Crystal Structure Prediction of Energetic Materials

نویسندگان

چکیده

The synthesis and experimental testing of energetic materials can be hazardous, but their many industrial military applications necessitate constant research development. We evaluate computational methods for predicting the crystal structures molecular organic crystals from structure as a first step in computationally evaluating materials, which could guide work. Crystal prediction (CSP) is evaluated on test set 10 with known structures, initially using rigid-molecule, anisotropic atom–atom force-field approach, followed by reoptimization predicted dispersion-corrected solid-state density functional theory (DFT). CSP force field was found to provide good results some molecules, whose are reproduced one lowest-energy predictions, more variable than typical other small molecules. Reoptimization DFT leads reliable demonstrating an approach that applied area discovery

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evolutionary crystal structure prediction as a tool in materials design.

Ab initio methods allow a more or less straightforward prediction of numerous physical properties of solids, but require the knowledge of their crystal structure. The evolutionary algorithm USPEX, developed by us in 2004-2006, enables reliable prediction of the stable crystal structure without relying on any experimental data. Numerous tests (mostly for systems with up to 28 atoms in the unit c...

متن کامل

On Predicting the Crystal Structure of Energetic Materials from Quantum Mechanics

A quantum-mechanically-based potential energy function that describes interactions of dimers of the explosive cyclotrimethylenetrinitramine (RDX) is used to predict polymorphic structures of crystalline RDX. The potential was first used in crystal structure prediction methods which generate polymorphs of RDX and provide a 0 K ordering in energy. The 13 low energy-structures generated by crystal...

متن کامل

USPEX - Evolutionary crystal structure prediction

We approach the problem of computational crystal structure prediction, implementing an evolutionary algorithm—USPEX (Universal Structure Predictor: Evolutionary Xtallography). Starting from chemical composition we have tested USPEX on numerous systems (with up to 80 atoms in the unit cell) for which the stable structure is known and have observed a success rate of nearly 100%, simultaneously fi...

متن کامل

Powder crystallography of pharmaceutical materials by combined crystal structure prediction and solid-state 1H NMR spectroscopy.

A protocol for the ab initio crystal structure determination of powdered solids at natural isotopic abundance by combining solid-state NMR spectroscopy, crystal structure prediction, and DFT chemical shift calculations was evaluated to determine the crystal structures of four small drug molecules: cocaine, flutamide, flufenamic acid, and theophylline. For cocaine, flutamide and flufenamic acid,...

متن کامل

Evolutionary Crystal Structure Prediction as a Method for the Discovery of Minerals and Materials

Prediction of stable crystal structures at given pressure-temperature conditions, based only on the knowledge of the chemical composition, is a central problem of condensed matter physics. This extremely challenging problem is often termed “crystal structure prediction problem,” and recently developed evolutionary algorithm USPEX (Universal Structure Predictor: Evolutionary Xtallography) made a...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Crystal Growth & Design

سال: 2023

ISSN: ['1528-7483', '1528-7505']

DOI: https://doi.org/10.1021/acs.cgd.3c00706