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Kawase Y, Tsujimoto S, Obayashi T, Kimura S, Ito K, Ikoma S, Ota K, Hashizume D, Matsuo T. Selective monooxygenation of diphosphenes with molecular oxygen. Dalton Trans 2024; 53:1956-1960. [PMID: 38235826 DOI: 10.1039/d3dt04348g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
The O2 splitting mediated by the bulky Rind-based diphosphenes resulted in the clean formation of the mixed-valent diphosphorus compounds, diphosphene oxides, with P2O moieties. Their structural features and electronic properties have been clearly characterized by experimental and theoretical methods.
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Affiliation(s)
- Yuria Kawase
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
| | - Shota Tsujimoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
| | - Tomohiro Obayashi
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
| | - Satoshi Kimura
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
| | - Kanta Ito
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
| | - Shotaro Ikoma
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
| | - Kei Ota
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Tsukasa Matsuo
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
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Rahman MM, Zhao Q, Meng G, Lalancette R, Szostak R, Szostak M. [IPr #-PEPPSI]: A Well-Defined, Highly Hindered and Broadly Applicable Pd(II)-NHC (NHC = N-Heterocyclic Carbene) Precatalyst for Cross-Coupling Reactions. Molecules 2023; 28:5833. [PMID: 37570803 PMCID: PMC10421006 DOI: 10.3390/molecules28155833] [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: 06/28/2023] [Revised: 07/25/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
In this Special Issue, "Featured Papers in Organometallic Chemistry", we report on the synthesis and characterization of [IPr#-PEPPSI], a new, well-defined, highly hindered Pd(II)-NHC precatalyst for cross-coupling reactions. This catalyst was commercialized in collaboration with MilliporeSigma, Burlington, ON, Canada (no. 925489) to provide academic and industrial researchers with broad access to reaction screening and optimization. The broad activity of [IPr#-PEPPSI] in cross-coupling reactions in a range of bond activations with C-N, C-O, C-Cl, C-Br, C-S and C-H cleavage is presented. A comprehensive evaluation of the steric and electronic properties is provided. Easy access to the [IPr#-PEPPSI] class of precatalysts based on modular pyridine ligands, together with the steric impact of the IPr# peralkylation framework, will facilitate the implementation of well-defined, air- and moisture-stable Pd(II)-NHC precatalysts in chemistry research.
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Affiliation(s)
- Md. Mahbubur Rahman
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, USA; (M.M.R.); (Q.Z.); (G.M.); (R.L.)
| | - Qun Zhao
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, USA; (M.M.R.); (Q.Z.); (G.M.); (R.L.)
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430000, China
| | - Guangrong Meng
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, USA; (M.M.R.); (Q.Z.); (G.M.); (R.L.)
| | - Roger Lalancette
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, USA; (M.M.R.); (Q.Z.); (G.M.); (R.L.)
| | - Roman Szostak
- Department of Chemistry, Wroclaw University, F. Joliot-Curie 14, 50-383 Wroclaw, Poland;
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, USA; (M.M.R.); (Q.Z.); (G.M.); (R.L.)
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Liu J, Yang Y, Shi W, Yu ZX. Metalla-Claisen Rearrangement in Gold-Catalyzed [4+2] Reaction: A New Elementary Reaction Suggested for Future Reaction Design. Angew Chem Int Ed Engl 2023; 62:e202217654. [PMID: 36598873 DOI: 10.1002/anie.202217654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 01/05/2023]
Abstract
We report here computational evidence for a metalla-Claisen rearrangement (MCR) in the case of gold-catalyzed [4+2] cycloaddition reaction of yne-dienes. The [4+2] reaction starts from exo cyclopropanation, followed by MCR and reductive elimination. The cyclopropane moiety formed in the first step is crucial for a low barrier of the MCR step. In addition, the importance of an appropriate combination of the tether group and the terminal substituent on alkyne in the yne-diene substrates was studied. The mechanism of rhodium-catalyzed [4+2] reaction of yne-dienes was also investigated to see whether an MCR mechanism is involved or not. The findings and new understanding hereby reported represent an important advance in the catalysis field.
