1
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Podda E, Aragoni MC, Caltagirone C, De Filippo G, Garau A, Lippolis V, Mancini A, Pintus A, Orton JB, Coles SJ, Arca M. Crystal structure of 4,4'-(disulfanedi-yl)dipyridinium chloride triiodide. Acta Crystallogr E Crystallogr Commun 2024; 80:641-644. [PMID: 38845723 PMCID: PMC11151313 DOI: 10.1107/s2056989024004213] [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: 03/20/2024] [Accepted: 05/07/2024] [Indexed: 06/09/2024]
Abstract
4,4'-(Disulfanedi-yl)dipyridinium chloride triiodide, C10H10N2S2 2+·Cl-·I3 -, (1) was synthesized by reaction of 4,4'-di-pyridyl-disulfide with ICl in a 1:1 molar ratio in di-chloro-methane solution. The structural characterization of 1 by SC-XRD analysis was supported by elemental analysis, FT-IR, and FT-Raman spectroscopic measurements.
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Affiliation(s)
- Enrico Podda
- Centro Servizi di Ateneo per la Ricerca (CeSAR), Università degli Studi di Cagliari, S.S. 554 bivio Sestu, Monserrato, 09042 Cagliari, Italy
| | - M. Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio Sestu, Monserrato, 09042 Cagliari, Italy
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio Sestu, Monserrato, 09042 Cagliari, Italy
| | - Greta De Filippo
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio Sestu, Monserrato, 09042 Cagliari, Italy
| | - Alessandra Garau
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio Sestu, Monserrato, 09042 Cagliari, Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio Sestu, Monserrato, 09042 Cagliari, Italy
| | - Annalisa Mancini
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio Sestu, Monserrato, 09042 Cagliari, Italy
| | - Anna Pintus
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio Sestu, Monserrato, 09042 Cagliari, Italy
| | - James B. Orton
- UK National Crystallography Service, School of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - Simon J. Coles
- UK National Crystallography Service, School of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio Sestu, Monserrato, 09042 Cagliari, Italy
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2
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Aragoni MC, Podda E, Chaudhary S, Bhasin AKK, Bhasin KK, Coles SJ, Orton JB, Isaia F, Lippolis V, Pintus A, Slawin AMZ, Woollins JD, Arca M. An Experimental and Theoretical Insight into I 2 /Br 2 Oxidation of Bis(pyridin-2-yl)Diselane and Ditellane. Chem Asian J 2023; 18:e202300836. [PMID: 37843415 DOI: 10.1002/asia.202300836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/12/2023] [Accepted: 10/12/2023] [Indexed: 10/17/2023]
Abstract
The reactivity between bis(pyridin-2-yl)diselane o Py2 Se2 and ditellane o Py2 Te2 (L1 and L2, respectively; o Py=pyridyn-2-yl) and I2 /Br2 is discussed. Single-crystal structure analysis revealed that the reaction of L1 with I2 yielded [(HL1+ )(I- )⋅5/2I2 ]∞ (1) in which monoprotonated cations HL1+ template a self-assembled infinite pseudo-cubic polyiodide 3D-network, while the reaction with Br2 yielded the dibromide Ho PySeII Br2 (2). The oxidation of L2 with I2 and Br2 yielded the compounds Ho PyTeII I2 (3) and Ho PyTeIV Br4 (6), respectively, whose structures were elucidated by X-ray diffraction analysis. FT-Raman spectroscopy measurements are consistent with a 3c-4e description of all the X-Ch-X three-body systems (Ch=Se, Te; X=Br, I) in compounds 2, 3, Ho PyTeII Br2 (5), and 6. The structural and spectroscopic observations are supported by extensive theoretical calculations carried out at the DFT level that were employed to study the electronic structure of the investigated compounds, the thermodynamic aspects of their formation, and the role of noncovalent σ-hole halogen and chalcogen bonds in the X⋅⋅⋅X, X⋅⋅⋅Ch and Ch⋅⋅⋅Ch interactions evidenced structurally.
