1
|
Blake AJ, Castellano C, Lippolis V, Podda E, Schröder M. Formation of extended polyiodides at large cation templates. Acta Crystallogr C Struct Chem 2024; 80:311-318. [PMID: 38934272 PMCID: PMC11225612 DOI: 10.1107/s2053229624004194] [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: 04/09/2024] [Accepted: 05/07/2024] [Indexed: 06/28/2024] Open
Abstract
By studying the structures of (μ-1,4,10,13-tetrathia-7,16-diazacyclooctadecane)bis[iodidopalladium(II)] diiodide penta(diiodine), [Pd2I2(C12H26N2S4)](I)2·5I2 or [Pd2I2([18]aneN2S4)](I)2·(I2)5, and 4,7,13,16,21,24-hexaoxa-1,10-diazoniabicyclo[8.8.8]hexacosane triiodide iodide hemipenta(diiodine) dichloromethane monosolvate, C18H38N2O62+·I3-·I-·2.5I2·CH2Cl2 or [H2([2.2.2]cryptand)](I3)(I)(I2)2.5·CH2Cl2, we confirm the structural variety of extended polyiodides achievable upon changing the shape, charge and dimensions of the cation template, by altering the synthetic strategy adopted and/or the experimental conditions. Although it is still often difficult to characterize discrete [I2m+n]n- polyiodides higher than I3- on the basis of structural parameters, such as I-I bond distances, FT-Raman spectroscopy appears to identify them as aggregates of I2, I- and (symmetric or slightly asymmetric) I3- building blocks linked by I...I interactions of varying strengths. However, because FT-Raman spectroscopy carries no information about the topological features of extended polyiodides, the two techniques should therefore be applied in combination to enhance the analysis of this kind of compounds.
Collapse
Affiliation(s)
- Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom
| | - Carlo Castellano
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, Milano, 20133, Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, Monserrato (CA), 09042, Italy
| | - Enrico Podda
- Centre for Research University Services (CeSAR), Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, Monserrato (CA), 09042, Italy
| | - Martin Schröder
- Department of Chemistry The University of ManchesterManchester M139PL United Kingdom
| |
Collapse
|
2
|
Manjón FJ, Osman HH, Savastano M, Vegas Á. Electron-Deficient Multicenter Bonding in Phase Change Materials: A Chance for Reconciliation. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2840. [PMID: 38930210 PMCID: PMC11204841 DOI: 10.3390/ma17122840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 06/03/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024]
Abstract
In the last few years, a controversy has been raised regarding the nature of the chemical bonding present in phase change materials (PCMs), many of which are minerals such as galena (PbS), clausthalite (PbSe), and altaite (PbTe). Two opposite bonding models have claimed to be able to explain the extraordinary properties of PCMs in the last decade: the hypervalent (electron-rich multicenter) bonding model and the metavalent (electron-deficient) bonding model. In this context, a third bonding model, the electron-deficient multicenter bonding model, has been recently added. In this work, we comment on the pros and cons of the hypervalent and metavalent bonding models and briefly review the three approaches. We suggest that both hypervalent and metavalent bonding models can be reconciled with the third way, which considers that PCMs are governed by electron-deficient multicenter bonds. To help supporters of the metavalent and hypervalent bonding model to change their minds, we have commented on the chemical bonding in GeSe and SnSe under pressure and in several polyiodides with different sizes and geometries.
