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Zouitini A, Faizi MSH, Ouzidan Y, Ouazzani Chahdi F, Marrot J, Prim D, Dege N, Mashrai A. Synthesis, crystal structure at 219 K and Hirshfeld surface analyses of 1,4,6-tri-methyl-quinoxaline-2,3(1 H,4 H)-dione monohydrate. Acta Crystallogr E Crystallogr Commun 2020; 76:1296-1301. [PMID: 32844017 PMCID: PMC7405578 DOI: 10.1107/s2056989020009573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 07/13/2020] [Indexed: 11/25/2022]
Abstract
The asymmetric unit of the title compound, C11H12N2O2·H2O, contains a mol-ecule of 1,4,6-trimethyl-1,4-di-hydro-quinoxaline-2,3-dione and a solvent water mol-ecule. Four atoms of the benzene ring are disordered over two sets of sites in a 0.706 (7):0.294 (7) ratio while the N-bound methyl groups are rotationally disordered with occupancy ratios of 0.78 (4):0.22 (4) and 0.76 (5):0.24 (5). In the crystal, mol-ecules are linked by O-H⋯O and C-H⋯O hydrogen bonds into layers lying parallel to (10). The Hirshfeld surface analysis indicates that the most important contributions to the packing arrangement are due to H⋯H (51.3%) and O⋯H/H⋯O (28.6%) inter-actions. The mol-ecular structure calculated by density functional theory is compared with the experimentally determined mol-ecular structure, and the HOMO-LUMO energy gap has been calculated.
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Affiliation(s)
- Ayman Zouitini
- Laboratoire de Chimie Organique Appliquée, Université Sidi Mohamed Ben Abdallah, Faculté des Sciences et Techniques, BP 2202, Fez, Morocco
| | - Md. Serajul Haque Faizi
- Department of Chemistry, Langat Singh College, B.R.A. Bihar University, Muzaffarpur, Bihar-842001, India
| | - Younes Ouzidan
- Laboratoire de Chimie Physique et Chimie Bio-organique, Faculté des Sciences et Techniques Mohammedia, Université Hassan II, Casablanca, BP 146, 28800, Mohammedia, Morocco
| | - Fouad Ouazzani Chahdi
- Laboratoire de Chimie Organique Appliquée, Université Sidi Mohamed Ben Abdallah, Faculté des Sciences et Techniques, BP 2202, Fez, Morocco
| | - Jérôme Marrot
- Institut Lavoisier de Versailles, UVSQ, CNRS, Université Paris-Saclay, 78035 Versailles, France
| | - Damien Prim
- Institut Lavoisier de Versailles, UVSQ, CNRS, Université Paris-Saclay, 78035 Versailles, France
| | - Necmi Dege
- Department of Physics, Faculty of Arts and Sciences, Ondokuz Mayıs University, Samsun, 55200, Turkey
| | - Ashraf Mashrai
- Department of Pharmacy, University of Science and Technology, Ibb Branch, Ibb, Yemen
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Faizi MSH, Osório FA, Valverde C. Synthesis, crystal structure, spectroscopic and nonlinear optical properties of organic salt: A combined experimental and theoretical study. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Faizi MSH, Parashchenko Y. Crystal structure of 2-amino-1,3-di-bromo-6-oxo-5,6-di-hydro-pyrido[1,2-a]quinoxalin-11-ium bromide monohydrate. Acta Crystallogr E Crystallogr Commun 2015; 71:1332-5. [PMID: 26594504 PMCID: PMC4645018 DOI: 10.1107/s2056989015018253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 09/29/2015] [Indexed: 11/11/2022]
Abstract
In the title hydrated salt, C12H8Br2N3O(+)·Br(-)·H2O, which was synthesized by the reaction of the pyridine derivative Schiff base N (1),N (4)-bis-(pyridine-2-yl-methyl-ene)benzene-1,4-di-amine with bromine, the asymmetric unit contains a 2-amino-1,3-di-bromo-6-oxo-5,6-di-hydro-pyrido[1,2-a]quinoxalin-11-ium cation, with a protonated pyridine moiety, a bromide anion and a water mol-ecule of solvation. The cation is non-planar with the di-bromo-substituted benzene ring, forming dihedral angles of 24.3 (4) and 11.5 (4)° with the fused pyridine and pyrazine ring moieties, respectively. In the crystal, the cations are linked through a centrosymmetric hydrogen-bonded cyclic R 4 (2)(8) Br2(H2O)2 unit by N-H⋯Br, N-H⋯O and O-H⋯Br hydrogen bonds, forming one-dimensional ribbons extending along b, with the planes of the cations lying parallel to (100).
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Affiliation(s)
- Md. Serajul Haque Faizi
- Department of Chemistry, College of Science, Sultan Qaboos University, PO Box 36 Al-Khod 123, Muscat, Sultanate of , Oman
| | - Yuliia Parashchenko
- National Taras Shevchenko University, Department of Chemistry, Volodymyrska str. 64, 01601 Kiev, Ukraine
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