Background: The structure of the semimagic $_{50}\mathrm{Sn}$ isotopes were previously studied via measurements of $B(E2;{2}_{1}{}^{+}\ensuremath{\rightarrow}{0}_{1}{}^{+}$) and $g$ factors of ${2}_{1}{}^{+}$ states. The values of the $B(E2;{2}_{1}{}^{+}$) in the isotopes below midshell at $N$ = 66 show an enhancement in collectivity, contrary to predictions from shell-model calculations.Purpose: This work presents the first measurement of the $2{}_{1}{}^{+}$ and $4{}_{1}{}^{+}$ states' magnetic moments in the unstable neutron-deficient $^{110}\mathrm{Sn}$. The $g$ factors provide complementary structure information to the interpretation of the observed $B(E2)$ values.Methods: The $^{110}\mathrm{Sn}$ nuclei have been produced in inverse kinematics in an $\ensuremath{\alpha}$-particle transfer reaction from $^{12}\mathrm{C}$ to $^{106}\mathrm{Cd}$ projectiles at 390, 400, and 410 MeV. The $g$ factors have been measured with the transient field technique. Lifetimes have been determined from line shapes using the Doppler-shift attenuation method.Results: The $g$ factors of the ${2}_{1}{}^{+}$ and ${4}_{1}{}^{+}$ states in $^{110}\mathrm{Sn}$ are $g({2}_{1}{}^{+})$ = +0.29(11) and $g({4}_{1}{}^{+})$ = +0.05(14), respectively. In addition, the $g({4}_{1}{}^{+})$ = +0.27(6) in $^{106}\mathrm{Cd}$ has been measured for the first time. A line-shape analysis yielded $\ensuremath{\tau}{(}^{110}\mathrm{Sn};{2}_{1}{}^{+})$ = 0.81(10) ps and a lifetime of $\ensuremath{\tau}{(}^{110}\mathrm{Sn};{3}_{1}{}^{\ensuremath{-}})$ = 0.25(5) ps was calculated from the fully Doppler-shifted $\ensuremath{\gamma}$ line.Conclusions: No evidence has been found in $^{110}\mathrm{Sn}$ that would require excitation of protons from the closed $Z=50$ core.