In any suit for involuntary dissolution  or in any proceeding for voluntary dissolution initiated by the vote of shareholders representing only 50 percent of the voting power  the corporation or  if it does not elect to purchase  the holders of 50 percent or more of the voting power of the corporation (the “purchasing parties”) may avoid the dissolution of the corporation and the appointment of any receiver by purchasing for cash the shares owned by the plaintiffs or by the shareholders so initiating the proceeding (the “moving parties”) at their fair value