(1) Scope. For purposes of section 355(e), this section provides rules under section 355(e)(4)(D) to determine whether a corporation is treated as a predecessor or successor of a distributing corporation (Distributing) or a controlled corporation (Controlled) with respect to a distribution by Distributing of stock (or stock and securities) of Controlled that qualifies under section 355(a) (or so much of section 356 as relates to section 355) (Distribution). This section also provides rules limiting the amount of Distributing's gain recognized under section 355(e) on a Distribution if section 355(e) applies to an acquisition by one or more persons, as part of a Plan, of stock that in the aggregate represents a 50-percent or greater interest (Planned 50-percent Acquisition) of a Predecessor of Distributing, or a Planned 50-percent Acquisition of Distributing. In addition, this section provides rules regarding the application of section 336(e) to a Distribution to which this section applies. This section also provides rules regarding the application of section 355(f) to a Distribution in certain cases.