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Affiliation(s)
- Jing Liu
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Yusheng Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, China
| | - Weiming Shi
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, China
| | - Zhi-Xiang Yu
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.,Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, China
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Dai ZQ, Song L, Wang YY, Wang JT, Jia YF, Zhang DQ, Yan S, Chai WX. Two Luminescent Materials of CuI Clusters Based on Mono-phosphine Ligands and Their Fluorescence Sensing Properties. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02401-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Doust Mohammadi M, Abdullah HY, Biskos G, Bhowmick S. Adsorbing CNCl on pristine, C-, and Al-doped boron nitride nanotubes: A Density Functional Theory study. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Wang L, Pan S, Wang G, Zeng X, Zhou M, Frenking G. Triple bonding between beryllium and nitrogen in HNBeCO. Chem Commun (Camb) 2022; 58:8532-8535. [PMID: 35802125 DOI: 10.1039/d2cc02969c] [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
The HNBeCO complex is generated via the reaction of a beryllium atom with a HNCO molecule in a solid neon matrix, which is identified via infrared absorption spectroscopy with isotopic substitutions. The complex is characterized to have a linear structure with a very short Be-N bond distance. Bonding analyses indicate that the complex involves an unprecedented HNBeCO triple bond consisting of two degenerate electron-sharing π bonds and a dative σ bond with the π bonds being much stronger than the σ bond.
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Affiliation(s)
- Lina Wang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai, 200438, China.
| | - Sudip Pan
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, D-35043, Marburg, Germany.
| | - Guanjun Wang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai, 200438, China.
| | - Xiaoqing Zeng
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai, 200438, China.
| | - Mingfei Zhou
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai, 200438, China.
| | - Gernot Frenking
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, D-35043, Marburg, Germany. .,Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China.,Donostia International Physics Center (DIPC), P.K. 1072, 20080 Donostia, Euskadi, Spain
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8
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Adsorption and Breaking of Hazardous Methyl Mercury on Hybrid Structures of Ionic Liquids and ZnO Nanoclusters. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Kuroda A, Fujita N, Horita T, Ota K, Rosas-Sánchez A, Hoshino M, Hashizume D, Matsuo T. Formation and Reactions of Ge=O Double-Bonded Species Bearing EMind Groups. CHEM LETT 2022. [DOI: 10.1246/cl.220222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Airi Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Naoko Fujita
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Tomomi Horita
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Kei Ota
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Alfredo Rosas-Sánchez
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán #1421, esq. Olímpica, C.P. 44430 Guadalajara, Jalisco, México
| | - Manabu Hoshino
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Tsukasa Matsuo
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
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Interaction of the Serine Amino Acid with BNNT, BNAlNT, and BC2NNT. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-06916-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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11
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Mohammadi MD, Abdullah HY, Kalamse V, Chaudhari A. Interaction of Fluorouracil drug with boron nitride nanotube, Al doped boron nitride nanotube and BC2N nanotube. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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Martínez JP, Trzaskowski B. Structural and Electronic Properties of Boranes Containing Boron‐Chalcogen Multiple Bonds and Stabilized by Amido Imidazoline‐2‐imine Ligands. Chemistry 2022; 28:e202103997. [DOI: 10.1002/chem.202103997] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Indexed: 11/09/2022]
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13
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Sinhababu S, Radzhabov MR, Telser J, Mankad NP. Cooperative Activation of CO 2 and Epoxide by a Heterobinuclear Al-Fe Complex via Radical Pair Mechanisms. J Am Chem Soc 2022; 144:3210-3221. [PMID: 35157448 DOI: 10.1021/jacs.1c13108] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Activation of inert molecules like CO2 is often mediated by cooperative chemistry between two reactive sites within a catalytic assembly, the most common form of which is Lewis acid/base bifunctionality observed in both natural metalloenzymes and synthetic systems. Here, we disclose a heterobinuclear complex with an Al-Fe bond that instead activates CO2 and other substrates through cooperative behavior of two radical intermediates. The complex Ldipp(Me)AlFp (2, Ldipp = HC{(CMe)(2,6-iPr2C6H3N)}2, Fp = FeCp(CO)2, Cp = η5-C5H5) was found to insert CO2 and cyclohexene oxide, producing LdippAl(Me)(μ:κ2-O2C)Fp (3) and LdippAl(Me)(μ-OC6H10)Fp (4), respectively. Detailed mechanistic studies indicate unusual pathways in which (i) the Al-Fe bond dissociates homolytically to generate formally AlII and FeI metalloradicals, then (ii) the metalloradicals add to substrate in a pairwise fashion initiated by O-coordination to Al. The accessibility of this unusual mechanism is aided, in part, by the redox noninnocent nature of Ldipp that stabilizes the formally AlII intermediates, instead giving them predominantly AlIII-like physical character. The redox noninnocent nature of the radical intermediates was elucidated through direct observation of LdippAl(Me)(OCPh2) (22), a metalloradical species generated by addition of benzophenone to 2. Complex 22 was characterized by X-band EPR, Q-band EPR, and ENDOR spectroscopies as well as computational modeling. The "radical pair" pathway represents an unprecedented mechanism for CO2 activation.
