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Phenazine and 10H-phenothiazine cocrystal stabilized by N-H···N and C-H···S hydrogen bonds Mehmood, Tahir Patel, Bhumiben Chandubhai Reddy, Jayarama Prakasha Co-crystal Phenazine Phenothiazine Hydrogen bonding X-ray crystallography Supramolecular assembly A 1:1 co-crystal of phenazine and phenothiazine was prepared. The crystal structure was determined by using a single crystal X-ray crystallography technique. Analysis of the crystal revealed that the molecular complex crystallizes in monoclinic P21/n space group, C12H8N2·C12H9NS, a = 9.068(2) Å, b = 8.872(2) Å, c = 23.935(4) Å, β = 92.16(4)°, V = 1924.1(6) Å3, Z = 4, T = 293(2) K, μ(MoKα) = 0.182 mm-1, Dcalc = 1.310 g/cm3, 8057 reflections measured (3.4° ≤ 2Θ ≤ 46.54°), 2751 unique (Rint = 0.0559, Rsigma = 0.0618) which were used in all calculations. The final R1 was 0.0548 (>2sigma(I)) and wR2 was 0.1029 (all data). The molecules recognize each other through N-H···N and C-H···N hydrogen bonds, thus producing a tetramer unit. These units further interact with one another via C-H···S hydrogen bonds. Atlanta Publishing House LLC 2022-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/plain https://www.eurjchem.com/index.php/eurjchem/article/view/2256 10.5155/eurjchem.13.2.230-233.2256 European Journal of Chemistry; Vol. 13 No. 2 (2022): June 2022; 230-233 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/2256/pdf_2256 https://www.eurjchem.com/index.php/eurjchem/article/view/2256/2716 Copyright (c) 2022 Authors