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Asha S, Thomas A, Suma S, K R, Sandhya K, Siddlingeshwar B, Sudarsanakumar M. STRUCTURAL STUDIES OF A NOVEL TAUTOMERIC SCHIFF BASE DERIVED FROM 4-(N,N’-DIETHYLAMINO)SALICYLALDEHYDE AND 2-AMINO-4-METHYL PHENOL: AN EXPERIMENTAL AND THEORETICAL STUDY. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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2
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Synthesis, structural characterization and in vitro cytotoxicity assessment of new mononuclear Cu(II) and Co(II) complexes against MDA–MB–231, HCC–1806 and HT–29 cancer cell lines. Polyhedron 2023. [DOI: 10.1016/j.poly.2022.116189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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3
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Hulushe ST, Malan FP, Hosten EC, Lobb KA, Khanye SD, Watkins GM. Photo-and thermoresponsive N-salicylideneaniline derivatives: solid-state studies and structural aspects. NEW J CHEM 2022. [DOI: 10.1039/d1nj03056f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Eight photo-and/or thermoresponsive salicylideneanilines were obtained by mechanosynthesis under solvent-free conditions and stabilized by external stimuli for their isolations in solid-state. Switching properties of these materials were investigated by various analytical techniques and spectroscopic data.
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Affiliation(s)
- Siya T. Hulushe
- Department of Chemistry, Rhodes University, P. O. Box 94, Makhanda 6139, South Africa
| | - Frederick P. Malan
- Department of Chemistry, University of Pretoria, 02 Lynwood Road, Hatfield, Pretoria 0002, South Africa
| | - Eric C. Hosten
- Department of Chemistry, Nelson Mandela University, Summerstrand, P. O. Box 77000, Gqeberha 6031, South Africa
| | - Kevin A. Lobb
- Department of Chemistry, Rhodes University, P. O. Box 94, Makhanda 6139, South Africa
| | - Setshaba D. Khanye
- Faculty of Pharmacy, Rhodes University, P. O. Box 94, Makhanda 6139, South Africa
| | - Gareth M. Watkins
- Department of Chemistry, Rhodes University, P. O. Box 94, Makhanda 6139, South Africa
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4
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Rodríguez MR, Espino GA, Piro OE, Echeverría GA, Parajón-Costa BS, González-Baró AC. The crystal structure and characterization of a co-product in the synthesis of a Schiff base give evidence of its zwitterionic nature in the solid state. NEW J CHEM 2022. [DOI: 10.1039/d1nj04537g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The zwitterionic form of a Schiff base in the solid state was found by the structural characterization of a coproduct and a mechanistic proposal of its formation.
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Affiliation(s)
- M. R. Rodríguez
- CEQUINOR (CONICET-CCT La Plata, UNLP), Bvd. 120 N°1465, 1900 La Plata, Argentina
| | - G. A. Espino
- Departamento de Química, Universidad de Burgos, Pza. Misael Bañuelos s/n, E-09001 Burgos, Spain
| | - O. E. Piro
- IFLP (CONICET-CCT La Plata, UNLP), CC 67, B1900AVV, La Plata, Argentina
| | - G. A. Echeverría
- IFLP (CONICET-CCT La Plata, UNLP), CC 67, B1900AVV, La Plata, Argentina
| | - B. S. Parajón-Costa
- CEQUINOR (CONICET-CCT La Plata, UNLP), Bvd. 120 N°1465, 1900 La Plata, Argentina
| | - A. C. González-Baró
- CEQUINOR (CONICET-CCT La Plata, UNLP), Bvd. 120 N°1465, 1900 La Plata, Argentina
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5
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Bouzayani N, Marque S, Djelassi B, Kacem Y, Marrot J, Ben Hassine B. Enantiopure Schiff bases of amino acid phenylhydrazides: impact of the hydrazide function on their structures and properties. NEW J CHEM 2018. [DOI: 10.1039/c7nj04597b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New chiral Schiff bases have been synthesized and characterized with an important contribution from quantum chemical calculations at the DFT level of theory. They have been evaluated for their physical and biological properties.