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Affiliation(s)
- Soumen Sinhababu
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Maxim R Radzhabov
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Joshua Telser
- Department of Biological, Physical and Health Sciences, Roosevelt University, Chicago, Illinois 60605, United States
| | - Neal P Mankad
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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Sovera V, Martínez S, Umpiérrez D, Vila MA, Gonzalez D, Seoane G, Veiga N, Carrera I. Synthesis of Azido‐Dienediols by Enzymatic Dioxygenation of Benzylazides: An Experimental and Theoretical Study. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Victoria Sovera
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - Sebastián Martínez
- Área Química Inorgánica Departamento Estrella Campos Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - Diego Umpiérrez
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
- Laboratorio de Biocatálisis y Biotransformaciones Departamento de Química Orgánica Departamento de Biociencias Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - María Agustina Vila
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
- Laboratorio de Biocatálisis y Biotransformaciones Departamento de Química Orgánica Departamento de Biociencias Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - David Gonzalez
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
- Laboratorio de Biocatálisis y Biotransformaciones Departamento de Química Orgánica Departamento de Biociencias Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - Gustavo Seoane
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
- Laboratorio de Biocatálisis y Biotransformaciones Departamento de Química Orgánica Departamento de Biociencias Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - Nicolás Veiga
- Área Química Inorgánica Departamento Estrella Campos Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - Ignacio Carrera
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
- Laboratorio de Biocatálisis y Biotransformaciones Departamento de Química Orgánica Departamento de Biociencias Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
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Smajlagic I, White B, Azeez O, Pilkington M, Dudding T. Organocatalysis Linked to Charge-Enhanced Acidity with Superelectrophilic Traits. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ivor Smajlagic
- Department of Chemistry, Brock University, St. Catharines L2S 3A1, Canada
| | - Brandon White
- Department of Chemistry, Brock University, St. Catharines L2S 3A1, Canada
| | - Oyindamola Azeez
- Department of Chemistry, Brock University, St. Catharines L2S 3A1, Canada
| | - Melanie Pilkington
- Department of Chemistry, Brock University, St. Catharines L2S 3A1, Canada
| | - Travis Dudding
- Department of Chemistry, Brock University, St. Catharines L2S 3A1, Canada
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Estrada AL, Wititsuwannakul T, Kromm K, Hampel F, Hall MB, Gladysz J. Syntheses, Rearrangements, and Structural Analyses of Unsaturated Nitrogen Donor Ligands Derived from Diphenyldiazomethane and the Chiral Rhenium Lewis Acid [(η5-C5H5)Re(NO)(PPh3)]+. Dalton Trans 2022; 51:7305-7320. [DOI: 10.1039/d2dt00890d] [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
Diphenyldiazomethane and a labile chlorobenzene complex of [(η5-C5H5)Re(NO)(PPh3)]+ BF4– react to give the η1 adduct [(η5-C5H5)Re(NO)(PPh3)(NNCPh2)]+ BF4– (73%). When this is con-ducted in the presence of copper powder, a 3-phenyl-1H-indazole...
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Mohammadi MD, Abdullah HY. DFT Study for Adsorbing of Bromine Monochloride onto BNNT (5,5), BNNT (7,0), BC 2NNT (5,5), and BC 2NNT (7,0). JOURNAL OF COMPUTATIONAL BIOPHYSICS AND CHEMISTRY 2021. [DOI: 10.1142/s2737416521500472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The study of intermolecular interactions is of great importance. This study attempted to quantitatively examine the interactions between bromine monochloride (BrCl) with pristine boron nitride nanotube (BNNT) armchair (5,5) and zigzag (7,0) as well as armchair (5,5) BC2NNT and zigzag (7,0) BC2NNT in vacuum. Quantum mechanical studies of such systems are possible in the density functional theory (DFT) framework. For this purpose, various functionals, such as B3LYP-D3, [Formula: see text]B97XD, and M062X, have been used. One of the most suitable basis functionals for the systems studied in this research is 6-311G (d), which has been used in both optimization calculations and calculations related to wave function analyses. The main part of this work is the study of various analyses that reveal the nature of the intermolecular interactions between the two components introduced above. The results of conceptual DFT, natural bond orbital, non-covalent interactions, and quantum theory of atoms in molecules (QTAIM) were consistent and in favor of physical adsorption in all systems. Gallium had more adsorption energy than other dopants. The HOMO–LUMO energy gaps were as follows: BNNT (5,5): 10.296, BNNT (7,0): 9.015, BC2NNT (5,5): 7.022, and BC2NNT (7,0): 5.979[Formula: see text]eV at B3LYP-D3/6-311G (d) model chemistry. The strongest interaction is related to the BC2NNT (7,0)/BrCl cluster: [Formula: see text][Formula: see text]eV. The results of QTAIM and NCI analysis identified the intermolecular interactions of the type of strong van der Waals interaction for these nanotubes. The sensitivity of the adsorption increased when a gas molecule interacted with carbon-doped BNNT, and the change in the frontier orbital gap could be used to design nanosensors to detect BrCl gas.