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Affiliation(s)
- M Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042, Monserrato (Cagliari), Italy
| | - Enrico Podda
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042, Monserrato (Cagliari), Italy
- Centro Servizi di Ateneo per la Ricerca (CeSAR), Università degli Studi di Cagliari, S.S. 554 bivio Sestu, 09042, Monserrato (Cagliari), Italy
| | - Savita Chaudhary
- Department of Chemistry, Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India
| | - Aman K K Bhasin
- Department of Chemistry, Amity University, Sector 82 A, Mohali, Punjab-140306, India
| | - Kuldip K Bhasin
- Department of Chemistry, Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India
| | - Simon J Coles
- UK National Crystallography Service, School of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - James B Orton
- UK National Crystallography Service, School of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042, Monserrato (Cagliari), Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042, Monserrato (Cagliari), Italy
| | - Anna Pintus
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042, Monserrato (Cagliari), Italy
| | - Alexandra M Z Slawin
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife, KY16 9ST, UK
| | - J Derek Woollins
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife, KY16 9ST, UK
- Department of Chemistry, Khalifa University, Abu Dhabi, 127788, United Arab Emirates
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042, Monserrato (Cagliari), Italy
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3
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Acebedo-Martínez FJ, Alarcón-Payer C, Verdugo-Escamilla C, Martín J, Frontera A, Domínguez-Martín A, Gómez-Morales J, Choquesillo-Lazarte D. Rational Coformer Selection in the Development of 6-Propyl-2-thiouracil Pharmaceutical Cocrystals. Pharmaceuticals (Basel) 2023; 16:ph16030370. [PMID: 36986470 PMCID: PMC10055029 DOI: 10.3390/ph16030370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 02/20/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023] Open
Abstract
Pharmaceutical multicomponent solids have proved to efficiently modulate the physicochemical properties of active pharmaceutical ingredients. In this context, polyphenols are interesting coformers for designing pharmaceutical cocrystals due to their wide safety profile and interesting antioxidant properties. The novel 6-propyl-2-thiouracil multicomponent solids have been obtained by mechanochemical synthesis and fully characterized by powder and single-crystal X-ray diffraction methods. The analysis of supramolecular synthons has been further performed with computational methods, with both results revealing a robust supramolecular organization influenced by the different positions of the hydroxyl groups within the polyphenolic coformers. All novel 6-propyl-2-thiouracil cocrystals show an enhanced solubility profile, but unfortunately, their thermodynamic stability in aqueous media is limited to 24 h.
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Affiliation(s)
| | | | - Cristóbal Verdugo-Escamilla
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-Universidad de Granada, Avda. de las Palmeras 4, 18100 Armilla, Spain
| | - Jesús Martín
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Parque Tecnológico Ciencias de la Salud, Avda. del Conocimiento 34, 18016 Armilla, Spain
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), Spain
- Correspondence: (A.F.); (A.D.-M.); (D.C.-L.)
| | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
- Correspondence: (A.F.); (A.D.-M.); (D.C.-L.)
| | - Jaime Gómez-Morales
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-Universidad de Granada, Avda. de las Palmeras 4, 18100 Armilla, Spain
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-Universidad de Granada, Avda. de las Palmeras 4, 18100 Armilla, Spain
- Correspondence: (A.F.); (A.D.-M.); (D.C.-L.)
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4
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Garau A, Aragoni MC, Arca M, Caltagirone C, Demartin F, Isaia F, Lippolis V, Pivetta T. A new assembly of diiodine molecules at the 1,3-dimethylimidazole-2-thione (Me 2ImS) template: crystal structure of (Me 2ImS) 2·(I 2) 5. NEW J CHEM 2022. [DOI: 10.1039/d2nj00526c] [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 poly(I2) adduct [(Me2ImS)2·(I2)5] has been synthesised using a two-step process. The FT-Raman spectrum and MEP maps are discussed.
