Synthesis and structural analysis of novel indole derivatives by XRD, spectroscopic and DFT studies - Tariq, Sobia; Raza, Abdul Rauf; Khalid, Muhammad; Rubab, Syeda Laila; Khan, Muhammad Usman; Ali, Akbar; Tahir, Muhammad Nawaz; Braga, Ataualpa Albert Carmo (Journal of Molecular Structure, 2020)