Error with vector3 initialization

Im getting this error :"Assets/_Scripts/PlayerController.cs(27,39): error CS1922: A field or property UnityEngine.Vector3' cannot be initialized with a collection object initializer because type UnityEngine.Vector3' does not implement `System.Collections.IEnumerable' interface"

 using UnityEngine;
 using System.Collections;
 
 
 //[System.Serializable]
 //public class Bounday{
 //
 //
 //}
 
 
 public class PlayerController : MonoBehaviour {
 
     public float speed;
 //    public Bounday boundry;
     Vector3 Position;
     public float xMin,xMax,Zmin,zMax;
 
     void FixedUpdate(){
         float moveHorizontal = Input.GetAxis ("Horizontal");
         float moveVertical = Input.GetAxis("Vertical");
         Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
         rigidbody.velocity = movement*speed;
 
 
         Position = rigidbody.position;
         Position = new Vector3{
             Mathf.Clamp  (rigidbody.position.x,xMin,xMax),
             0.0f,
             Mathf.Clamp  (rigidbody.position.z,Zmin,zMax)
         };      
        
 
         }   
 
 }

Thanks