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Affiliation(s)
- Alessandra Garau
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Monserrato (CA), Italy
| | - M. Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Monserrato (CA), Italy
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Monserrato (CA), Italy
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Monserrato (CA), Italy
| | - Francesco Demartin
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133, Milano, Italy
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Monserrato (CA), Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Monserrato (CA), Italy
| | - Tiziana Pivetta
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Monserrato (CA), Italy
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5
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Lobana TS. Heterocyclic-2-thione derivatives of group 10–12 metals: Coordination versatility, activation of C S (thione) bonds and biochemical potential. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213884] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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6
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Isaia F, Aragoni MC, Arca M, Caltagirone C, Castellano C, Demartin F, Garau A, Lippolis V, Pivetta T. Oxidant/complexing properties of the methimazole (MeImHS)/iodine system towards palladium and gold metals. Crystal structure of the complex cation [Pd II(MeImHS) 4] 2+ balanced by a tetraiodide/iodide mixture. NEW J CHEM 2020. [DOI: 10.1039/c9nj05872a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The oxidative dissolution of palladium is easily and safely achievable both in dichloromethane and water by the methimazole/I2 mixture.
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Affiliation(s)
- Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - Maria Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - Carlo Castellano
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Francesco Demartin
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Alessandra Garau
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - Tiziana Pivetta
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
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7
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Quinlivan PJ, Chaijan MR, Palmer JH, Shlian DG, Parkin G. Coordination of 1-methyl-1,3-dihydro-2 H-benzimidazole-2-selone to zinc and cadmium: Monotonic and non-monotonic bond length variations for [H(sebenzim Me)] 2MCl 2 complexes (M = Zn, Cd, Hg). Polyhedron 2019; 164:185-194. [PMID: 31333278 PMCID: PMC6644719 DOI: 10.1016/j.poly.2019.01.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of 1-methyl-1,3-dihydro-2H-benzimidazole-2-selone, H(sebenzimMe), towards the zinc and cadmium halides, MX2 (M = Zn, Cd; X = Cl, Br, I), afford the adducts, [H(sebenzimMe)]2MX2, which have been structurally characterized by X-ray diffraction. The halide ligands of each of these complexes participate in hydrogen bonding interactions with the imidazole N-H moieties, although the nature of the interactions depends on the halide. Specifically, the chloride and bromide derivatives, [H(sebenzimMe)]2ZnX2 and [H(sebenzimMe)]2CdX2 (X = Cl, Br), exhibit two intramolecular N-H•••X interactions, whereas the iodide derivatives, [H(sebenzimMe)]2ZnI2 and [H(sebenzimMe)]2CdI2, exhibit only one intramolecular N-H•••I interaction. Comparison of the M-Se and M-Cl bond lengths of the chloride series, [H(sebenzimMe)]2MCl2 (M = Zn, Cd, Hg), indicates that while the average M-Cl bond lengths progressively increase as the metal becomes heavier, the variation in M-Se bond length exhibits a non-monotonic trend, with the Cd-Se bond being the longest. These different trends provide an interesting subtlety concerned with use of covalent radii in predicting bond length differences. In addition to tetrahedral [H(sebenzimMe)]2CdCl2, [H(sebenzimMe)]3,CdCl2•[H(sebenzim)Me]4CdCl2, which features both five-coordinate and six-coordinate coordinate centers, has also been structurally characterized. Finally, the reaction between CdI2 and H(sebenzimMe) at elevated temperatures affords the 1-methylbenzimidazole complex, [H(sebenzimMe)]-[H(benzimMe)]CdI2, a transformation that is associated with cleavage of the C-Se bond.
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Affiliation(s)
| | | | - Joshua H Palmer
- Department of Chemistry, Columbia University, New York, New York 10027, USA
| | - Daniel G Shlian
- Department of Chemistry, Columbia University, New York, New York 10027, USA
| | - Gerard Parkin
- Department of Chemistry, Columbia University, New York, New York 10027, USA
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8
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Yadav S, Singh HB, Butcher RJ. Synthesis and Reactivity of Selones and Dihaloselones: Complexation of Selones with d8
- and d10
-Metal Ions. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700218] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Sangeeta Yadav
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Mumbai India
| | - Harkesh B. Singh
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Mumbai India
| | - Ray J. Butcher
- Department of Chemistry; Howard University; 20059 Washington DC USA
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9
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Echeverría J, Cirera J, Alvarez S. Mercurophilic interactions: a theoretical study on the importance of ligands. Phys Chem Chem Phys 2017; 19:11645-11654. [DOI: 10.1039/c7cp00542c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A combined structural and theoretical analysis allowed us to determine the factors that favor the establishment of short Hg(ii)⋯Hg(ii) contacts based on metallophilic attraction.
