Add/Remove hydrogens doesn't work for Dative and Hydrogen bonds with Ring Topology
- Dominant language
- C++
- Stars
- 406
- Forks
- 134
- Avg merge
- 2d 11h
- Merged PRs (30d)
- 24
Description
**Steps to Reproduce**
1. Put on the canvas single dative bond and single hydrogen bonds with ring topology
2. Press Add/Remove implicit hydrogens button


**Actual behavior**
Nothing happens


**Expected behavior**
System shows 4 hydrogens for each carbon


**Ketcher version** [e.g. v2.4.2].
- Indigo Toolkit Version 1.18.0.0-g73c32dec3-wasm32-wasm-clang-12.0.0
- Ketcher Version 2.19.0-rc.2 Build at 2024-03-11; 12:30:30
- Chrome Version Version 122.0.6261.112 (Official Build) (64-bit)
- Win10
- Issue found while testing https://github.com/epam/Indigo/issues/1436
Contributor guide
No contributing guide indexed for this repository
Research direction
Reproduce the issue in Ketcher using the Add/Remove implicit hydrogens button with dative and hydrogen bonds that have ring topology, using the Indigo and Ketcher versions listed. Trace the implicit-hydrogen handling from that action and verify that each carbon displays four hydrogens for both examples without changing other bond behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, wasm
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100