Pouako|Lecturer - Te Kura Mātai Matū |The School of Chemical Sciences - Medicinal Chemistry

Company Description: Waipapa Taumata Rau | The University of AucklanKo te whare Pūtaiao | The Faculty of Science at the University of Auckland is the largest and most highly ranked scie...

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Roadmap on Advancements of the FHI-aims Software Package

Roadmap on Advancements of the FHI-aims Software Package, Blum, Volker, Kokott, Sebastian, Rossi, Mariana, Scheffler, Matthias, Abbott, Joseph W. W., Mera Acosta, Carlos, Akkoush, Alaa, Ambrosetti, Alberto, Atalla, Viktor, Bagrets, Alexej, Behler, Joerg, Berger, Daniel, Bieniek, Björn, Björk, Jonas, Bohloul, Saeed, Box, Connor L., Boyer, Nicholas James, Brambila, Danilo Simoes, Bramley, Gabriel A., Bryenton, Kyle R., Camarasa-Gómez, María, Carbogno, Christian, Caruso, Fabio, Chutia, Sucismita, Ceriotti, Michele, Csányi, Gábor, Dawson, William, Delesma, Francisco A., della sala, fabio, Delley, Bernard, DiStasio, Robert, Dragoumi, Maria, Driessen, Sander, Dvorak, Marc, Erker, Simon, Evers, Ferdinand, Fabiano, Eduardo, Farrow, Matthew R., Fiebig, Florian, Filser, Jakob, Foppa, Lucas, Gallandi, Lukas, Garcia, Alberto, Gehrke, Ralf, Ghan, Simiam, Ghiringhelli, Luca, Glass, Mark, Goedecker, Stefan, Golze, Dorothea, Green, James A., Grisafi, Andrea, Grüneis, Andreas, Günzl, Johannes Jan, Gutzeit, Stefan, Hall, Samuel J., Hanke, Felix, Havu, Ville, He, Xingtao, Hekele, Joscha, Hellman, Olle, Herath, Uthpala, Hermann, Jan, Hernangómez-Pérez, Daniel, Hofmann, Oliver T, Hoja, Johannes, Hollweger, Simon, Hörmann, Lukas, Hourahine, Benjamin, How, Wei Bin, Huhn, William P., Hülsberg, Marcel, Panahian Jand, Sara, Jiang, Hongbing, Johnson, Erin, Jürgens, Werner, Kahk, Juhan Matthias, Kanai, Yosuke, Kang, Kisung, Karpov, Petr, Kempt, Roman, Khan, Danish, Kick, Matthias, Klein, Benedikt P., Kloppenburg, Jan, Knoll, Alexander, Knoop, Florian, Knuth, Franz, Köcher, Simone S., Kockläuner, Jannis, Körzdörfer, Thomas, Kowalski, Hagen-Henrik, Kratzer, Peter, Kus, Pavel, Laasner, Raul, Lang, Bruno, Lange, Björn, Langer, Marcel F, Larsen, Ask Hjorth, Lederer, Hermann

doi.org

Simplifying Reactive Force Field Simulations | ChemRxiv

Chemical reactivity modelling in large systems over extended timescales is computationally and theoretically challenging; ab initio methods are too expensive, while classical force fields cannot handl...

chemrxiv.org

mlip.js - ML Interatomic Potentials in the Browser

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Strategic MOF Linker Methylation to Direct Pore Structure and Local Dynamics

The marvelous substrate recognition of enzyme hosts is attributed to induced-fit binding, in which the enzyme host maintains a delicate balance between preorganization and flexibility. For synthetic porous hosts such as MOFs, programmable control over the local and global flexibility modes is thus crucial for the optimization of host–guest interactions. Here we show that methylation adjacent to the pyrene-arene junction of the linker permits the synthesis of a derivative of NU-1000 in which aryl rotation is thermally inaccessible, but small-angle librations remain facile. Mechanochemically promoted Suzuki cross-coupling was able to overcome the twin challenges of poor solubility and steric congestion to access a linker that could not be prepared in solution. The incorporation of methyl groups in the linker controls the local dynamics of the MOF pore and permits a window that interconnects channels in the unsubstituted MOF to evolve into a separate micropore environment. In addition, we show how the different chemical shifts observed for nuclei that extend into distinct MOF pores permit experimental determination of rotational barriers via variable-temperature 13C solid-state NMR.

pubs.acs.org

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Elastic Tensors from Pairwise Energy Frameworks in Molecular Crystals

The mechanical properties of molecular crystals are fundamentally important in their industrial applications across pharmaceuticals, agrochemicals, energetic materials and other areas. Despite this, complete measurement or even computational prediction of elastic tensors for molecular crystals is anything but commonplace. The absence of rapid, reliable and broadly applicable methods in this endeavor frequently leads chemists to rely on intuitive ideas and examination of pairwise intermolecular interactions such as hydrogen- or halogen-bonds in order to rationalize the mechanical behavior of molecular crystals. Such perspectives are widespread in contemporary literature, but the extent to which these notions yield reliable and quantifiable insight is itself relatively unexplored. We propose a simple approximation, the Equilibrium Pairwise Model (EPM), compatible with any method to predict intermolecular interaction energies, that directly and efficiently yields an estimate of the complete elastic tensor. The protocol can be performed for any given molecular crystal structure, even those directly from experiment (i.e., without geometry optimization), and is guaranteed by construction to yield a positive-definite result─in contrast to conventional methods where computing valid elastic tensors for molecular crystals can prove challenging even for well-established and otherwise accurate model chemistries. We examine the accuracy of this protocol, along with other classical and contemporary methods, against experiment and periodic (plane-wave) density functional theory calculations to assess their reliability and accuracy. Through examination of the failures and successes, we aim to provide chemical insight into the kinds of materials where the model and, more broadly, thinking based on pairwise intermolecular interactions can reliably explain mechanical or other material properties and where they should be avoided.

pubs.acs.org

Job vacancies, employment opportunities, academic and professional positions - Careers at Curtin | Curtin University, Perth Australia

Our mission is to transform lives and communities through education and research. Curtin employees form a unique and diverse community committed to innovative research and student learning. Find out a...

staff.curtin.edu.au

Job vacancies, employment opportunities, academic and professional positions - Careers at Curtin | Curtin University, Perth Australia

Our mission is to transform lives and communities through education and research. Curtin employees form a unique and diverse community committed to innovative research and student learning. Find out a...

staff.curtin.edu.au

Elastic Tensors from Pairwise Energy Frameworks in Molecular Crystals

Mechanical properties of molecular crystals are fundamentally important to their in- dustrial utility as pharmaceuticals or agrochemicals, energetic materials and more. Yet, complete measurements of e...

doi.org

High-Pressure Crystallization and Compression of Isobutyronitrile

The structural response of a high-pressure phase of isobutyronitrile up to 6.12 GPa was studied by using high-pressure single-crystal X-ray diffraction, periodic density functional theory (DFT), and C...

pubs.acs.org

PET-MAD as a lightweight universal interatomic potential for advanced materials modeling - Nature Communications

PET-MAD is a fast and lightweight universal machine-learning potential, trained on a small but diverse dataset, that delivers near-quantum accuracy in atomistic simulations for both organic and inorga...

nature.com