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Affiliation(s)
- Jorge Echeverría
- Departament de Química Inorgànica i Orgànica (Secció d'Inorgànica) and Institut de Química Teòrica i Computacional (IQTCUB)
- Universitat de Barcelona, Martí i Franquès 1-11
- 08028 Barcelona
- Spain
| | - Jordi Cirera
- Departament de Química Inorgànica i Orgànica (Secció d'Inorgànica) and Institut de Química Teòrica i Computacional (IQTCUB)
- Universitat de Barcelona, Martí i Franquès 1-11
- 08028 Barcelona
- Spain
| | - Santiago Alvarez
- Departament de Química Inorgànica i Orgànica (Secció d'Inorgànica) and Institut de Química Teòrica i Computacional (IQTCUB)
- Universitat de Barcelona, Martí i Franquès 1-11
- 08028 Barcelona
- Spain
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10
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Urquiza NM, Naso LG, Martínez Medina JJ, Moyano MA, Lezama L, Williams PAM, Ferrer EG. Pharmacological activities of a propylthiouracil compound structurally modified by coordination with copper(II). J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1167885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Nora M. Urquiza
- Facultad de Bioquímica, Química y Farmacia, Cátedra de Química Analítica, Instituto de Química Analítica, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
| | - Luciana G. Naso
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), UNLP, La Plata, Argentina
| | - Juan J. Martínez Medina
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), UNLP, La Plata, Argentina
- Departamento de Química, UNCAUS, Chaco, Argentina
| | - María A. Moyano
- Facultad de Bioquímica, Química y Farmacia, Cátedra de Química Analítica, Instituto de Química Analítica, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
| | - Luis Lezama
- Facultad de Ciencia y Tecnología, Departamento de Química Inorgánica, Universidad del País Vasco UPV/EHU, Bilbao, Spain
- BCMaterials, Parque Científico y Tecnológico de Bizkaia, Derio, Spain
| | - Patricia A. M. Williams
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), UNLP, La Plata, Argentina
| | - Evelina G. Ferrer
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), UNLP, La Plata, Argentina
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11
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Bermejo E, Castiñeiras A, García-Santos I, Rodríguez-Riobó R. In situ generation of functionalized 1,2,4-triazole-5-thiones containing pyridine or pyrazine moieties and their coordination to HgII. CrystEngComm 2016. [DOI: 10.1039/c6ce00338a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Yadav S, Manjare ST, Singh HB, Butcher RJ. Transition metal mediated formation of dicationic diselenides stabilised by N-heterocyclic carbenes: designed synthesis. Dalton Trans 2016; 45:12015-27. [DOI: 10.1039/c6dt01425a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Designed syntheses of dicationic diselenides have been developed by (i) reduction of dihaloselones (routes A and B) and (ii) by oxidation of selone adducts of metal halides (route C).
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Affiliation(s)
- Sangeeta Yadav
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Sudesh T. Manjare
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
- Department of Chemistry
| | - Harkesh B. Singh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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13
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Isaia F, Aragoni MC, Arca M, Bettoschi A, Caltagirone C, Castellano C, Demartin F, Lippolis V, Pivetta T, Valletta E. Zinc(II)-methimazole complexes: synthesis and reactivity. Dalton Trans 2015; 44:9805-14. [PMID: 25928254 DOI: 10.1039/c5dt00917k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The tetrahedral S-coordinated complex [Zn(MeImHS)4](ClO4)2, synthesised from the reaction of [Zn(ClO4)2] with methimazole (1-methyl-3H-imidazole-2-thione, MeImHS), reacts with triethylamine to yield the homoleptic complex [Zn(MeImS)2] (MeImS = anion methimazole). ESI-MS and MAS (13)C-NMR experiments supported MeImS acting as a (N,S)-chelating ligand. The DFT-optimised structure of [Zn(MeImS)2] is also reported and the main bond lengths compared to those of related Zn-methimazole complexes. The complex [Zn(MeImS)2] reacts under mild conditions with methyl iodide and separates the novel complex [Zn(MeImSMe)2I2] (MeImSMe = S-methylmethimazole). X-ray diffraction analysis of the complex shows a ZnI2N2 core, with the methyl thioethers uncoordinated to zinc. Conversely, the reaction of [Zn(MeImS)2] with hydroiodic acid led to the formation of the complex [Zn(MeImHS)2I2] having a ZnI2S2 core with the neutral methimazole units S-coordinating the metal centre. The Zn-coordinated methimazole can markedly modify the coordination environment when changing from its thione to thionate form and vice versa. The study of the interaction of the drug methimazole with the complex [Zn(MeIm)4](2+) (MeIm = 1-methylimidazole) - as a model for Zn-enzymes containing a N4 donor set from histidine residues - shows that methimazole displaces only one of the coordinated MeIm molecules; the formation constant of the mixed complex [Zn(MeIm)3(MeImHS)](2+) was determined.
