cell, may be a fraction.

Carolyn P. Brock: Can Z, the number of formula units per unit cell, be a fraction? A report of the IUCr Commission on Crystallographic Nomenclature #CommissionReport #Z #NumberOfFormulaUnitsInTheUnitCell ... #IUCr https://journals.iucr.org/paper?S2053273325007053

A Western Meadowlark sings from sagebrush. Overlay text reads "Field Trip Report: On the Ground in the Grasslands with Birds Canada"

A Burrowing Owl perches on top of a fencepost, which bears an orange band of tape.

A female Sharp-tailed grouse stands alert in long grass.

A Long-billed Curlew walks through short vegetation.

In early June, Birds Canada Board Member and long-time supporter Janet Hill (@saskajanet.bsky.social) joined our team on a grasslands conservation tour across southern Saskatchewan.

Learn how science, innovation, and partnerships are making a difference for grassland birds: tinyurl.com/2j92txnt