High–resolution infrared spectra of the D₂S molecule were experimentally recorded with a Bruker IFS 125HR Fourier transform infrared spectrometer and theoretically analyzed in the region of 700 – 1800 cm${}^{-1},$ where the ν₂ and 2ν₂ bands are located. For the first time, transitions were assigned to the 2ν₂ and $2{\nu }_2-{\nu }_2$ bands of the D₂³²S and D₂³⁴S isotopologues. For the ground vibrational state and the ν₂ band of D₂³⁴S, the spectral information was considerably extended in comparison with preceding works. For the first time, transitions belonging to the rare D₂³³S hydrogen sulfide species were assigned to the ν₂ and 2ν₂ bands, as well as a rotational structure of the ground vibrational state of D₂³³S was determined on the basis of experimental values of the ground state combination differences (maximum values of quantum numbers for used ground state combination differences were $J^{\text{max}}=19,$ $K_a^{\text{max}}=8,$ $\Delta J^{\text{max}}=2,$ $\Delta K_a^{\text{max}}=2$). Sets of spectroscopic parameters of the Watson hamiltonian in $A-$reduction and $I^r-$representation was determined for the (010) and (020) vibrational states of all three discussed species and for the ground vibrational states of D₂³⁴S and D₂³³S from the weighted fit of parameters of this hamiltonian. The d_rms of reproduction of the initial experimental data for all nine vibrational states (three vibrational states for any species) is not far from $1\times {10}^{-4}$ cm${}^{-1}$ which is close to experimental errors in line positions.

D ₂ S分子的高分辨率红外光谱通过Bruker IFS 125HR傅立叶变换红外光谱仪进行了实验记录，并在700 – 1800 cm范围内进行了理论分析${}^{-\mathrm{1个}}，$其中ν ₂和2 ν ₂频带位于。首次，转换被分配到2 ν ₂和$2{\nu }_2-{\nu }_2$D ₂ ³² S和D ₂ ³⁴ S的同位素带。对于接地振动状态和ν ₂ d的带₂ ³⁴ S，光谱信息与前述作品比较是大大延长。首次，属于稀有d跃迁_2个³³小号硫化氢物种被分配到ν ₂和2个ν ₂条带，以及d的地面振动状态的旋转结构₂ ³³S是根据基态组合差的实验值确定的（所用基态组合差的量子数最大值为 ${Ĵ}^{\text{最高}}=19，$ ${ķ}_{\mathrm{一种}}^{\text{最高}}=8，$ $\Delta {Ĵ}^{\text{最高}}=2，$ $\Delta {ķ}_{\mathrm{一种}}^{\text{最高}}=2$）。沃森哈密顿谱的光谱参数集$\mathrm{一种}-$减少和 ${\mathrm{一世}}^{\mathrm{[R}}-$根据该哈密尔顿参数的加权拟合，确定了所讨论的所有三个物种的（010）和（020）振动状态以及D ₂ ³⁴ S和D ₂ ³³ S的地面振动状态。所述d_均方根为所有九个振动状态（任何物种3个振）的初始实验数据的再现是不是从远$\mathrm{1个}\times {10}^{-4}$ 厘米${}^{-\mathrm{1个}}$ 这接近在线位置的实验误差。