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Affiliation(s)
- Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Monserrato (CA), Italy.
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14
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Palmer J, Parkin G. Protolytic cleavage of Hg-C bonds induced by 1-methyl-1,3-dihydro-2H-benzimidazole-2-selone: synthesis and structural characterization of mercury complexes. J Am Chem Soc 2015; 137:4503-16. [PMID: 25822075 PMCID: PMC4415037 DOI: 10.1021/jacs.5b00840] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Indexed: 12/22/2022]
Abstract
Multinuclear ((1)H, (77)Se, and (199)Hg) NMR spectroscopy demonstrates that 1-methyl-1,3-dihydro-2H-benzimidazole-2-selone, H(sebenzim(Me)), a structural analogue of the selenoamino acid, selenoneine, binds rapidly and reversibly to the mercury centers of HgX2 (X = Cl, Br, I), while X-ray diffraction studies provide evidence for the existence of adducts of composition [H(sebenzim(Me))]xHgX2 (X = Cl, x = 2, 3, 4; X = I, x = 2) in the solid state. H(sebenzim(Me)) also reacts with methylmercury halides, but the reaction is accompanied by elimination of methane resulting from protolytic cleavage of the Hg-C bond, an observation that is of relevance to the report that selenoneine demethylates CysHgMe, thereby providing a mechanism for mercury detoxification. Interestingly, the structures of [H(sebenzim(Me))]xHgX2 exhibit a variety of different hydrogen bonding patterns resulting from the ability of the N-H groups to form hydrogen bonds with chlorine, iodine, and selenium.
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Affiliation(s)
- Joshua
H. Palmer
- Department
of Chemistry, Columbia University, New York, New York 10027, United States
| | - Gerard Parkin
- Department
of Chemistry, Columbia University, New York, New York 10027, United States
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15
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Taheriha M, Ghadermazi M, Amani V. Dimeric and polymeric mercury(II) complexes containing 4-methyl-1,2,4-triazole-3-thiol ligand: X-ray studies, spectroscopic characterization, and thermal analyses. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1333-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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Palmer JH, Parkin G. Synthesis and Structural Characterization of 1-Arylimidazole-2-thiones and N, N'-Aryldiethoxyethylthioureas with Electronically Diverse Substituents: A Manifold of Hydrogen Bonding Networks. NEW J CHEM 2014; 38:4071-4082. [PMID: 25214759 PMCID: PMC4157683 DOI: 10.1039/c4nj00521j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The 1-arylimidazole-2-thiones, (HmimAr) [Ar = 3,4,5-C6H2(OMe)3, 2,4-C6H3(NO2)(OMe), 2,4,6-C6H2Cl3 and 3,5-C6H3(CF3)2], which feature electronically diverse substituents, may be obtained via acid-catalyzed ring closure of the corresponding N,N'-aryldiethoxyethylthiourea derivatives, ArN(H)C(S)N(H)CH2CH(OEt)2, (H2detuAr), which in turn are obtained via treatment of aminoacetaldehyde diethyl acetal, H2NCH2CH(OEt)2, with the respective arylisothiocyanates (ArNCS). The molecular structures of all of the above N,N'-aryldiethoxyethylthioureas and 1-arylimidazole-2-thiones have been determined by X-ray diffraction, thereby demonstrating that the substituents have a profound effect on the crystal structures. For example, each of the N,N'-aryldiethoxyethylthiourea derivatives adopts a different hydrogen bonding pattern. Specifically, the hydrogen-bonding network in (i) H2detuArCl3 consists of chains of 9-membered rings, with an [ [Formula: see text](9)] motif, that feature one N-H ⋯ O and one N-H ⋯ S interaction, (ii) H2detuArOMe,NO2 consists of chains of 6-membered rings, with an [ [Formula: see text](6)] motif, that feature two head-to-tail N-H ⋯ S interactions, (iii) H2detuAr(CF3)2 consists of a dimer that features two pairs of N-H ⋯ O interactions, of which each pair is a component of an 8-membered ring with an [ [Formula: see text](8)] motif, and (iv) H2detuAr(OMe)3 consists of a chain of head-to-head dimeric rings with a basic [ [Formula: see text](16)] motif, a notable feature of which is that sulfur does not play a role as a hydrogen bond acceptor. Each of the 1-arylimidazole-2-thiones exists as a "head-to-head" hydrogen-bonded dimer in the solid state, with an [ [Formula: see text](8)] motif. However, while the hydrogen-bonded motifs for HmimArCl3 and HmimAr(OMe)3 are planar, those for HmimAr(CF3)2 and HmimArOMe,NO2 are extremely puckered, with fold angles of 24.2° (mean value) and 45.7°, respectively.
