Can you describe why exactly you can't get either of these spectra? Filling the solution in a cuvette and putting that in the spectrometer should be straightforward, so there has to be another limitation you didn't tell us about yet.

Dear Lamthaka Willingson you can get FTIR spectra of any type of liquid sample you can search any commercial analytical labs surrounding by your local area.

Analyzing carboplatin with Raman and FTIR spectroscopy may pose difficulties when dealing with a sterile water-based solution as the presence of water can potentially mask or disrupt the spectral information. One possible option is to separate carboplatin from the aqueous solution by using lyophilization or solvent evaporation which will result in a solid form that is better suited for Raman and FTIR analysis. If it is not possible to isolate carboplatin then obtaining it in tablet or powder form somehow could greatly enhance your capacity to gather clear spectral data. carboplatin is not often found in pill form because it is primarily used as an injectable medication but if you can get into a pharmaceutical laboratory you might try to crystallize the carboplatin from the solution by evaporating the solvent in a controlled manner. This solidified version would be much easier for spectroscopic analysis.