In the title compound, C19H13ClN2, the dihedral angle formed by the imidazole core with the chlorophenyl and phenyl rings are 24.07 (4) and 67.24 (4)°, respectively.
Three new 4-methoxybenzoylthiourea derivatives namely N-phenyl-N'-4-methoxybenzoylthiourea (A), N-(2-methoxy-phenyl)-N'-4-methoxybenzoylthiourea (B) and N-(2-nitrophenyl)-N'-4-methoxybenzoylthiourea (C) has successfully synthesized and characterized by elemental analysis, Fourier Transform Infrared (FTIR), proton ( 1 H) and carbon ( 13 C) Nuclear Magnetic Resonance (NMR) spectroscopy. Result obtained for IR showed the presence of important bands of the compounds such as ν(N-H), ν(C=O), ν(C-N) and ν(C=S) which were observed at 3200 cm -1 , 1670 cm -1 , 1200 cm -1 and 700 cm -1 , respectively. The 1 H chemical shifts for CONH and CSNH had been observed around 9 ppm and 12 ppm, respectively. For the 13 C resonance, the signal of C=O and C=S had been observed at 180 ppm and 200 ppm, respectively. The efficiency of the synthesized compounds was investigated as corrosion inhibitor of mild steel in 1.0 M H 2 SO 4 by using linear polarization resistance (LPR) technique.
Key indicators: single-crystal X-ray study; T = 296 K; mean (C-C) = 0.005 Å; R factor = 0.043; wR factor = 0.111; data-to-parameter ratio = 15.6.The title compound, C 10 H 10 BrClN 2 OS, adopts a trans-cis conformation with respect to the position of the 3-chloropropanoyl and 4-bromophenyl groups, respectively, against the thiono C S bond across their C-N bonds. The benzene ring makes a dihedral angle of 9.55 (16) with the N 2 CS thiourea moiety. Intramolecular N-HÁ Á ÁO and C-HÁ Á ÁS hydrogen bonds occur. In the crystal, molecules are linked into chains along the c-axis direction by N-HÁ Á ÁS, C-HÁ Á ÁS and C-HÁ Á ÁO hydrogen bonds.
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