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Affiliation(s)
- Joshua H. Palmer
- Department of Chemistry, Columbia University, New York, New York 10027,
USA
| | - Gerard Parkin
- Department of Chemistry, Columbia University, New York, New York 10027,
USA
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17
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Wismach C, Jones PG, du Mont WW, Mugesh G, Papke U, Linden HB, Arca M, Lippolis V. Iodo(trisyl)sulfane: Reactivity of a Stable Alkanesulfenyl Iodide towards Antithyroid Drugs. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301576] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Isaia F, Aragoni MC, Arca M, Caltagirone C, Garau A, Jones PG, Lippolis V, Montis R. Reactivity of the drug methimazole and its iodine adduct with elemental zinc. CrystEngComm 2014. [DOI: 10.1039/c3ce42601g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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19
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Mancini A, Aragoni MC, Bingham AL, Castellano C, Coles née Huth SL, Demartin F, Hursthouse MB, Isaia F, Lippolis V, Maninchedda G, Pintus A, Arca M. Reactivity of Fluoro-Substituted Bis(thiocarbonyl) Donors with Diiodine: An XRD, FT-Raman, and DFT Investigation. Chem Asian J 2013; 8:3071-8. [DOI: 10.1002/asia.201300693] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Indexed: 11/11/2022]
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20
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Rong Y, Al-Harbi A, Kriegel B, Parkin G. Structural Characterization of 2-Imidazolones: Comparison with their Heavier Chalcogen Counterparts. Inorg Chem 2013; 52:7172-82. [DOI: 10.1021/ic400788g] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yi Rong
- Department of Chemistry, Columbia University, New York, New York 10027, United
States
| | - Ahmed Al-Harbi
- Department of Chemistry, Columbia University, New York, New York 10027, United
States
| | - Benjamin Kriegel
- Department of Chemistry, Columbia University, New York, New York 10027, United
States
| | - Gerard Parkin
- Department of Chemistry, Columbia University, New York, New York 10027, United
States
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21
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Qin Y, Ma Q, Jia AQ, Chen Q, Zhang QF. Synthesis and structural characterization of ruthenium complexes with 1-aryl-imidazole-2-thione. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.782607] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yi Qin
- a Department of Applied Chemistry , School of Petrochemical Engineering, Changzhou University , Changzhou , P.R. China
| | - Qing Ma
- a Department of Applied Chemistry , School of Petrochemical Engineering, Changzhou University , Changzhou , P.R. China
- b Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology , Ma’anshan , P.R. China
| | - Ai-Quan Jia
- a Department of Applied Chemistry , School of Petrochemical Engineering, Changzhou University , Changzhou , P.R. China
| | - Qun Chen
- a Department of Applied Chemistry , School of Petrochemical Engineering, Changzhou University , Changzhou , P.R. China
| | - Qian-Feng Zhang
- a Department of Applied Chemistry , School of Petrochemical Engineering, Changzhou University , Changzhou , P.R. China
- b Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology , Ma’anshan , P.R. China
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22
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Palmer JH, Parkin G. 2-Seleno-1-alkylbenzimidazoles and their Diselenides: Synthesis and Structural Characterization of a 2-Seleno-1-methylbenzimidazole Complex of Mercury. Polyhedron 2013; 52:658-668. [PMID: 23543946 PMCID: PMC3610765 DOI: 10.1016/j.poly.2012.07.090] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
