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Lobo-Checa J, Rodríguez SJ, Hernández-López L, Herrer L, Passeggi MCG, Cea P, Serrano JL. Discarding metal incorporation in pyrazole macrocycles and the role of the substrate on single-layer assemblies. NANOSCALE 2024; 16:7093-7101. [PMID: 38497989 DOI: 10.1039/d3nr03773h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Pyrazole derivatives are key in crystal engineering and liquid crystal fields and thrive in agriculture, pharmaceutical, or biomedicine industries. Such versatility relies in their supramolecular bond adaptability when forming hydrogen bonds or metal-pyrazole complexes. Interestingly, the precise structure of pyrazole-based macrocycles forming widespread porous structures is still unsolved. We bring insight into such fundamental question by studying the self-assembled structures of a bis-pyrazole derivative sublimed in ultra-high-vacuum conditions (without solvents) onto the three (111) noble metal surfaces. By means of high-resolution scanning tunneling microscopy that is validated by gas phase density functional theory calculations, we find a common hexagonal nanoporous network condensed by triple hydrogen bonds at the molecule-metal interface. Such assembly is disrupted and divergent after annealing: (i) on copper, the molecular integrity is compromised leading to structural chaos, (ii) on silver, an incommensurate new oblique structure requiring molecular deprotonation is found and, (iii) on gold, metal-organic complexes are promoted yielding irregular chain structures. Our findings confirm the critical role of these metals on the different pyrazole nanoporous structure formation, discarding their preference for metal incorporation into the connecting nodes whenever there is no solvent involved.
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Affiliation(s)
- Jorge Lobo-Checa
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain.
- Departamento de Física de la Materia Condensada, Universidad de Zaragoza, E-50009 Zaragoza, Spain
- Laboratorio de Microscopias Avanzadas, Universidad de Zaragoza, E-50018, Zaragoza, Spain
| | - Sindy Julieth Rodríguez
- Instituto de Física del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas y Universidad Nacional del Litoral (IFIS-Litoral, CONICET-UNL), Santa Fe, Argentina
| | - Leyre Hernández-López
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain.
- Departamento de Física de la Materia Condensada, Universidad de Zaragoza, E-50009 Zaragoza, Spain
| | - Lucía Herrer
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain.
- Laboratorio de Microscopias Avanzadas, Universidad de Zaragoza, E-50018, Zaragoza, Spain
| | - Mario C G Passeggi
- Instituto de Física del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas y Universidad Nacional del Litoral (IFIS-Litoral, CONICET-UNL), Santa Fe, Argentina
- Departamento de Física, Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Pilar Cea
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain.
- Laboratorio de Microscopias Avanzadas, Universidad de Zaragoza, E-50018, Zaragoza, Spain
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, E-50009 Zaragoza, Spain
| | - José Luis Serrano
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain.
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Zaragoza, E-50009 Zaragoza, Spain
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Baletska S, Techert S, Velazquez-Garcia JDJ. Crystal structure of 2-methyl-1 H-imidazol-3-ium 3,5-di-carb-oxy-benzoate. Acta Crystallogr E Crystallogr Commun 2023; 79:1088-1092. [PMID: 37936847 PMCID: PMC10626955 DOI: 10.1107/s2056989023009209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/19/2023] [Indexed: 11/09/2023]
Abstract
The structure of the title salt, C4H7N2 +·C9H5O6 - (1), is reported. The compound is built from a protonated 2-methyl-imidazole and a singly deprotonated trimesic acid. Detailed analysis of bond distances and angles for both ions reveals subtle differences compared with their neutral mol-ecule counterpart. Analysis of the crystal packing in compound 1 reveals the formation of undulating chains by the ions through hydrogen bonding. The chains stack along the b axis through π-π inter-actions and inter-connect with other chains in an out-of-phase arrangement along the ac plane through further hydrogen-bonding inter-actions.
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Affiliation(s)
- Sofiia Baletska
- School of Physics, V. N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv 61022, Ukraine
| | - Simone Techert
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- Institut für Röntgenphysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, Göttingen, 37077, Germany
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Singh S, Kaushal S, Kaur J, Kaur G, Mittal SK, Singh PP. CaFu MOF as an efficient adsorbent for simultaneous removal of imidacloprid pesticide and cadmium ions from wastewater. CHEMOSPHERE 2021; 272:129648. [PMID: 33485037 DOI: 10.1016/j.chemosphere.2021.129648] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/30/2020] [Accepted: 01/09/2021] [Indexed: 05/16/2023]
Abstract
Heavy metal ions and pesticides are the noteworthy toxic substances which must be removed from contaminated water for safeguarding public health. The higher levels of these substances in natural water may adversely affect the human health, climate and the eco-framework. The adsorptive removal of hazardous constituents employing metal organic frameworks has drawn considerable attention of researchers during the last decade. From this point of view, single crystal of calcium fumarate [Ca(C4H4O4)1.5 (H2O)(CH3OH)2] has been developed and analyzed by single crystal X-ray crystallography which confirmed the formation of 3-D metal organic frameworks (MOFs). The synthesized MOFs was employed for simultaneous adsorptive removal of imidacloprid, a high consumption pesticide, and highly toxic Cd (II) from aqua ecosystem. The effect of variation in experimental conditions such as solution pH, adsorbent dosage, contact time, initial concentration and temperature on adsorption was systematically evaluated. Both the imidacloprid and Cd(II) exhibited maximum adsorption at pH 6.5 and 7.8, respectively. The equilibrium empirical data was fitted into Langmuir, Freundlich and Temkin isotherms. The adsorption capacity of CaFu MOFs was observed to be 467.23 and 781.2 mg g-1 for imidacloprid and cadmium ions, respectively. The adsorbed pollutants were desorbed from the adsorbent using dilute HCl, and the material was reused for five adsorption-desorption cycles without any appreciable loss of adsorption capacity. Therefore, the 3-D CaFu MOFs could be utilized as a novel material for adsorptive removal of imidacloprid pesticide as well as Cd (II) from wastewater.
