O-4-Acetylamino-benzenesulfonylated pyrimidine derivatives: synthesis, SC-XRD, DFT analysis and electronic behaviour investigation - Khalid, Muhammad; Ali, Akbar; Haq, Sadia; Tahir, Muhammad Nawaz; Iqbal, Javed; Braga, Ataualpa Albert Carmo; Ashfaq, Muhammad; Akhtar, Samee Ul Hassan (Journal of Molecular Structure, 2020)