# Feedback Wanted - Common Ligands / Functional Groups

**URL:** <https://discuss.avogadro.cc/t/feedback-wanted-common-ligands-functional-groups/3930>\
**Category:** General Discussion\
**Created:** [August 15, 2022, 11:09pm UTC](https://discuss.avogadro.cc/t/feedback-wanted-common-ligands-functional-groups/3930 "2022-08-15T23:09:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ghutchis](https://discuss.avogadro.cc/user_avatar/discuss.avogadro.cc/ghutchis/32/456_2.png) [@ghutchis](https://discuss.avogadro.cc/u/ghutchis)\
**Post date:** [August 15, 2022, 11:09pm UTC](https://discuss.avogadro.cc/t/feedback-wanted-common-ligands-functional-groups/3930/1 "2022-08-15T23:09:25Z")

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I posted back in [May](https://discuss.avogadro.cc/t/feedback-wanted-template-coordination-tool/3814) about a new “template tool” for creating inorganic complexes and adding larger functional groups (e.g., click on a hydrogen atom to turn it into a t-butyl or sulfate group).

I’m working to build up a library of [common ligands](https://github.com/OpenChemistry/fragments/tree/main/ligands) ranging from monodentate to hexadentate and various haptic ligands.

If you’re an inorganic or organometallic chemist, what are some common “must have” ligands?

- aqua
- ammine
- carbony
- cyano
- en
- bpy
- EDTA
- etc.

We also have a library of [~110 functional groups](https://github.com/OpenChemistry/fragments/tree/main/groups) which should make it easier to build out “chunks”. Right now, we have:

- carboxylate
- amide
- ester
- nitro
- sulfonate

What do you think are the top ~10 common functional groups (eg., beyond -OH, -NH2, etc. which are already quick to add)?

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<div class="post-metadata">

**Author:** ![ghutchis](https://discuss.avogadro.cc/user_avatar/discuss.avogadro.cc/ghutchis/32/456_2.png) [@ghutchis](https://discuss.avogadro.cc/u/ghutchis)\
**Post date:** [August 16, 2022, 12:31am UTC](https://discuss.avogadro.cc/t/feedback-wanted-common-ligands-functional-groups/3930/2 "2022-08-16T00:31:27Z")

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A few images:

 ![Center](https://discuss.avogadro.cc/uploads/default/original/2X/0/05a269a3970dc1f38fa7e94361fbb80f46bac058.png)

 ![Ligands](https://discuss.avogadro.cc/uploads/default/original/2X/5/5fb2e4258cfe894b710acdb086bc9d95874924a3.png)  
png)

 ![FeHexaAqua](https://discuss.avogadro.cc/uploads/default/original/2X/3/357025e62b352806c886e833871fe92440cc76f0.png)

 ![ferrocene](https://discuss.avogadro.cc/uploads/default/original/2X/4/43a2e821aca5cb806a7afb4b8aa9d4d1fc2e3bbd.jpeg)

 ![CuPc](https://discuss.avogadro.cc/uploads/default/original/2X/8/83a37bdd47b83e563637db64f00d61532fa71496.jpeg)