Identifying the structures of certain types of molecular compounds can now take minutes, instead of days, and be performed much more accurately, say scientists who developed a new approach for analyzing key experimental X-ray data.
Knowing the structure of a molecule allows scientists to predict its properties and behavior. While X-ray diffraction measurements have become a powerful tool for determining molecular structure, identifying the three-dimensional structure that best fits the diffraction data can be a major challenge.
As will be reported in the September issue of Acta Crystallographica Section A, researchers at the University of Illinois at Urbana-Champaign have developed an algorithm that provides fast and accurate structure determination for organic compounds and other molecular structures that have a center of symmetry.
Jim Kloeppel | EurekAlert!
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Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
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