Vibrational Analysis of 5'-Methyl-6b,7,9,11a-tetrahydrospiro [chromeno [3', 4': 3,4] pyrrolo [1,2-] thiazole-11,3'-indoline]-2',6(6aH)-dione

S Pangajavalli, R Ranjithkumar, S Ramaswamy
Single Crystal b = 9.765 Å, c = 11.968Å, α= 112.62 o, β = 99.39 o , γ = 91.89 o and it belongs to Triclinic space group P-1. The compound was characterized by FT-IR and Raman analyses. The presence of different functional groups and the nature of their vibrations were identified in experimental vibrational studies through Infra-red and Raman measurements in the range of 4000-400 cm-1 .