Collapse
Affiliation(s)
- Francisco Javier Manjón
- Instituto de Diseño para la Fabricación y Producción Automatizada, MALTA Consolider Team, Universitat Politècnica de València, 46022 Valencia, Spain;
| | - Hussien H. Osman
- Instituto de Diseño para la Fabricación y Producción Automatizada, MALTA Consolider Team, Universitat Politècnica de València, 46022 Valencia, Spain;
- Instituto de Ciencia de los Materiales de la Universitat de València, MALTA Consolider Team, Universitat de València, 46100 Valencia, Spain
- Chemistry Department, Faculty of Science, Helwan University, Cairo 11795, Egypt
| | - Matteo Savastano
- Department of Human Sciences for the Promotion of Quality of Life, University San Raffaele Roma, via di Val Cannuta 247, 00166 Rome, Italy;
| | - Ángel Vegas
- Universidad de Burgos, Hospital del Rey, 09001 Burgos, Spain;
| |
Collapse
|
3
|
Edis Z, Bloukh SH. Thymol, a Monoterpenoid within Polymeric Iodophor Formulations and Their Antimicrobial Activities. Int J Mol Sci 2024; 25:4949. [PMID: 38732168 PMCID: PMC11084924 DOI: 10.3390/ijms25094949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 04/18/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
Antimicrobial resistance (AMR) poses an emanating threat to humanity's future. The effectiveness of commonly used antibiotics against microbial infections is declining at an alarming rate. As a result, morbidity and mortality rates are soaring, particularly among immunocompromised populations. Exploring alternative solutions, such as medicinal plants and iodine, shows promise in combating resistant pathogens. Such antimicrobials could effectively inhibit microbial proliferation through synergistic combinations. In our study, we prepared a formulation consisting of Aloe barbadensis Miller (AV), Thymol, iodine (I2), and polyvinylpyrrolidone (PVP). Various analytical methods including SEM/EDS, UV-vis, Raman, FTIR, and XRD were carried out to verify the purity, composition, and morphology of AV-PVP-Thymol-I2. We evaluated the inhibitory effects of this formulation against 10 selected reference strains using impregnated sterile discs, surgical sutures, gauze bandages, surgical face masks, and KN95 masks. The antimicrobial properties of AV-PVP-Thymol-I2 were assessed through disc diffusion methods against 10 reference strains in comparison with two common antibiotics. The 25-month-old formulation exhibited slightly lower inhibitory zones, indicating changes in the sustained-iodine-release reservoir. Our findings confirm AV-PVP-Thymol-I2 as a potent antifungal and antibacterial agent against the reference strains, demonstrating particularly strong inhibitory action on surgical sutures, cotton bandages, and face masks. These results enable the potential use of the formulation AV-PVP-Thymol-I2 as a promising antimicrobial agent against wound infections and as a spray-on contact-killing agent.
Collapse
Affiliation(s)
- Zehra Edis
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Science, Ajman University, Ajman P.O. Box 346, United Arab Emirates
- Center of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates;
| | - Samir Haj Bloukh
- Center of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates;
- Department of Clinical Sciences, College of Pharmacy and Health Science, Ajman University, Ajman P.O. Box 346, United Arab Emirates
| |
Collapse
|
4
|
Padgett CW, Dean R, Cobb A, Miller A, Goetz A, Bailey S, Hillis K, McMillen C, Toney S, Guillet GL, Lynch W, Pennington WT. Comparison of N···I and N···O Halogen Bonds in Organoiodine Cocrystals of Heterocyclic Aromatic Diazine Mono- N-oxides. CRYSTAL GROWTH & DESIGN 2024; 24:2425-2438. [PMID: 38525103 PMCID: PMC10958445 DOI: 10.1021/acs.cgd.3c01344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/26/2024]
Abstract
A series of cocrystals of halogen bond donors 1,4-diiodotetrafluorobenzene (p-F4DIB) and tetraiodoethylene (TIE) with five aromatic heterocyclic diazine mono-N-oxides based on pyrazine, tetramethylpyrazine, quinoxaline, phenazine, and pyrimidine as halogen bonding acceptors were studied. Structural analysis of the mono-N-oxides allows comparison of the competitive occurrence of N···I vs O···I interactions and the relative strength and directionality of these two types of interactions. Of the aromatic heterocyclic diazine mono-N-oxide organoiodine cocrystals examined, six exhibited 1:1 stoichiometry, forming chains that utilized both N···I and O···I interactions. Two cocrystals presented 1:1 stoichiometry with exclusive O···I interactions. Two cocrystals displayed a 2:1 stoichiometry-one characterized solely by O···I interactions and the other solely by N···I interactions. We have also compared these interactions to those present in the corresponding diazines, some of which we report here and some which have been previously reported. In addition, a computational analysis using density functional theory (M062X/def2-SVPD) was performed on these two systems and has been compared to the experimental results. The calculated complex formation energies were, on average, 4.7 kJ/mol lower for the I···O halogen bonding interaction as compared to the corresponding N···I interaction. The average I···O interaction distances were calculated to be 0.15 Å shorter than the corresponding I···N interactions.