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Affiliation(s)
- Nadia Bouzayani
- Laboratoire de Synthèse Organique Asymétrique et Catalyse Homogène
- (UR 11ES56) Université de Monastir
- Faculté des Sciences de Monastir
- Monastir 5000
- Tunisia
| | - Sylvain Marque
- Université de Versailles
- Saint-Quentin-en-Yvelines
- Institut Lavoisier de Versailles (ILV)
- UMR CNRS 8180
- 78035 Versailles
| | - Brahim Djelassi
- Laboratoire des Maladies Transmissibles et Substances Biologiquement Actives
- Faculté de Pharmacie
- 5000 Monastir
- Tunisia
| | - Yakdhane Kacem
- Laboratoire de Synthèse Organique Asymétrique et Catalyse Homogène
- (UR 11ES56) Université de Monastir
- Faculté des Sciences de Monastir
- Monastir 5000
- Tunisia
| | - Jérôme Marrot
- Université de Versailles
- Saint-Quentin-en-Yvelines
- Institut Lavoisier de Versailles (ILV)
- UMR CNRS 8180
- 78035 Versailles
| | - Béchir Ben Hassine
- Laboratoire de Synthèse Organique Asymétrique et Catalyse Homogène
- (UR 11ES56) Université de Monastir
- Faculté des Sciences de Monastir
- Monastir 5000
- Tunisia
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6
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Mahmudov KT, Pombeiro AJL. Resonance-Assisted Hydrogen Bonding as a Driving Force in Synthesis and a Synthon in the Design of Materials. Chemistry 2016; 22:16356-16398. [PMID: 27492126 DOI: 10.1002/chem.201601766] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Indexed: 11/08/2022]
Abstract
Resonance-assisted hydrogen bonding (RAHB), a concept introduced by Gilli and co-workers in 1989, concerns a kind of intramolecular H-bonding strengthened by a conjugated π-system, usually in 6-, 8-, or 10-membered rings. This Review highlights the involvement of RAHB as a driving force in the synthesis of organic, coordination, and organometallic compounds, as a handy tool in the activation of covalent bonds, and in starting moieties for synthetic transformations. The unique roles of RAHB in molecular recognition and switches, E/Z isomeric resolution, racemization and epimerization of amino acids and chiral amino alcohols, solvatochromism, liquid-crystalline compounds, and in synthons for crystal engineering and polymer materials are also discussed. The Review can provide practical guidance for synthetic chemists that are interested in exploring and further developing RAHB-assisted synthesis and design of materials.
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Affiliation(s)
- Kamran T Mahmudov
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal. .,Department of Chemistry, Baku State University, Z. Xalilov Str. 23, Az 1148, Baku, Azerbaijan.
| | - Armando J L Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal.
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7
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Coordination properties of a Schiff base probe for Zn2+ ion in aqueous media having no Cu2+ ion interference. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.04.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Pis-Diez R, Echeverría GA, Piro OE, Jios JL, Parajón-Costa BS. A structural, spectroscopic and theoretical study of an o-vanillin Schiff base derivative involved in enol-imine and keto-amine tautomerism. NEW J CHEM 2016. [DOI: 10.1039/c5nj01039j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The potassium salt of the Schiff base derived from o-vanillin and taurine is involved in enol-imine (I) and keto-amine (II) tautomerism. Both tautomeric forms coexist in the crystal and they are stabilized by strong O–H⋯N and O⋯H–N intramolecular hydrogen bonds.
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Affiliation(s)
| | - Gustavo A. Echeverría
- Departamento de Física
- FCE (UNLP) and IFLP (CONICET, CCT-La Plata)
- CC 67
- La Plata
- Argentina
| | - Oscar E. Piro
- Departamento de Física
- FCE (UNLP) and IFLP (CONICET, CCT-La Plata)
- CC 67
- La Plata
- Argentina
| | - Jorge L. Jios
- Unidad PLAPIMU-LASEISIC (UNLP-CIC)
- Departamento de Química
- FCE (UNLP)
- La Plata
- Argentina
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9
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Jiménez-Sánchez A, Ortíz B, Ortiz Navarrete V, Farfán N, Santillan R. Two fluorescent Schiff base sensors for Zn2+: the Zn2+/Cu2+ion interference. Analyst 2015; 140:6031-9. [DOI: 10.1039/c5an00789e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
While theenol-iminetautomer inL1exhibits Zn2+/Cu2+ion interference, theketo-enaminetautomer inL2recognizes only Zn2+.
