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Manickavasagam G, He C, Lin KYA, Saaid M, Oh WD. Recent advances in catalyst design, performance, and challenges of metal-heteroatom-co-doped biochar as peroxymonosulfate activator for environmental remediation. ENVIRONMENTAL RESEARCH 2024; 252:118919. [PMID: 38631468 DOI: 10.1016/j.envres.2024.118919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/02/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024]
Abstract
The escalation of global water pollution due to emerging pollutants has gained significant attention. To address this issue, catalytic peroxymonosulfate (PMS) activation technology has emerged as a promising treatment approach for effectively decontaminating a wide range of pollutants. Recently, modified biochar has become an increasingly attractive as PMS activator. Metal-heteroatom-co-doped biochar (MH-BC) has emerged as a promising catalyst that can provide enhanced performance over heteroatom-doped and metal-doped biochar due to the synergism between metal and heteroatom in promoting PMS activation. Therefore, this review aims to discuss the fabrication pathways (i.e., internal vs external doping and pre-vs post-modification) and key parameters (i.e., source of precursors, synthesis methods, and synthesis conditions) affecting the performance of MH-BC as PMS activator. Subsequently, an overview of all the possible PMS activation pathways by MH-BC is provided. Subsequently, Also, the detection, identification, and quantification of several reactive species (such as, •OH, SO4•-, O2•-, 1O2, and high valent oxo species) generated in the catalytic PMS system by MH-BC are also evaluated. Lastly, the underlying challenges associated with poor stability, the lack of understanding regarding the interaction between metal and heteroatom during PMS activation and quantification of radicals in multi-ROS system are also deliberated.
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Affiliation(s)
| | - Chao He
- Faculty of Engineering and Natural Sciences, Tampere University, Tampere, Finland
| | - Kun-Yi Andrew Lin
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, 250, Kuo-Kuang Road, Taichung, Taiwan; Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Mardiana Saaid
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Wen-Da Oh
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia.
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2
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Computational study of the effect of π-spacers on the optoelectronic properties of carbazole-based organic dyes. J Mol Model 2021; 27:122. [PMID: 33822262 DOI: 10.1007/s00894-021-04733-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 03/14/2021] [Indexed: 10/21/2022]
Abstract
In this article, we studied a series of dye-sensitized solar cells (DSSCs) type Donor-π-Acceptor involving carbazole as donors and cyanoacrylic acid as acceptors of the electrons. These cells are linked by different π-spacer unit's, with the aim to develop new organic dyes with high-performance optoelectronic properties. Different units have been introduced in the π-bridge in order to investigate their effects on the structural and optoelectronic properties of the studied compounds, as well as their adsorbed compounds-titanium dioxide (TiO2) semi-conductor. We evaluated and assessed the important relevant parameters that influence the performance of photovoltaic cell to measure their involvement in the short-circuit photocurrent density (Jsc). Using Density Functional Theory (DFT) and Time-Dependent-BHandHLYP, the geometrical and optoelectronics properties have been predicted theoretically. The results obtained indicate that introducing the oxazole (S5) and thiazole (S6) molecules in the π-spacer have significant impact on the geometric properties for D5-D6 dyes. This results in the fact that dye D5 has a planar structure. Also, the insertion of the thiophene, oxazole and thiazole units improves the energies of the HOMO and LUMO molecular orbitals of D1, D5, and D6 dyes. Moreover, these results show the ability of electron transfer and regeneration from the studied sensitizers (D1-D6). Also, it can be noted that the application of the pyrrole group in the π-spacer moiety of the dye (D2) improves the electron's transfer performance with a lower regeneration motive force ΔGreg, a more negative injection driving forces (ΔGinject), and a higher values of open circuit-voltage (Voc).