Collapse
Affiliation(s)
- Clifford W Padgett
- Department of Biochemistry, Chemistry and Physics, Georgia Southern University, Savannah, Georgia 31419, United States
| | - Riley Dean
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| | - Audrey Cobb
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| | - Aubree Miller
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| | - Andrew Goetz
- Department of Biochemistry, Chemistry and Physics, Georgia Southern University, Savannah, Georgia 31419, United States
| | - Sam Bailey
- Department of Biochemistry, Chemistry and Physics, Georgia Southern University, Savannah, Georgia 31419, United States
| | - Kyle Hillis
- Department of Biochemistry, Chemistry and Physics, Georgia Southern University, Savannah, Georgia 31419, United States
| | - Colin McMillen
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| | - Sydney Toney
- Department of Biochemistry, Chemistry and Physics, Georgia Southern University, Savannah, Georgia 31419, United States
| | - Gary L Guillet
- Department of Biochemistry, Chemistry and Physics, Georgia Southern University, Savannah, Georgia 31419, United States
| | - Will Lynch
- Department of Biochemistry, Chemistry and Physics, Georgia Southern University, Savannah, Georgia 31419, United States
| | - William T Pennington
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| |
Collapse
|
5
|
Poręba T, Macchi P, Casati N, Sierański T. Pressure stabilization effect on the donor-acceptor polyiodide chains in tetraethylammonium bis(diiodine) triiodide - insights from Raman spectroscopy. Dalton Trans 2024; 53:5152-5159. [PMID: 38380815 DOI: 10.1039/d4dt00268g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Polyiodides present high bonding flexibility already at ambient conditions, and undergo significant pressure-induced structural deformations. Resonant Raman spectroscopy has been widely used to study I-I bonds in various polyiodides, but it carries a risk of photodecomposition due to the high visible-light absorption of iodine. In this study, tetraethylammonium (bis)diiodine triiodide (TEAI) has been investigated by resonant Raman spectroscopy up to 12.02(3) GPa. The effect of pressure on the intensities and positions of Raman bands has been evaluated and correlated with the interatomic I-I distances derived from high-pressure X-ray diffraction experiments. Pressure was shown to effectively stabilize TEAI against laser-induced photodecomposition, even after a long course of irradiation with the resonant laser light. Examination of a freshly exposed crystal surface revealed that TEAI superficially passivates with the layer of lower polyiodides, which prevents further iodine loss, and shows distinct pressure-induced behaviour.
Collapse
Affiliation(s)
- Tomasz Poręba
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Federale de Lausanne, Lausanne CH-1015, Switzerland.
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Piero Macchi
- Department of Chemistry, Materials and Chemical Engineering, Polytechnics of Milan, Via Mancinelli 7, 20131, Milan, Italy
| | - Nicola Casati
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - Tomasz Sierański
- Institute of General and Ecological Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
| |
Collapse
|
6
|
Savastano M. Ye Olde supramolecular chemistry, its modern rebranding and overarching trends in chemistry. Dalton Trans 2024; 53:1373-1392. [PMID: 38180341 DOI: 10.1039/d3dt03686c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
We can describe current contingency of supramolecular chemistry as "post-halogen bonding", with clear reference to the success of the σ-hole model and the halogen bond concepts. This phase is characterized by a strong push towards a new nomenclature for non-covalent interactions, a group-by-group one focusing on the electrophile. As such nomenclature increasingly meets IUPAC endorsement, its proposers report resistances to such ideas, especially in the inorganic and coordination chemistry communities. The whole issue has been generating considerable debate in the last decade. Herein we fully embrace such discussion in the hope of involving a larger share of the relevant communities. Alternative descriptions are here reevaluated, novel views reconnected with older ones, and it is ultimately questioned whether the introduction of such a nomenclature and its subtending ideas would be beneficial. The themes of appreciation of general trends in chemistry, of counterintuitive interactions, of positioning of novel nomenclature with respect to existing ones, and of the extension of group-by-group naming from main block to d-block elements - as key and currently unresolved issues - are discussed. Equivalent, alternative and arguably more comprehensive descriptions are tentatively given, in the hope to overcome controversies together in the pursuit of higher rewards: a comprehensive shared view of supramolecular forces and a common language to express it.
