# Al-Cl bonds not visible when gro file is opened using vmd

**URL:** <https://gromacs.bioexcel.eu/t/al-cl-bonds-not-visible-when-gro-file-is-opened-using-vmd/12766>\
**Category:** User discussions\
**Created:** [October 13, 2025, 4:15am UTC](https://gromacs.bioexcel.eu/t/al-cl-bonds-not-visible-when-gro-file-is-opened-using-vmd/12766 "2025-10-13T04:15:48Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![prayas](https://avatars.discourse-cdn.com/v4/letter/p/a8b319/32.png) [@prayas](https://gromacs.bioexcel.eu/u/prayas)\
**Post date:** [October 13, 2025, 4:15am UTC](https://gromacs.bioexcel.eu/t/al-cl-bonds-not-visible-when-gro-file-is-opened-using-vmd/12766/1 "2025-10-13T04:15:48Z")

</div>

GROMACS version:2021.4-Ubuntu-2021.4-2  
When I view my gro file of alcl4- simulation, the bonds are not recognized by vmd. What can I do about this?

 ![s](https://europe1.discourse-cdn.com/flex017/uploads/bioexcel1/original/2X/b/b764e4776090c886805d135992bb2ec3c17c2bf5.png)