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Affiliation(s)
| | - Hewa Y. Abdullah
- Physics Education Department, Faculty of Education, Tishk International University, Erbil 44001, Kurdistan Region, Iraq
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Non-covalent interactions of cysteine onto C 60, C 59Si, and C 59Ge: a DFT study. J Mol Model 2021; 27:330. [PMID: 34709483 DOI: 10.1007/s00894-021-04960-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/20/2021] [Indexed: 10/20/2022]
Abstract
The study of intermolecular interactions is of great importance. This study attempted to quantitatively examine the interactions between cysteine (C3H7NO2S) and fullerene nanocages, C60, in vacuum. As the frequent introduction of elements as impurities into the structure of nanomaterials can increase the intensity of intermolecular interactions, nanocages doped with silicon and germanium have also been studied as adsorbents, C59Si and C59Ge. Quantum mechanical studies of such systems are possible in the density functional theory (DFT) framework. For this purpose, various functionals, such as B3LYP-D3, ωB97XD, and M062X, have been used. One of the most suitable basis functionals for the systems studied in this research is 6-311G (d), which has been used in both optimization calculations and calculations related to wave function analyses. The main part of this work is the study of various analyses that reveal the nature of the intermolecular interactions between the two components introduced above. The results of conceptual DFT, natural bond orbital, non-covalent interactions, and quantum theory of atoms in molecules were consistent and in favor of physical adsorption in all systems. Germanium had more adsorption energy than other dopants. The HOMO-LUMO energy gaps were as follows: C60: 5.996, C59Si: 5.309, and C59Ge: 5.188 eV at B3LYP-D3/6-311 G (d) model chemistry. The sensitivity of the adsorption increased when an amino acid molecule interacted with doped C60, and this capability could be used to design nanocarrier to carry cysteine amino acid.
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Ab initio investigation for the adsorption of acrolein onto the surface of C60, C59Si, and C59Ge: NBO, QTAIM, and NCI analyses. Struct Chem 2021. [DOI: 10.1007/s11224-021-01847-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Mohammadi MD, Abdullah HY, Biskos G, Bhowmick S. Effect of Al- and Ga-doping on the adsorption of H 2 SiCl 2 onto the outer surface of boron nitride nanotube: a DFT study. CR CHIM 2021. [DOI: 10.5802/crchim.87] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Mohammadi MD, Abdullah HY, Bhowmick S, Biskos G. A comprehensive investigation of the intermolecular interactions between CH2N2 and X12Y12 (X = B, Al, Ga; Y = N, P, As) nanocages. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0473] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this paper, we have theoretically determined the possibility of adsorption of the gaseous CH2N2 molecule on the surface of X12Y12 nanocages, where X = B, Al, Ga and Y = N, P, As. The electronic structure calculations have been performed by density functional theory (DFT) using four functionals (i.e., B3LYP-D3, M06-2X, ωB97XD, and CAM-B3LYP), together with the 6-311G(d) basis function. We find that the adsorption of CH2N2 on top of the X–Y bond of the nanocage is the most preferred site for adsorption. The adsorption process is accompanied by a charge-transfer phenomenon, which results in a strong bond between the terminal N atom of diazomethane and the X atom of the nanocage. This gives rise to significant changes in the highest and lowest occupied molecular orbital (HOMO and LUMO, respectively) energies and thus attribute properties to the nanocages that enable them to act as building blocks of CH2N2 sensing materials.