Collapse
Affiliation(s)
- Matteo Savastano
- Department of Human Sciences for the Promotion of Quality of Life, University San Raffaele Roma, via di Val Cannuta 247, 00166, Rome, Italy.
| |
Collapse
|
7
|
Shestimerova TA, Andreev IA, Ratmanova NK, Trushkov IV, Kuznetsov AN, Shevelkov AV. Crystal and electronic structure of thiazolium pentaiodide: an experimental and theoretical study of covalent and non-covalent bonds. Struct Chem 2023. [DOI: 10.1007/s11224-022-02097-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
|
8
|
Iron(II) Mediated Supramolecular Architectures with Schiff Bases and Their Spin-Crossover Properties. Molecules 2023; 28:molecules28031012. [PMID: 36770685 PMCID: PMC9919814 DOI: 10.3390/molecules28031012] [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: 12/27/2022] [Revised: 01/11/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023] Open
Abstract
Supramolecular architectures, which are formed through the combination of inorganic metal cations and organic ligands by self-assembly, are one of the techniques in modern chemical science. This kind of multi-nuclear system in various dimensionalities can be implemented in various applications such as sensing, storage/cargo, display and molecular switching. Iron(II) mediated spin-crossover (SCO) supramolecular architectures with Schiff bases have attracted the attention of many investigators due to their structural novelty as well as their potential application possibilities. In this paper, we review a number of supramolecular SCO architectures of iron(II) with Schiff base ligands exhibiting varying geometrical possibilities. The structural and SCO behavior of these complexes are also discussed in detail.
Collapse
|
9
|
Porȩba T, Racioppi S, Garbarino G, Morgenroth W, Mezouar M. Investigating the Structural Symmetrization of CsI 3 at High Pressures through Combined X-ray Diffraction Experiments and Theoretical Analysis. Inorg Chem 2022; 61:10977-10985. [DOI: 10.1021/acs.inorgchem.2c01690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Tomasz Porȩba
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Stefano Racioppi
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000, United States
| | - Gaston Garbarino
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Wolfgang Morgenroth
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
- Institute of Geosciences, University of Potsdam, Potsdam-Golm 14476, Germany
| | - Mohamed Mezouar
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
| |
Collapse
|
10
|
Te⋯N secondary-bonding interactions in tellurium crystals: Supramolecular aggregation patterns and a comparison with their lighter congeners. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214397] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
11
|
Savastano M, Bazzicalupi C, Bianchi A. Novel cyclen-polyiodide complexes: a reappraisal of I-I covalent and secondary bond limits. Dalton Trans 2022; 51:10728-10739. [PMID: 35293413 DOI: 10.1039/d2dt00185c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supramolecular stabilization of polyiodides and iodine-dense phases is of high interest: this study explores the possibilities offered in this sense by diprotonated cyclen, affording two novel crystal structures. One of them contains at least one peculiar I⋯I interatomic distance (3.305(1) Å), falling well below the region commonly described by secondary bonding (3.4-3.7 Å) and essentially equal to the accepted limit for covalent bonding (3.30 Å): in other words, according to threshold distance values, we are relatively free to regard this interaction either as a bond or as contact. Lest the flip of a coin decides if we should or should not draw a bond in a polyiodide, statistical insights based on CSD surveys were used to put in perspective literature material and work out a meaningful assignment (as I82-). In doing so, we address how currently accepted threshold distance values came to be in the first place, their significance, soundness, and shortcomings in describing I82- and its formal fragments (I2, I3-, I5-). Discussion of the chemical meaning of the line representing bonding in I-I fragments in similar fringe cases, relating CSD data herein presented with the previous literature, is provided. Available information coincides quite well in supporting the necessity of a revision of broadly accepted threshold distance values.
Collapse
Affiliation(s)
- Matteo Savastano
- Department of Chemistry "Ugo Schiff", Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.
| | - Carla Bazzicalupi
- Department of Chemistry "Ugo Schiff", Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.
| | - Antonio Bianchi
- Department of Chemistry "Ugo Schiff", Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.
