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修改分子中的任何几何参数(距离、角度、二面角)。该修饰可以伴随着一个原子、两个原子或选定的原子群的位移;
用鼠标在分子图像上拖曳原子或碎片或旋转碎片的可能性(图5);
应用任意几何参数的迭代算法(图6);
一种易于使用的实用程序,用于将点群应用于分子(图8)。
Chemcraft提供了输出文件以结构化的形式呈现。被读取的文件被分成单的元素,例如单的几何形状或振动模式。对于每个元素,从文件中提取所有可用数据:原子坐标、能量梯度等。所有元素都呈现在分层列表中(图1)。单击列表中的元素自动显示图像上的单几何或模式,并允许显示不同的属性。该接口提供了计算数据的可靠可视化,包括非标准类型的计算、不完整的计算等。它还允许具有多个计算任务的复杂文件被可视化。对于能量扫描或IRC计算,通过扫描/IRC步骤将所有几何结构分成组。除了图形的数据表示之外,Chemcraft概述了输出文件的基本部分,并为文件的每个元素显示了一个简短的“摘要”。
For the output files with *metry optimization, scan jobs, often the molecular *metry is switched several times during the optimization. To avoid this problem, choose the Tools button at the left (the job node should be clicked firstly), then "Set common orientation for all *metries".
Chemcraft provides an iterative algorithm for constructing molecular *metry according to an arbitrary set of *metrical parameters. The "Tools/Console editor" menu item opens a window, where one can enter required values of *metrical parameters in text format.
The main capabilities of the program include:
- Rendering 3-dimensional pictures of molecules by atomic coordinates with the possibility to examine or modify any *metrical parameter in the molecule (distance, angle);
- Visualization of Gamess, Gaussian, NWChem, ADF, Molpro, Dalton, Jaguar, Orca, QChem output files: representation of individual *metries from files (optimized structure, *metry at each optimization step, etc.), animation of vibrational modes, graphical representation of gradient (forces on nuclei), visualization of molecular orbitals in form of isosurfaces or colored planes, visualization of vibrational or electronic (e.g., TDDFT) spectra, possibility to show SCF convergence graphs, and some other features;
- Different tools for constructing molecules and modifying molecular *metry: using standard molecular fragments, "dragging" atoms or fragments in the molecule's image, utility for setting a symmetry point group, and other possibilities;
- Producing publication-ready images of molecules in customizable display modes, containing required designations (labels, lines, etc.);
- Some additional utilities for preparing input files: construction of Z-matrices, automatic generation of input files with non-standard basis sets, converting MOs read from an output file into the format of input file.
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