Is there a molecule that contains water chemically bonded to another molecule/element? Could someone provide an example or two?


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    $\begingroup$ That is a hydrate $\endgroup$ – A.K. Aug 2 '18 at 5:52
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    $\begingroup$ Define "chemically bonded". Are you talking about ionic, polar, dipole-dipole, or dispersion forces, or something else? $\endgroup$ – Zubo Aug 2 '18 at 10:02
  • $\begingroup$ I am talking about ionic/covalent. $\endgroup$ – Armend Veseli Aug 2 '18 at 10:12

Off the top of my head: Coordination complexes that have water ligated to a (transition) metal atom.

enter image description here

See corresponding Wikipedia article

A familiar example would be (hydrated) copper sulfate $\ce{CuSO4.5H2O}$, which has 4 water molecules ligated to the copper atom. (The fifth water molecule mentioned in the chemical formula is associated copper sulfate via hydrogen bonds)

enter image description here

enter image description here

The picture is sources from the Wikipedia article for copper sulfate, and the diagram is sourced from this Quora post

If you're new to the idea of complex ions, this chemguide article offers a good intro to the topic.

  • $\begingroup$ Many examples such as this. You can have a look at montmorillonite as well (hydrated sodium calcium aluminium magnesium silicate hydroxide), even if the exact nature of the bond with water is a bit unclear (there is a balance between the bond with hydroxide and the associated water molecules). $\endgroup$ – Martigan Aug 2 '18 at 9:30

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