Unraveling the impact of hydrogen bonding and C-H ... π(CN) interactions in crystal engineering of cyclic aminobenzonitriles: A combined X-ray crystallographic and computational investigation ...

被引:8
|
作者
Zaib, Sumera [1 ]
Ibrar, Aliya [2 ]
Khan, Imtiaz [3 ]
Gomila, Rosa M. [4 ]
Tariq, Muhammad Umair [5 ]
Simpson, Jim [6 ]
McAdam, Christopher John [6 ]
Alrbyawi, Hamad [7 ]
Pashameah, Rami Adel [8 ]
Alzahrani, Eman [9 ]
Farouk, Abd-ElAziem [10 ]
Frontera, Antonio [4 ]
机构
[1] Univ Cent Punjab, Fac Sci & Technol, Dept Basic & Appl Chem, Lahore 54590, Pakistan
[2] Univ Haripur, Fac Phys & Appl Sci, Dept Chem, KPK 22620, Pakistan
[3] Univ Manchester, Manchester Inst Biotechnol, Dept Chem, 131 Princess St, Manchester M17DN, England
[4] Univ Illes Balears, Dept Quim, Crta Valldemossa Km 7-5 Baleares, Palma De Mallorca 07122, Spain
[5] Chartered Univ, Forman Christian Coll, Fac Nat Sci, Dept Chem, Lahore 54600, Pakistan
[6] Univ Otago, Dept Chem, POB 56, Dunedin 9054, New Zealand
[7] Taibah Univ, Coll Pharm, Pharmaceut & Pharmaceut Technol Dept, Medina 42353, Saudi Arabia
[8] Umm Al Qura Univ, Fac Appl Sci, Dept Chem, Mecca 24230, Saudi Arabia
[9] Taif Univ, Coll Sci, Dept Chem, POB 11099, Taif 21944, Saudi Arabia
[10] Taif Univ, Coll Sci, Dept Biotechnol, POB 11099, Taif 21944, Saudi Arabia
关键词
Nitrile; Noncovalent interactions; Hydrogen bonding; Aromatic contacts; DFT calculations; QTAIM analysis; NONCOVALENT INTERACTIONS; PI INTERACTIONS; NITRILE; REACTIVITY; COORDINATION; HIGHLIGHTS; MECHANISMS; CYSTEINE; SCAFFOLD; DENSITY;
D O I
10.1016/j.molstruc.2022.134387
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The essential role of organic crystals in drug development represents a significant research area and remains enduringly topical within the pharmaceutical industry. In the present study, four cyclic aminobenzonitriles 3a-d were prepared through the nucleophilic aromatic substitution reaction of 4-fluorobenzonitrile with various cyclic amines. The synthesized compounds were obtained in moderate to good yields and structurally characterized by FTIR, NMR spectroscopy, mass spectrometry and X-ray crystallography. The crystal packing of these compounds predominantly involves the use of hydro-gen bonding interactions (C-H...N, C-H...S, C-H...O) and aromatic contacts (C-H...pi(ring & CN), pi...pi) to govern the complex structural topology. These noncovalent interactions were further evaluated by molecular electrostatic potential (MEP) surface analysis and DFT energy calculations confirming the importance of pi-stacking and CH...pi interactions, either involving the arene or the pi-system of the cyano groups. These interactions have been further characterized using the QTAIM/NCIplot computational tool. (c) 2022 Elsevier B.V. All rights reserved.
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页数:9
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