2-Seleno-1-methylbenzimidazole, H(sebenzimMe), can be synthesized from 1-methylbenzimidazole by sequential treatment with (i) BunLi, (ii) elemental selenium and (iii) HCl(aq). This method is also applicable to the synthesis of 2-seleno-1-t-butylbenzimidazole, H(sebenzimBut ). Single crystal X-ray diffraction and NMR spectroscopic data demonstrate that H(sebenzimMe) and H(sebenzimBut ) exist as the selone rather than the selenol tautomers, which is in accord with the results of density functional theory (B3LYP) calculations. The data also indicate that the selone is best represented as a C+-Se- zwitterion rather than as a C=Se doubly bonded species. Aerobic oxidation of H(sebenzimMe) and H(sebenzimBut ) in the presence of Et3N yields the diselenides, (sebenzimMe)2 and (sebenzimBut )2. In addition, H(sebenzimMe) reacts with HgCl2 to give [H(sebenzimMe)]2HgCl2, the first structurally characterized example of a 2-seleno-1-alkylimidazole mercury complex.
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Affiliation(s)
- Joshua H. Palmer
- Department of Chemistry, Columbia University, New York, New York 10027, USA
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23
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Isaia F, Aragoni MC, Arca M, Caltagirone C, Demartin F, Garau A, Lippolis V. Gold oxidative dissolution by (thioamide)–I2adducts. Dalton Trans 2013; 42:492-8. [DOI: 10.1039/c2dt31855e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Mancini A, Aragoni MC, Bricklebank N, Castellano C, Demartin F, Isaia F, Lippolis V, Pintus A, Arca M. Formation of T-Shaped versus Charge-Transfer Molecular Adducts in the Reactions Between Bis(thiocarbonyl) Donors and Br2and I2. Chem Asian J 2012; 8:639-47. [DOI: 10.1002/asia.201201043] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 11/19/2012] [Indexed: 11/06/2022]
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25
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Bhabak KP, Bhowmick D. Synthesis and structural characterization of some trisulfide analoges of thiouracil-based antithyroid drugs. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Jia AQ, Ma Q, Chen Q, Shi HT, Leung WH, Zhang QF. Synthesis and characterization of ruthenium complexes with 1-aryl-2-mercaptoimidazole ligands. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.01.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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27
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Chernov'yants MS, Khohlov EV, Bondarenko GI, Burykin IV. Estimation of σ- and π-donor properties of heterocyclic thioamides by spectroscopic and magnetic resonance methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 81:640-644. [PMID: 21788156 DOI: 10.1016/j.saa.2011.06.067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 06/23/2011] [Accepted: 06/26/2011] [Indexed: 05/31/2023]
Abstract
The charge-transfer complexes (CTC) of few thioamide: 1-methylimidazoline-2-thione (MMI), 3-methyl-1-ethoxycarbonilimidazoline-2-thione (Carb), 5-methylbenzimidazoline-2-thione (BIZ), benzothiazoline-2-thione (BTZ), benzoxazoline-2-thione (BOZ) as σ-donors and diiodine as σ-acceptor were studied by spectroscopic methods (UV/Vis, (1)H NMR). CTC formation constants of thioamides with diiodine were determined using the function of the average-iodine number. The charge-transfer complexes of thioamides as π-donors with tetracyanoethylene (TCNE) as π-electron acceptor, were studied by UV-spectroscopy in dichloromethane and chloroform solutions. The mechanism of interaction MMI and Carb with TCNE have been studied by EPR spectroscopy. Spectral characteristics and formation constants are discussed in the terms of electron donor affinity of thioamides and the nature of the organic solvent used. The ionization potentials of donors were estimated from the CT transition energies of their complexes. The photolytic equilibrium constants of five thioamides are determined using pH-metric titrations.
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