| |
Collapse
|
12
|
Shestimerova TA, Bykov AV, Kuznetsov AN, Grishko AY, Wei Z, Dikarev EV, Shevelkov AV. Pattern of covalent and non‐covalent interactions within the pentaiodide anion in the structure of (3‐HOC5H9NH2)I5. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tatiana A. Shestimerova
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia RUSSIAN FEDERATION
| | - Andrey V. Bykov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia RUSSIAN FEDERATION
| | - Alexey N. Kuznetsov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia. N. S. Kurnakov Institute of General and Inorganic Chemistry RAS, 119991 Moscow, Russia RUSSIAN FEDERATION
| | - Alexey Y. Grishko
- Department of Materials Sciences, Lomonosov Moscow State University, 119991 Moscow, Russia RUSSIAN FEDERATION
| | - Zheng Wei
- Department of Chemistry, University at Albany, SUNY, Albany New York 12222, United States RUSSIAN FEDERATION
| | - Evgeny V. Dikarev
- Department of Chemistry, University at Albany, SUNY, Albany New York 12222, United States RUSSIAN FEDERATION
| | - Andrei V. Shevelkov
- Lomonosov Moscow State University Chemistry Leninskie Gory 1/3 119991 Moscow RUSSIAN FEDERATION
| |
Collapse
|
13
|
Abstract
Iodine-dense polyiodide phases are interesting materials for a number of potential uses, including batteries and solid-state conductors. The incorporation of transition metal cations is considered a promising way to enhance the stability, tune the properties, and influence the architecture of polyiodides. However, several interesting metals, including Cu(II), may suffer redox processes, which generally make them not compatible with the I2/I− redox couple. Herein L, a simple derivative of cyclen, is proposed as a Cu(II) ligand capable of protecting the +2 oxidation state of the metal even in the presence of polyiodides. With a step by step approach, we report the crystal structure of free L; then we present spectrophotometric verification of Cu(II) complex stability, stoichiometry, and formation kinetic in DMF solution, together with Cu(II) binding mode elucidation via XRD analysis of [Cu(L)Cl]ClO4∙CH3CN crystals; afterwards, the stability of the CuL complex in the presence of I− is demonstrated in DMF solution, where the formation of a Cu:L:I− ternary complex, rather than reduction to Cu(I), is observed; lastly, polyiodide crystals are prepared, affording the [Cu(L)I]2I3I5 crystal structure. This layered structure is highly peculiar due to its chiral arrangement, opening further perspective for the crystal engineering of polyiodide phases.
Collapse
|
14
|
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.
Collapse
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
| |
Collapse
|
15
|
Martínez-Camarena Á, Savastano M, Blasco S, Delgado-Pinar E, Giorgi C, Bianchi A, García-España E, Bazzicalupi C. Assembly of Polyiodide Networks with Cu(II) Complexes of Pyridinol-Based Tetraaza Macrocycles. Inorg Chem 2021; 61:368-383. [PMID: 34933551 PMCID: PMC8753606 DOI: 10.1021/acs.inorgchem.1c02967] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Polyiodide networks
are currently of great practical interest for
the preparation of new electronic materials. The participation of
metals in the formation of these networks is believed to improve their
mechanical performance and thermal stability. Here we report the results
on the construction of polyiodide networks obtained using Cu(II) complexes
of a series of pyridinol-based tetraazacyclophanes as countercations.
The assembly of these crystalline polyiodides takes place from aqueous
solutions on the basis of similar structural elements, the [CuL]2+ and [Cu(H–1L)]+ (L = L2, L2-Me, L2-Me3) complex cations, so that the peculiarities induced by the
increase of N-methylation of ligands, the structural variable of ligands,
can be highlighted. First, solution equilibria involving ligands and
complexes were analyzed (potentiometry, NMR, UV–vis, ITC).
Then, the appropriate conditions could be selected to prepare polyiodides
based on the above complex cations. Single-crystal XRD analysis showed
that the coordination of pyridinol units to two metal ions is a prime
feature of these ligands, leading to polymeric coordination chains
of general formula {[Cu(H–1L)]}nn+ (L = L2-Me, L2-Me3). In the presence of the I–/I2 couple, the polymerization tendency
stops with the formation of [(CuL)(CuH–1L)]3+ (L = L2-Me, L2-Me3) dimers which are surrounded by polyiodide networks. Moreover,
coordination of the pyridinol group to two metal ions transforms the
surface charge of the ring from negative to markedly positive, generating
a suitable environment for the assembly of polyiodide anions, while
N-methylation shifts the directional control of the assembly from
H-bonds to I···I interactions. In fact, an extended
concatenation of iodine atoms occurs around the complex dimeric cations,
the supramolecular I···I interactions become shorter
and shorter, fading into stronger forces dominated by the orbital
overlap, which is promising for effective electronic materials. Polyiodides with high iodine density
are generated by Cu(II)
complexes of pyridinol-based tetraazacyclophanes. Direct coordination
of iodine atoms to Cu(II), anion−π interactions with
electron-poor aromatic surfaces, and shift of the directional control
of assembly from H-bonds to I···I interactions, governed
by N-methylation, are the main elements leading to enhanced iodine
chaining and strengthening of I···I contacts.
