(a) A powerholder of a presently exercisable power of appointment may contract: (1) Not to exercise the power; or (2) To exercise the power if the contract when made does not confer a benefit on an impermissible appointee.
Power to contract: presently exercisable power of appointment
D.C. Code § 19-1704.05, under Disclaimer or Release; Contract to Appoint or Not to Appoint..
D.C. Code § 19-1704.05