Symmetry analysis of Raman spectra of crystals based on angular dependencies

Suggested a method to reconstruct the Raman scattering tensor by studying the angular dependences of Raman line intensities in tiny unoriented microcrystals. The method was verified on well-known calomel Hg2Cl2 model crystals. The spectral line phase-indicators in the Raman spectra reveal different symmetry types of DUT-8 (Ni) metal-organic framework crystals in the open pores and closed pores phases. A technique can be used to reconstruct the Raman scattering tensor of any unoriented crystalline samples.