The hydration energy of an ion largely resides within the first few layers of water molecules in its hydration shell. Hence, it is  important to understand the transformation of water properties, such as hydrogen-bonding, intermolecular vibrational coupling, and librational freedom in the hydration shell of ions. We investigated these properties in the hydration shell of mono- (Cl⁻ and I⁻) and bivalent (SO₄²⁻ and CO₃²⁻) anions by using Raman multivariate curve resolution (Raman- MCR) spectroscopy in the OH stretch, HOH bend, and [bend+librational] combination bands of water. Raman-MCR of aqueous Na-salt (NaCl, NaI, Na₂SO₄, and Na₂CO₃) solutions provides ioncorrelated spectra (IC-spectrum) which predominantly bear the vibrational characteristics of water in the hydration shell of respective anions. Comparison of these IC-spectra with the Raman spectrum of bulk water in different spectral regions reveals that the water is vibrationally decoupled with its neighbors in the hydration shell. Hydrogen-bond strength and librational freedom also vary with the nature of anion: hydrogen-bond strength, for example, decreases as CO₃ ²⁻ > SO₄²⁻ > bulk water ≈ Cl⁻ > I⁻; and the librational freedom increases as CO₃ ²⁻ ≈ SO4 ²⁻ < bulk water < Cl⁻ < I⁻. It is believed that these  structural perturbations influence the dynamics of coherent energy transfer and librational reorientation of water in the hydration shell of anions