The article explores the unique properties of rhenium disulfide (ReS₂), a semiconducting transition metal dichalcogenide, which exhibits electronic and vibrational decoupling between monolayers. Unlike other sTMDs, ReS₂ maintains a direct bandgap in both bulk and monolayer forms, with no variation in its Raman spectrum or optical absorption as the number of layers changes. This decoupling is attributed to the Peierls distortion of the 1T structure, which prevents ordered stacking and minimizes interlayer overlap. The study uses high-resolution transmission electron microscopy (HRTEM), electron diffraction, and density functional theory (DFT) calculations to confirm these findings. The results suggest that ReS₂ can serve as an ideal platform for studying two-dimensional physics without the need for monolayers, offering new opportunities in optoelectronics and photovoltaics.The article explores the unique properties of rhenium disulfide (ReS₂), a semiconducting transition metal dichalcogenide, which exhibits electronic and vibrational decoupling between monolayers. Unlike other sTMDs, ReS₂ maintains a direct bandgap in both bulk and monolayer forms, with no variation in its Raman spectrum or optical absorption as the number of layers changes. This decoupling is attributed to the Peierls distortion of the 1T structure, which prevents ordered stacking and minimizes interlayer overlap. The study uses high-resolution transmission electron microscopy (HRTEM), electron diffraction, and density functional theory (DFT) calculations to confirm these findings. The results suggest that ReS₂ can serve as an ideal platform for studying two-dimensional physics without the need for monolayers, offering new opportunities in optoelectronics and photovoltaics.