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Bridge effect on the charge transfer and optoelectronic properties of triphenylamine-based organic dye sensitized solar cells: theoretical approach. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04184-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Rodrigues AI, Figueira CA, Gomes CSB, Suresh D, Ferreira B, Di Paolo RE, Pereira DDS, Dias FB, Calhorda MJ, Morgado J, Maçanita AL, Gomes PT. Boron complexes of aromatic 5-substituted iminopyrrolyl ligands: synthesis, structure, and luminescence properties. Dalton Trans 2019; 48:13337-13352. [PMID: 31429840 DOI: 10.1039/c9dt02718a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A group of new mononuclear boron chelate compounds [BPh2{κ2N,N'-5-R-NC4H2-2-C(H)[double bond, length as m-dash]N-Ar}] (R = Ar = C6H57; R = C6H5, Ar = 2,6-iPr2C6H38; R = Anthracen-9-yl (Anthr), Ar = C6H59; R = Anthr, Ar = 2,6-iPr2C6H310) were synthesized via the reaction of B(C6H5)3 with the corresponding 5-substituted 2-(N-arylformimino)pyrrole ligand precursors 3-6. These complexes were prepared in order to evaluate the luminescence potential derived from the substitution of the position 5 of the pyrrolyl ring with an aromatic group. Compounds 7-10 were photophysically characterized in solution and in the solid state. The 5-phenyl-2-iminopyrrolyl-BPh2 complexes 7 and 8 are blue emitters and have enhanced photoluminescence quantum yields in the solid state (ΦPL) up to 0.95, whereas the 5-anthracenyl derivatives 9 and 10 have green-bluish fluorescence and a ΦPL of 0.49 and 0.24, respectively. DFT and TDDFT studies were performed, considering the effect of solvent and dispersion, in order to show how the geometries of compounds 7-10 changed from the ground to the excited state, to assign electronic transitions, and to rationalize the observed luminescence. These materials were applied in organic light-emitting diodes (OLEDs), with various device structures, the best showing an external quantum efficiency of 2.75% together with a high luminance of 23 530 cd m-2.
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Affiliation(s)
- Ana I Rodrigues
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Cláudia A Figueira
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Clara S B Gomes
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - D Suresh
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal. and School of Chemical and Biotechnology, SASTRA University, Thanjavur - 613 401, India
| | - Bruno Ferreira
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Roberto E Di Paolo
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | | | - Fernando B Dias
- Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
| | - Maria José Calhorda
- Centro de Química e Bioquímica and BioISI -Biosystems & Integrative Sciences Institute, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, 1749-016 Lisboa, Portugal
| | - Jorge Morgado
- Instituto de Telecomunicações, Av. Rovisco Pais, 1049-001 Lisboa, Portugal and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - António L Maçanita
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Pedro T Gomes
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
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Cruz TFC, Pereira LCJ, Waerenborgh JC, Veiros LF, Gomes PT. Hydroboration of terminal olefins with pinacolborane catalyzed by new 2-iminopyrrolyl iron(ii) complexes. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02319k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
New Fe(ii) mono(2-iminopyrrolyl) complexes catalyze the hydroboration of terminal olefins with pinacolborane via a borane oxidative addition pathway.
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Affiliation(s)
- Tiago F. C. Cruz
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - Laura C. J. Pereira
- C2TN-Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - João C. Waerenborgh
- C2TN-Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Luís F. Veiros
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - Pedro T. Gomes
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
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Figueira CA, Lopes PS, Gomes CSB, Gomes JCS, Veiros LF, Lemos F, Gomes PT. Neutral Mono(5-aryl-2-iminopyrrolyl)nickel(II) Complexes as Precatalysts for the Synthesis of Highly Branched Ethylene Oligomers: Preparation, Molecular Characterization, and Catalytic Studies. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00669] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Figueira CA, Lopes PS, Gomes CSB, Gomes JCS, Lemos F, Gomes PT. New phenyl-nickel complexes of bulky 2-iminopyrrolyl chelates: synthesis, characterisation and application as aluminium-free catalysts for the production of hyperbranched polyethylene. Dalton Trans 2018; 47:15857-15872. [PMID: 30358779 DOI: 10.1039/c8dt02824a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A family of mono(2-iminopyrrolyl) complexes with the general formula [Ni{κ2N,N'-5-(aryl)-NC4H2-2-C(H)[double bond, length as m-dash]N-2,6-(aryl)}(C6H5)(PPh3)] were obtained from the reaction of the sodium salts of the newly synthesised 5-aryl-2-(N-arylformimino)pyrroles with the square planar complex trans-[Ni(C6H5)(PPh3)2Cl]. These new iminopyrrole ligand precursors, designed with increasing bulkiness and different electronic properties, and their corresponding nickel(ii) complexes were characterised by NMR spectroscopy and elemental analysis, and their structural features were analysed by single crystal X-ray diffraction. The nickel complexes were tested as aluminium-free catalysts for the polymerisation of ethylene, at low to moderate pressures and different temperatures and in the absence or presence of the phosphine scavenger [Ni(COD)2], giving rise to catalytic activities in the range of 3.61-73.12 kgPE molNi-1 h-1 bar-1. The polyethylene products formed in these catalytic reactions were characterised by GPC/SEC and NMR spectroscopy. Generally, low molecular weight (Mn 510-1300 g mol-1) low viscosity oils were obtained, presenting high branching degrees (80-125 branches per 1000 C atoms), which are characteristic of hyperbranched polyethylene products. In particular, polymerisation reactions using catalyst 7 led to higher viscosity oils with molecular weights between 11 000 and 20 000 g mol-1, and branching degrees of 100-120 branches per 1000 C atoms.