Collapse
Affiliation(s)
- Álvaro Martínez-Camarena
- ICMol, Department of Inorganic Chemistry, University of Valencia, C/Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Matteo Savastano
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - Salvador Blasco
- ICMol, Department of Inorganic Chemistry, University of Valencia, C/Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Estefanía Delgado-Pinar
- ICMol, Department of Inorganic Chemistry, University of Valencia, C/Catedrático José Beltrán 2, 46980 Paterna, Spain.,Department of Chemistry, CQC, University of Coimbra, P3004-535 Coimbra, Portugal
| | - Claudia Giorgi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - Antonio Bianchi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - Enrique García-España
- ICMol, Department of Inorganic Chemistry, University of Valencia, C/Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Carla Bazzicalupi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| |
Collapse
|
16
|
Shestimerova TA, Golubev NA, Bykov MA, Mironov AV, Fateev SA, Tarasov AB, Turkevych I, Wei Z, Dikarev EV, Shevelkov AV. Molecular and Supramolecular Structures of Triiodides and Polyiodobismuthates of Phenylenediammonium and Its N,N-dimethyl Derivative. Molecules 2021; 26:molecules26185712. [PMID: 34577182 PMCID: PMC8470886 DOI: 10.3390/molecules26185712] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 11/29/2022] Open
Abstract
Despite remarkable progress in photoconversion efficiency, the toxicity of lead-based hybrid perovskites remains an important issue hindering their applications in consumer optoelectronic devices, such as solar cells, LED displays, and photodetectors. For that reason, lead-free metal halide complexes have attracted great attention as alternative optoelectronic materials. In this work, we demonstrate that reactions of two aromatic diamines with iodine in hydroiodic acid produced phenylenediammonium (PDA) and N,N-dimethyl-phenylenediammonium (DMPDA) triiodides, PDA(I3)2⋅2H2O and DMPDA(I3)I, respectively. If the source of bismuth was added, they were converted into previously reported PDA(BiI4)2⋅I2 and new (DMPDA)2(BiI6)(I3)⋅2H2O, having band gaps of 1.45 and 1.7 eV, respectively, which are in the optimal range for efficient solar light absorbers. All four compounds presented organic–inorganic hybrids, whose supramolecular structures were based on a variety of intermolecular forces, including (N)H⋅⋅⋅I and (N)H⋅⋅⋅O hydrogen bonds as well as I⋅⋅⋅I secondary and weak interactions. Details of their molecular and supramolecular structures are discussed based on single-crystal X-ray diffraction data, thermal analysis, and Raman and optical spectroscopy.
Collapse
Affiliation(s)
- Tatiana A. Shestimerova
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (T.A.S.); (N.A.G.); (M.A.B.); (A.V.M.); (A.B.T.)
| | - Nikita A. Golubev
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (T.A.S.); (N.A.G.); (M.A.B.); (A.V.M.); (A.B.T.)
| | - Mikhail A. Bykov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (T.A.S.); (N.A.G.); (M.A.B.); (A.V.M.); (A.B.T.)
| | - Andrei V. Mironov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (T.A.S.); (N.A.G.); (M.A.B.); (A.V.M.); (A.B.T.)
| | - Sergey A. Fateev
- Department of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Alexey B. Tarasov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (T.A.S.); (N.A.G.); (M.A.B.); (A.V.M.); (A.B.T.)
- Department of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Ivan Turkevych
- Sensing System Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8565, Japan;
| | - Zheng Wei
- Department of Chemistry, University at Albany, SUNY, Albany, NY 12222, USA; (Z.W.); (E.V.D.)
| | - Evgeny V. Dikarev
- Department of Chemistry, University at Albany, SUNY, Albany, NY 12222, USA; (Z.W.); (E.V.D.)
| | - Andrei V. Shevelkov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (T.A.S.); (N.A.G.); (M.A.B.); (A.V.M.); (A.B.T.)
- Correspondence:
| |
Collapse
|
17
|
Tiekink ER. Supramolecular aggregation patterns featuring Se⋯N secondary-bonding interactions in mono-nuclear selenium compounds: A comparison with their congeners. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214031] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|