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Drawing neutral coordination bonds as single bonds adds extra hydrogens to the molecular formula #3383

Description

@Kenichi-Endo
  • I am an ELNer
  • I am a system/ELN admin

Expected Behavior

According to the recommendations of modern journals, neutral coordination bonds should be written as normal single bonds rather than dative bonds. So the molecular formula should be correctly calculated when the structure is drawn in that way.

Current Behavior

When neutral coordination bonds are drawn as single bonds, Ketcher does not show any visual warnings and calculates the chemical formula correctly. However, Chemotion shows red markings on donor atoms, and adds extra hydrogens to the molecular formula, leading to miscalculation of various values.

Failure Information

Steps to Reproduce

  1. Create a sample
  2. Draw a coordination complex containing neutral ligands using only single bonds and save.
  3. Count the hydrogen number shown in the sample.

Context

Please provide any relevant information about your setup. This is important in case the issue is not reproducible except for under certain conditions.

  • OS: macOS
  • Chrome Browser
  • ELN v3,1.2.

Failure Logs / Screenshots

It should be only 5 hydrogens in this case.
Image

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