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Affiliation(s)
- Cláudia A Figueira
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal.
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Odagi M, Araki H, Min C, Yamamoto E, Emge TJ, Yamanaka M, Seidel D. Insights into the Structure and Function of a Chiral Conjugate‐Base‐Stabilized Brønsted Acid Catalyst. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801024] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Minami Odagi
- Center for Heterocyclic Compounds Department of Chemistry University of Florida 32611 Gainesville Florida USA
| | - Hiroshi Araki
- Department of Chemistry and Chemical Biology of Rutgers The State University of New Jersey 08854 Piscataway NJ USA
| | - Chang Min
- Department of Chemistry and Chemical Biology of Rutgers The State University of New Jersey 08854 Piscataway NJ USA
| | - Eri Yamamoto
- Department of Chemistry Faculty of Science Rikkyo University 3‐34‐1 Nishi‐Ikebukuro 171‐8501 Toshima‐ku Tokyo Japan
| | - Thomas J. Emge
- Department of Chemistry and Chemical Biology of Rutgers The State University of New Jersey 08854 Piscataway NJ USA
| | - Masahiro Yamanaka
- Department of Chemistry Faculty of Science Rikkyo University 3‐34‐1 Nishi‐Ikebukuro 171‐8501 Toshima‐ku Tokyo Japan
| | - Daniel Seidel
- Center for Heterocyclic Compounds Department of Chemistry University of Florida 32611 Gainesville Florida USA
- Department of Chemistry and Chemical Biology of Rutgers The State University of New Jersey 08854 Piscataway NJ USA
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Cruz TF, Figueira CA, Waerenborgh JC, Pereira LC, Li Y, Lescouëzec R, Gomes PT. Synthesis, characterization and magnetism of homoleptic bis(5-aryl-2-iminopyrrolyl) complexes of iron(II) and cobalt(II). Polyhedron 2018. [DOI: 10.1016/j.poly.2018.06.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Cruz TFC, Lopes PS, Pereira LCJ, Veiros LF, Gomes PT. Hydroboration of Terminal Olefins with Pinacolborane Catalyzed by New Mono(2-Iminopyrrolyl) Cobalt(II) Complexes. Inorg Chem 2018; 57:8146-8159. [PMID: 29953212 DOI: 10.1021/acs.inorgchem.8b00568] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The 5-substituted 2-aryliminopyrrolyl ligand precursors of the type 5-R-2-[ N-(2,6-diisopropylphenyl)formimino]-1 H-pyrrole (R = 2,6-Me2-C6H3 (1a), 2,4,6-iPr3-C6H2 (1b), 2,4,6-Ph3-C6H3 (1c; reported in this work), anthracen-9-yl (1d), CPh3 (1e; reported in this work)) were treated with K[N(SiMe3)2] in toluene to yield the respective 5-R-2-[ N-(2,6-diisopropylphenyl)formimino]pyrrolyl potassium salts 2a-e in high yields. The paramagnetic 15-electron Co(II) complexes of the type [Co{κ2 N,N'-5-R-NC4H2-2-C(H)═N(2,6-iPr2-C6H3)}(Py)Cl] (3a-e; Py = pyridine) were prepared by salt metathesis of CoCl2(Py)4 with the respective potassium salts 2a-e in moderate to good yields. When the CoCl2(THF)1.5 precursor was combined with the in situ prepared sodium salt of ligand precursor 1b, the trinuclear complex [Co{κ2 N, N'-5-(2,4,6-iPr3-C6H2)-NC4H2-2-C(H)═N(2,6-iPr2-C6H3)}(μ-Cl)]2[(μ-Cl)2Co(THF)2] (4) was obtained in high yields. Complexes 3a-e have high-spin electronic configurations both in solution and in the solid state. X-ray diffraction studies of complexes 3a,e confirmed distorted tetrahedral coordination geometries. Complex 4, on the other hand, is a linear trinuclear Co(II)-Co(II)-Co(II) complex with two terminal distorted tetrahedral four-coordinate sites and a central octahedral six-coordinate site, all in the high-spin state, S = 3/2, as confirmed by the magnetization measurements and DFT calculations. Solid-state magnetic measurements in both complexes 3a and 4 point to paramagnetic behavior with a significant contribution of spin-orbit coupling. Additionally, intramolecular antiferromagnetic coupling of the adjacent cobalt atoms is observed in 4. The Co(II) family 3a-d, on activation with K(HBEt3), catalyzed the hydroboration of several α-olefins with pinacolborane, in good to high yields (50-80%). This system almost exclusively yielded the anti-Markovnikov (a-Mk) addition product, except when styrene was used, where the selectivity in the Markovnikov (Mk) product increased with increasing steric bulkiness of the 5-R-2-iminopyrrolyl substituent, with the a-Mk:Mk molar ratio varying from 2.33:1 (3a, R = 2,6-Me2-C6H3) to 0.75:1 (3c, R = 2,4,6-Ph3-C6H3). Preliminary mechanistic studies indicate that the activation by K(HBEt3) gave rise to a Co(I) species, the catalyst system likely following an oxidative addition pathway.
