Search Results for "coordinate"

Molsketch is a 2D molecular editing tool. Its goal is to help you draw molecules quick and easily. Of course you're creation can be exported afterwards in high quality in a number of vector and bitmap formats.

...(gecoor) Gustavo Domínguez Rodríguez, Gabriel Iván Canto Santana, Jorge Alejandro Tapia Gonzalez, Cesar Alberto Cab Cauich A problem that arises when applying specific strain fields to nanostructures is knowing the atomic coordinate positions that produce the required structural parameters, such as bond lengths and angles. Due to this, a simple-to-use program is implemented within a command-line, for both Linux and MS Windows environments, to generate atomic coordinate files for later use in first-principles simulation codes. The program considers monatomic armchair nanotubes, and the geometric parameters considered are: the length of the bonds perpendicular to the tube axis, the length of the non-perpendicular bonds, and the angle between two non-perpendicular bonds."

功能： A. 晶体坐标变换 -分数坐标和直角坐标互转 -向ａ,ｂ,ｃ三个方向堆积i,j,k个晶胞 -按给定对称关系得出所有相关原子 -按空间群对称性由不等价原子推出晶胞内所有原子 -查看空间群信息及对称等价位置 -自动转换*.cif文件 B. 分子坐标变换 -按指定对称操作任意平移、旋转、反映或反演当前的坐标 - 将一组坐标的中心平移到原点 -自动点群识别 -自动调整分子取向，包括 1)自动将分子的主轴调整到x,y,z轴上 2)自动将分子的自定义的某个轴调整到自定义的另外一个轴上 C. 各种文件格式的转换 注：Windows Vista使用注意：将cartes.exe的兼容模式改成Windows XP，并从用“管理员运行模式”

DRCS (Dimensionless Reaction Coordinate Software) calculates a dimensionless reaction coordinate for chemical reactions that can be used to classify transition states (and other geometries along a reaction path) as either early or late.