Abstracts

Electron Diffraction for Charge Density Studies: Historical Perspectives and Modern Data Processing Considerations

Charge density research and electron diffraction share well-established historical connection. This presentation provides a concise overview of various electron diffraction and microscopy techniques capable of yielding valuable charge density information

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Quantum crystallography and NMR crystallography

A weakness of current NMR crystallography for organic solids is the relatively poor positioning of H by independent atom modelling in XRD refinement. In order to obtain reasonable agreement with NMR data

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Data Quality

Crystallography has established a de-facto, well-understood, level of quality in its data over many decades. This is largely based on a long history of standardised instrumentation

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AI can provide phases at 2 Å: Can Quantum Crystallography help us to a high-quality structure at this resolution?

By exploring the intersection of AI and quantum crystallography, we aim to spark a dialogue on how these fields can co-evolve to tackle the enduring challenges of structural determination in the low-resolution regime.

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Defining Tools for Complex Small Molecules to Enable Assessment of Quality and Appropriate Reuse of Data

An important, but often difficult to evaluate, aspect of small molecule crystallographic structure analysis is an understanding of how a refinement has been performed. One of the tools tha can be used is to evaluate the likelihood of a given bond in a structure, and from this calculate the total likelihood of the structure

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QCrBox: A Containerised Platform for Quantum Crystallographic Workflows

We will report on our progress to build a similarly user-friendly platform, that focusses on reducing practical barriers such as complex multi-software workflows, interoperability challenges, and installation difficulties across diverse operating systems and software dependencies.

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The QCr CIF Dictionary

An update on the QCr CIF dictionary, which is currently under development.

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Hirshfeld Atom Refinement for Spin State Investigations on Transition Metal Complexes

The spin states of transition metal complexes have been extensively studied using both theoretical and analytical methods. Here, we demonstrate an alternative method utilising Hirshfeld Atom Refinement…

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Quantum Crystallographic Investigation of Two-Electron Multicentre Bonds in Radical Systems

We present a systematic quantum crystallographic investigation of various 2e/mc-bonded radical systems, ranging from discrete dimers to 2D arrays. The simplest systems studied include TCNE radical anion dimers, while more complex systems feature 2D arrays of TCNQ radical anions with partial charges of −1/2.

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