I am trying to simulate the properties of `FeF3(H2O)3`, so I download its [crystal structure file from Crystallography Open Database](http://www.crystallography.net/cod/2310500.html), but it seems that in the lattice, the `O` atom and `F` atom exist at the same coordinate position.
It also shows the `F` atom and `H2O` are at the same coordinate in the [original paper](https://journals.iucr.org/q/issues/1964/11/00/a04410/a04410.pdf), which measures the structure of `FeF3(H2O)3`,

Here is the chemical formula information of `FeF3(H2O)3`. it seems the H atoms would be lost when forming a solid crystal.

```
Chemical name   Fe F3 (H2 O)3
Formula F3 Fe H6 O3
Calculated formula  F3 Fe O3

```

My question is:  

Is it possible that two atoms exist at the same coordinate in the lattice?

[![enter image description here](https://i.stack.imgur.com/Vld20.png)](https://i.stack.imgur.com/Vld20.png)