diff --git a/Assets/script/Atom.cs b/Assets/script/Atom.cs
new file mode 100644
index 0000000..bb74bbd
--- /dev/null
+++ b/Assets/script/Atom.cs
@@ -0,0 +1,9 @@
+[System.Serializable]
+public class Atom
+{
+    // nom de l'atom
+    public string element;
+
+    // coordonée XYZ
+    public float[] geometry;
+}
\ No newline at end of file
diff --git a/Assets/script/Atom.cs.meta b/Assets/script/Atom.cs.meta
new file mode 100644
index 0000000..7d83319
--- /dev/null
+++ b/Assets/script/Atom.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 9d3069c87e06b0c4c9a88c0695461936
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/script/Bond.cs b/Assets/script/Bond.cs
new file mode 100644
index 0000000..2b624b5
--- /dev/null
+++ b/Assets/script/Bond.cs
@@ -0,0 +1,9 @@
+[System.Serializable]
+public class Bond
+{
+    // numéro des atome lier
+    public int[] atoms;
+
+    // nombre de liaison
+    public int order;
+}
\ No newline at end of file
diff --git a/Assets/script/Bond.cs.meta b/Assets/script/Bond.cs.meta
new file mode 100644
index 0000000..2f870d7
--- /dev/null
+++ b/Assets/script/Bond.cs.meta
@@ -0,0 +1,11 @@
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diff --git a/Assets/script/Molecul.json b/Assets/script/Molecul.json
new file mode 100644
index 0000000..073d783
--- /dev/null
+++ b/Assets/script/Molecul.json
@@ -0,0 +1,26 @@
+{
+    "molecules":[
+        {
+            "name": "Dioxygène",
+            "formula": "O2",
+            "atoms": [
+                {
+                    "element": "O",
+                    "geometry": [0.0, 0.0, 0.0]
+                },
+                {
+                    "element": "O",
+                    "geometry": [1.2, 0.0, 0.0]
+                }
+            ],
+            "bonds": [
+                {"atoms": [0, 1], "order": 2}
+            ],
+            "properties": {
+                "molecularMass": 32.0,
+                "meltingPoint": -218.8,
+                "boilingPoint": -183.0
+            }
+        }
+    ]
+}
diff --git a/Assets/script/Molecul.json.meta b/Assets/script/Molecul.json.meta
new file mode 100644
index 0000000..b640aa5
--- /dev/null
+++ b/Assets/script/Molecul.json.meta
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 3a11d0f923ae50c4d82ee1dda0f629a3
+TextScriptImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
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diff --git a/Assets/script/Molecules.cs b/Assets/script/Molecules.cs
new file mode 100644
index 0000000..c2f09f9
--- /dev/null
+++ b/Assets/script/Molecules.cs
@@ -0,0 +1,25 @@
+[System.Serializable]
+public class Molecule
+{
+    // nom molécules
+    public string name;
+
+    // formule melécule
+    public string formula;
+
+    // liste des atoms
+    public Atom[] atoms;
+
+    // liste des liason entre les atoms
+    public Bond[] bonds;
+
+    // prorpiété de la molécule
+    public Properties properties;
+}
+
+[System.Serializable]
+public class Molecules
+{
+    // liste des liason entre les atoms
+    public Molecule[] molecules;
+}
\ No newline at end of file
diff --git a/Assets/script/Molecules.cs.meta b/Assets/script/Molecules.cs.meta
new file mode 100644
index 0000000..55e339c
--- /dev/null
+++ b/Assets/script/Molecules.cs.meta
@@ -0,0 +1,11 @@
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diff --git a/Assets/script/Properties.cs b/Assets/script/Properties.cs
new file mode 100644
index 0000000..b8b0d18
--- /dev/null
+++ b/Assets/script/Properties.cs
@@ -0,0 +1,10 @@
+[System.Serializable]
+public class Properties
+{
+    // masse en g/mol
+    public float molecularMass;
+    // température de fusion (solid->liquide)
+    public float meltingPoint;
+    // température d'évaporation (liquide-> gaz)
+    public float boilingPoint;
+}
\ No newline at end of file
diff --git a/Assets/script/Properties.cs.meta b/Assets/script/Properties.cs.meta
new file mode 100644
index 0000000..f47d50b
--- /dev/null
+++ b/Assets/script/Properties.cs.meta
@@ -0,0 +1,11 @@
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+guid: 5df75892dfdcac7468e63229a5bd0ab8
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diff --git a/Assets/script/ReadMolecule.cs b/Assets/script/ReadMolecule.cs
new file mode 100644
index 0000000..e5a9c4e
--- /dev/null
+++ b/Assets/script/ReadMolecule.cs
@@ -0,0 +1,23 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class ReadMolecule : MonoBehaviour
+{
+    public TextAsset jsonFile;
+
+    void Start()
+    {
+        Molecules moleculesInJson = JsonUtility.FromJson<Molecules>(jsonFile.text);
+
+        foreach (Molecule molecule in moleculesInJson.molecules){
+            Debug.Log("Found molecules: " + molecule.name);
+        }
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        
+    }
+}