UNEXTitle

UNEX is a program environment for investigation of molecular structure. It has been created by the Vishnevskiy Group. In this project we develop new and existing experimental methods and combine them to increase accuracy and precision of results. At the current stage the full support for the gas electron diffraction (GED) method is provided, from the calibration of instruments and data reduction to the refinement of molecular structure. Additionally, rotational constants can be used solely or in combination with GED data for determination of molecular geometry. See the manual and tutorial for details.

April 14, 2025

A new major version 2.0 of UNEX is released with lots of improvements! Note, in this update the input and output formats have been significantly changed. For consistency, many commands and keywords have also been harmonized and renamed. All details are in the manual. Also in this version appeared a tutorial, which can be useful as a starting point in UNEX mastering.

Cite UNEX as


or download the citation in BibTeX and RIS formats.

Development activity

2025-12-11:  Updated manual
2025-12-11:  Manual updated
2025-12-11:  Print intensity quantiles in ED pattern refinements
2025-12-09:  Print standard deviations of image calibration
2025-12-09:  Cleanups in image calibration
2025-12-09:  Refactored output from diffraction pattern refinement
2025-12-08:  Implemented calibration keywords for IMAGE:EDPTRNREFINE
2025-12-08:  Implemented IMGDETCALIB:READ
2025-12-08:  Added image detector calibration
2025-12-08:  Cleanups in tests

UNEX@SomoniPeak
Figure 1. UNEX and its main developer Yury Vishnevskiy (on the right) at the top of Ismoil Somoni Peak (7495 m) on Aug 9, 2017.