methoxy/methacrylate-rich organic-inorganic hybrid material
General assessment- The assignment of the 1045 cm⁻¹ band to alkaline earth metal species (e.g., calcium) is supported by direct literature [2].
- The carbonyl assignments are corroborated by multiple literature sources.
- The intense band at 1707 cm⁻¹ is attributable to carbonyl C=O stretching, consistent with ester or ketone groups and supported by numerous direct literature assignments.
The top library match is calcium carbonate, an inorganic material, yet the dominant spectral features are organic. This indicates that the sample is not pure calcium carbonate, and a simple library identification is misleading.