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Affiliation(s)
- Arturo Jiménez-Sánchez
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados del IPN
- CINVESTAV
- México
| | - Benjamín Ortíz
- Departamento de Biomedicina Molecular
- Centro de Investigación y de Estudios Avanzados del IPN
- CINVESTAV
- México
| | - Vianney Ortiz Navarrete
- Departamento de Biomedicina Molecular
- Centro de Investigación y de Estudios Avanzados del IPN
- CINVESTAV
- México
| | - Norberto Farfán
- Facultad de Química
- Departamento de Química Orgánica
- Universidad Nacional Autónoma de México
- México
| | - Rosa Santillan
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados del IPN
- CINVESTAV
- México
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10
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García-Merinos JP, López Y, González-Campos JB, Aviña-Verduzco JA, Del Río RE, Santillan R. Crystal structure of N-[(E)-(1,3-benzodioxol-5-yl)-methyl-idene]-4-chloro-aniline. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o1195-6. [PMID: 25484825 PMCID: PMC4257285 DOI: 10.1107/s1600536814022892] [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: 10/15/2014] [Accepted: 10/18/2014] [Indexed: 12/03/2022]
Abstract
In the title compound, C14H10ClNO2, obtained by the condensation of 4-chloroaniline and piperonal, the five-membered ring is almost planar (r.m.s. deviation = 0.023 Å) and the dihedral angle between the aromatic rings is 43.22 (14)°. In the crystal, a short O⋯Cl contact of 3.173 (2) Å is observed. The molecules are arranged into corrugated (010) layers.
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Affiliation(s)
- J Pablo García-Merinos
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, CP 58000, México
| | - Yliana López
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, CP 58000, México
| | - J Betzabe González-Campos
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, CP 58000, México
| | - Judit A Aviña-Verduzco
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, CP 58000, México
| | - Rosa E Del Río
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, CP 58000, México
| | - Rosa Santillan
- Departamento de Química, CINVESTAV-IPN, Apdo. Postal 14-740, 07000 México, D.F., México
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11
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Moghadam AJ, Omidyan R, Mirkhani V. Photophysics of a Schiff base: theoretical exploration of the excited-state deactivation mechanisms of N-salicilydenemethylfurylamine (SMFA). Phys Chem Chem Phys 2014; 16:2417-24. [DOI: 10.1039/c3cp54416h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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12
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Jiménez-Sánchez A, Rodríguez M, Métivier R, Ramos-Ortíz G, Maldonado JL, Réboles N, Farfán N, Nakatani K, Santillan R. Synthesis and crystal structures of a series of Schiff bases: a photo-, solvato- and acidochromic compound. NEW J CHEM 2014. [DOI: 10.1039/c3nj00895a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Schilf W, Kamieński B, Szady-Chełmieniecka A, Kołodziej B, Grech E, Zarzeczańska D, Wcisło A, Ossowski T. Structure investigation of intramolecular hydrogen bond in some substituted salicylaldehydes and 4-aminoantipyrine derivatives in solution and in the solid state. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 109:47-54. [PMID: 23501717 DOI: 10.1016/j.saa.2013.01.094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 01/23/2013] [Accepted: 01/28/2013] [Indexed: 06/01/2023]
Abstract
Seven imine derivatives obtained by condensation of appropriate aldehydes and salicylaldehydes with 4-aminoantipyrine were investigated in terms of intramolecular hydrogen bond structure. On the base of (1)H, (13)C and (15)N NMR measurements in solution and in the solid state we found out that all compounds which can form such structure exist as OH forms with strong H-bonds to nitrogen atom. The structure conclusions taken from NMR study were confirmed by pKa measurements. Surpassingly, the positions of protons in H-bridges only very slightly depend on the substituents in aldehyde used for condensation and on the phase (solution vs. solid state). The influence of antipyrine moiety seems to be the major factor defining H-bond structure.
