The ${}^{242}\mathrm{Pu}$(${}^{50}\mathrm{Ti}, 3n$)${}^{289}\mathrm{Lv}$ reaction has been studied at the gas-filled separator DGFRS-2 at the SHE Factory at Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research. The experiment was carried out at the excitation energy of the compound nucleus ${}^{292}\mathrm{Lv} E^{*}=36$ MeV, 5 MeV lower than in Oganessian et al. [Phys. Rev. C 112, 014603 (2025)], to measure the ${}^{242}\mathrm{Pu}+{}^{50}\mathrm{Ti}$ reaction excitation function and to determine the decay properties of new Lv isotopes with better accuracy. We have registered one decay chain of ${}^{289}\mathrm{Lv}$ and descendant nuclei with properties that are in agreement with those previously measured in the three decay chains of ${}^{289}\mathrm{Lv}$. The spontaneous fission of ${}^{281}\mathrm{Cn}$ was observed in this chain for the first time. A decline in $E^{*}$ led to a drop of the total fusion-evaporation cross section by about an order of magnitude, from $540\begin{array}{c}+410\\ -250\end{array}$ fb to $54\begin{array}{c}+141\\ -46\end{array}$ fb. Such a decrease is different from the results of recent calculations of the excitation functions of reactions ${}^{249}\mathrm{Bk}, {}^{249}\mathrm{Cf}+{}^{50}\mathrm{Ti}$ predicting a maximum cross section for the $3n$ channel at $E^{*}\approx 31–36\mathrm{MeV}$. From the analysis of theoretical and experimental data, it follows that the maxima of the excitation functions of the reactions of ${}^{50}\mathrm{Ti}$ with ${}^{249}\mathrm{Bk}$ and ${}^{249}\mathrm{Cf}$ will be close to that of the ${}^{242}\mathrm{Pu}+{}^{50}\mathrm{Ti}$ reaction.

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• Alpha decay
• Fission
• Low & intermediate energy heavy-ion reactions
• Nuclear fusion
• Nuclear reactions
• Transfer reactions
• A ≥ 220