Camera Rotation

Hello Unity3D.I have a question about camera movement.How can i make it that whenever my character hits another character the camera rotates to a 90 degrees on the y-axis so that it looks at my player attacking the opponent?Then when there hasn't been any collision detected in the past 3 seconds the camera rotates back to the original spot before the attack on the other player?If anyone knows how to do this?Can you please tell me how?

Heres what i got so far #pragma strict

  var sceneCam : GameObject;
  sceneCam = GameObject.Find("MainCam");
 
 var impact : AudioClip;
 
 function OnCollisionEnter (hit : Collision)
 {
     if(hit.gameObject.name == "Player"){
     sceneCam. transform.Rotate(0,90,0);
     
     
     
     
     
     
     
     }
 }