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Affiliation(s)
- Tiago F C Cruz
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
| | - Patrícia S Lopes
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
| | - Laura C J Pereira
- C2TN-Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico , Universidade de Lisboa , 2695-066 Bobadela LRS , Portugal
| | - Luís F Veiros
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
| | - Pedro T Gomes
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
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Wang F, He Y, Tian M, Zhang X, Fan X. Synthesis of α-Formylated N-Heterocycles and Their 1,1-Diacetates from Inactivated Cyclic Amines Involving an Oxidative Ring Contraction. Org Lett 2018; 20:864-867. [PMID: 29345128 DOI: 10.1021/acs.orglett.7b04029] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A novel synthesis of pyrrolidine-2-carbaldehydes or tetrahydropyridine-2-carbaldehydes from the cascade reactions of N-arylpiperidines or N-arylazepanes is presented. Mechanistically, the formation of the title compounds involves an unprecedented oxidative ring contraction of inactivated cyclic amines via Cu(OAc)2/KI/O2-promoted oxidative cleavage and reformation of the C-N bond. Interestingly, when PhI(OAc)2 was used in place of KI, 1,1-diacetates of the corresponding aldehydes were directly obtained with good efficiency. To the best of our knowledge, this is the first example of regioselective C(sp3)-H bond functionalization and C(sp3)-N bond activation of saturated cyclic amines using copper salt and oxygen.
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Affiliation(s)
- Fang Wang
- School of Environment, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Henan Normal University , Xinxiang, Henan 453007, China
| | - Yan He
- School of Environment, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Henan Normal University , Xinxiang, Henan 453007, China
| | - Miaomiao Tian
- School of Environment, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Henan Normal University , Xinxiang, Henan 453007, China
| | - Xinying Zhang
- School of Environment, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Henan Normal University , Xinxiang, Henan 453007, China
| | - Xuesen Fan
- School of Environment, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Henan Normal University , Xinxiang, Henan 453007, China
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Montis R, Arca M, Aragoni MC, Bauzá A, Demartin F, Frontera A, Isaia F, Lippolis V. Hydrogen- and halogen-bond cooperativity in determining the crystal packing of dihalogen charge-transfer adducts: a study case from heterocyclic pentatomic chalcogenone donors. CrystEngComm 2017. [DOI: 10.1039/c7ce01035d] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synergic cooperation between HB and XB interactions determines the supramolecular architectures in dihalogen CT adducts of hydantoin-like chalcogen donors.
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Affiliation(s)
- Riccardo Montis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (CA)
- Italy
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (CA)
- Italy
| | - M. Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (CA)
- Italy
| | - Antonio Bauzá
- Departament de Quimica
- Universitat de les Illes Balears
- Palma de Mallorca (Baleares)
- Spain
| | - Francesco Demartin
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Antonio Frontera
- Departament de Quimica
- Universitat de les Illes Balears
- Palma de Mallorca (Baleares)
- Spain
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (CA)
- Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (CA)
- Italy
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