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Affiliation(s)
- Sandeep Singh
- CSIC Department, Post Graduate Institute of Medical Education and Research(PGIMER), Chandigarh, India
| | - Sandeep Kaushal
- Department of Chemistry, Sri Guru Granth Sahib World University, Fatehgarh Sahib, Punjab, India.
| | - Jasmeen Kaur
- Department of Chemistry, Sri Guru Granth Sahib World University, Fatehgarh Sahib, Punjab, India
| | - Gurmeet Kaur
- Department of Chemistry, Sri Guru Granth Sahib World University, Fatehgarh Sahib, Punjab, India
| | - Susheel Kumar Mittal
- Department of Chemistry & Biochemistry, Thapar Institute of Engineering and Technology, Patiala, India
| | - Prit Pal Singh
- Department of Chemistry, Sri Guru Granth Sahib World University, Fatehgarh Sahib, Punjab, India.
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Zhang X, Chen S, Wu Y, Jin S, Wang X, Wang Y, Shang F, Chen K, Du J, Shu Q. A novel cocrystal composed of CL-20 and an energetic ionic salt. Chem Commun (Camb) 2018; 54:13268-13270. [DOI: 10.1039/c8cc06540c] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel nitroamine/energetic ionic salt cocrystal explosive composed of CL-20 and 1-AMTN in a 1 : 1 molar ratio was discovered and characterized. It shows an appropriate explosive power and good mechanical sensitivity relative to RDX currently in use.
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Affiliation(s)
- Xiaopeng Zhang
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
- Research Institute of Gansu Yinguang Chemical Industry Group
| | - Shusen Chen
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Yige Wu
- Research Institute of Gansu Yinguang Chemical Industry Group
- Baiyin 730900
- China
| | - Shaohua Jin
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Xiaojun Wang
- Research Institute of Gansu Yinguang Chemical Industry Group
- Baiyin 730900
- China
| | - Yuqiao Wang
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Fengqin Shang
- Research Institute of Gansu Yinguang Chemical Industry Group
- Baiyin 730900
- China
| | - Kun Chen
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Junyi Du
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Qinghai Shu
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
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Jotani MM, Syed S, Halim SNA, Tiekink ERT. 2-({[(Pyridin-1-ium-2-ylmeth-yl)carbamo-yl]form-amido}-meth-yl)pyridin-1-ium bis-(3,5-di-carb-oxy-benzoate): crystal structure and Hirshfeld surface analysis. Acta Crystallogr E Crystallogr Commun 2016; 72:241-8. [PMID: 26958398 PMCID: PMC4770948 DOI: 10.1107/s2056989016000980] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 01/16/2016] [Indexed: 11/11/2022]
Abstract
The asymmetric unit of the title salt, C14H16N4O2 (2+)·2C9H5O6 (-), comprises half a dication, being located about a centre of inversion, and one anion, in a general position. The central C4N2O2 group of atoms in the dication are almost planar (r.m.s. deviation = 0.009 Å), and the carbonyl groups lie in an anti disposition to enable the formation of intra-molecular amide-N-H⋯O(carbon-yl) hydrogen bonds. To a first approximation, the pyridinium and amide N atoms lie to the same side of the mol-ecule [Npy-C-C-Namide torsion angle = 34.8 (2)°], and the anti pyridinium rings are approximately perpendicular to the central part of the mol-ecule [dihedral angle = 68.21 (8)°]. In the anion, one carboxyl-ate group is almost coplanar with the ring to which it is connected [Cben-Cben-Cq-O torsion angle = 2.0 (3)°], whereas the other carboxyl-ate and carb-oxy-lic acid groups are twisted out of the plane [torsion angles = 16.4 (3) and 15.3 (3)°, respectively]. In the crystal, anions assemble into layers parallel to (10-4) via hy-droxy-O-H⋯O(carbon-yl) and charge-assisted hy-droxy-O-H⋯O(carboxyl-ate) hydrogen bonds. The dications are linked into supra-molecular tapes by amide-N-H⋯O(amide) hydrogen bonds, and thread through the voids in the anionic layers, being connected by charge-assisted pyridinium-N-O(carboxyl-ate) hydrogen bonds, so that a three-dimensional architecture ensues. An analysis of the Hirshfeld surface points to the importance of O-H⋯O hydrogen bonding in the crystal structure.
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Affiliation(s)
- Mukesh M. Jotani
- Department of Physics, Bhavan’s Sheth R. A. College of Science, Ahmedabad, Gujarat 380 001, India
| | - Sabrina Syed
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | | | - Edward R. T. Tiekink
- Centre for Crystalline Materials, Faculty of Science and Technology, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
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