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Affiliation(s)
- Wojciech Schilf
- Institute of Organic Chemistry, Polish Academy of Sciences, 44/52 Kasprzaka str., 01-224 Warsaw 42, POB 58, Poland.
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14
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Schilf W, Kamieński B, Užarević K. Nitrogen and carbon CPMAS NMR investigations of keto–enol tautomerism in asymmetric o-hydroxy Schiff bases. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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Rubčić M, Užarević K, Halasz I, Bregović N, Mališ M, Dilović I, Kokan Z, Stein RS, Dinnebier RE, Tomišić V. Desmotropy, polymorphism, and solid-state proton transfer: four solid forms of an aromatic o-hydroxy Schiff base. Chemistry 2012; 18:5620-31. [PMID: 22447516 DOI: 10.1002/chem.201103508] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Indexed: 11/06/2022]
Abstract
The Schiff base derived from salicylaldehyde and 2-amino-3-hydroxypyridine affords a diversity of solid forms, two polymorphic pairs of the enol-imino (D1 a and D1 b) and keto-amino (D2 a and D2 b) desmotropes. The isolated phases, identified by IR spectroscopy, X-ray crystallography, and (13)C cross-polarization/magnetic angle spinning (CP/MAS) NMR spectroscopy, display essentially planar molecular conformations characterized by strong intramolecular hydrogen bonds of the O-H⋅⋅⋅N (D1) or N-H⋅⋅⋅O (D2) type. A change in the position of the proton within this O⋅⋅⋅H⋅⋅⋅N system is accompanied by substantially different molecular conformations and, subsequently, by divergent supramolecular architectures. The appearance and interconversion conditions for each of the four phases have been established on the basis of a number of solution and solvent-free experiments, and evaluated against the results of computational studies. Solid phases readily convert into the most stable form (D1 a) upon exposure to methanol vapor, heating, or by mechanical treatment, and these transformations are accompanied by a change in the color of the sample. The course of thermally induced transformations has been monitored in detail by means of temperature-resolved powder X-ray diffraction and infrared spectroscopy. Upon dissolution, all forms equilibrate immediately, as confirmed by NMR and UV/Vis spectroscopy in several solvents, with the equilibrium shifted far towards the enol tautomer. This study reveals the significance of peripheral groups in the stabilization of metastable tautomers in the solid state.
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Affiliation(s)
- Mirta Rubčić
- Department of Chemistry, Faculty of Science, University of Zagreb, Croatia.
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16
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Germán-Acacio JM, Tlahuext H, Höpfl H. (E)-2-{[2-(2-Hy-droxy-ethyl-amino)-ethyl-imino]-meth-yl}phenol. Acta Crystallogr Sect E Struct Rep Online 2012; 67:o2849. [PMID: 22219892 PMCID: PMC3247587 DOI: 10.1107/s1600536811039997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 09/28/2011] [Indexed: 11/10/2022]
Abstract
The asymmetric unit of the title compound, C(11)H(16)N(2)O(2), contains two independent conformational isomers which show intra-molecular aromatic-imine O-H⋯N hydrogen bonds. In the crystal, neighboring mol-ecules are linked through inter-molecular aliphatic-aliphatic O-H⋯N, aliphatic-aromatic N-H⋯O and C-H⋯O inter-actions into hydrogen-bonded layers parallel to the ab plane.
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Affiliation(s)
- Juan M Germán-Acacio
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos. Av. Universidad 1001, CP 62209, Cuernavaca, Mexico
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17
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Martyniak A, Majerz I, Filarowski A. Peculiarities of quasi-aromatic hydrogen bonding. RSC Adv 2012. [DOI: 10.1039/c2ra20846f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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