No. Salary can create room for a later year within the RRSP rules; dividends do not. Check whether new room can be used, including age limits, pension adjustments, and any spousal plan. Read CRA's RRSP guide.
A lower tax bracket is not enough. The tax on split income rules can tax family dividends at the highest rate unless an exception applies. Check ownership, work history and the proposed payment before counting on a saving. Read CRA's adult TOSI guidance.