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Affiliation(s)
| | - Hewa Y. Abdullah
- Physics Education Department, Faculty of Education, Tishk International University, Erbil 44001, Iraq
| | - Somnath Bhowmick
- Climate & Atmosphere Research Centre, The Cyprus Institute, 20 K. Kavafi Street, Nicosia 2121, Cyprus
| | - George Biskos
- Climate & Atmosphere Research Centre, The Cyprus Institute, 20 K. Kavafi Street, Nicosia 2121, Cyprus
- Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft 2628 CN, Netherlands
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Castillo Molina DA, Wititsuwannakul T, Hampel F, Hall MB, Gladysz JA. Syntheses, Structures, Reactivities, and Basicities of Quinolinyl and Isoquinolinyl Complexes of an Electron Rich Chiral Rhenium Fragment and Their Electrophilic Addition Products. Chemistry 2021; 27:13399-13417. [PMID: 34228842 DOI: 10.1002/chem.202101949] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Indexed: 11/10/2022]
Abstract
Reactions of Li+ [(η5 -C5 H5 )Re(NO)(PPh3 )]- with 2- and 4-chloroquinoline or 1-chloroisoquinoline give the corresponding σ quinolinyl and isoquinolinyl complexes 3, 6, and 8. With 3 and 8 there is further protonation to yield HCl adducts, but additions of KH give the free bases. Treatment of 3 with HBF4 ⋅OEt2 or H(OEt2 )2 + BArf - gives the quinolinium salts [(η5 -C5 H5 )Re(NO)(PPh3 )(C(NH)C(CH)4 C(CH)(CH))]+ X- (3-H+ X- ; X- =BF4 - /BArf - , 94-98 %). Addition of CF3 SO3 CH3 to 3, 6, or 8 affords the corresponding N-methyl quinolinium salts. In the case of [(η5 -C5 H5 )Re(NO)(PPh3 )(C(NCH3 )C(CH)4 C(CH)(CH))]+ CF3 SO3 - (3-CH3 + CF3 SO3 - ), addition of CH3 Li gives the dihydroquinolinium complex (SRe RC ,RRe SC )-[(η5 -C5 H5 )Re(NO)(PPh3 )(C(NCH3 )C(CH)4 C(CHCH3 )(CH2 ))]+ CF3 SO3 - ((SRe RC ,RRe SC )-5+ CF3 SO3 - , 76 %) in diastereomerically pure form. Crystal structures of 3-H+ BArf - , 3-CH3 + CF3 SO3 - , (SRe RC , RRe SC )-5+ Cl- , and 6-CH3 + CF3 SO3 - show that the quinolinium ligands adopt Re⋅⋅⋅C conformations that maximize overlap of their acceptor orbitals with the rhenium fragment HOMO, minimize steric interactions with the bulky PPh3 ligand, and promote various π interactions. NMR experiments establish the Brønsted basicity order 3>8>6, with Ka (BH+ ) values >10 orders of magnitude greater than the parent heterocycles, although they remain less active nucleophilic catalysts in the reactions tested. DFT calculations provide additional insights regarding Re⋅⋅⋅C bonding and conformations, basicities, and the stereochemistry of CH3 Li addition.
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Affiliation(s)
- Dante A Castillo Molina
- Institut für Organische Chemie and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 42, 91054, Erlangen, Germany
| | - Taveechai Wititsuwannakul
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - Frank Hampel
- Institut für Organische Chemie and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 42, 91054, Erlangen, Germany
| | - Michael B Hall
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - John A Gladysz
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, 77842-3012, USA
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Photochemical Properties and Stability of BODIPY Dyes. Int J Mol Sci 2021; 22:ijms22136735. [PMID: 34201648 PMCID: PMC8267640 DOI: 10.3390/ijms22136735] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/14/2021] [Accepted: 06/16/2021] [Indexed: 01/10/2023] Open
Abstract
The present study is devoted to the combined experimental and theoretical description
of the photophysical properties and photodegradation of the new boron-dipyrromethene (BODIPY)
derivatives obtained recently for biomedical applications, such as bacteria photoinactivation
(Piskorz et al., Dyes and Pigments 2020, 178, 108322). Absorption and emission spectra for a wide
group of solvents of different properties for the analyzed BODIPY derivatives were investigated
in order to verify their suitability for photopharmacological applications. Additionally, the photostability
of the analyzed systems were thoroughly determined. The exposition to the UV light was
found first to cause the decrease in the most intensive absorption band and the appearance of the
hypsochromically shifted band of similar intensity. On the basis of the chromatographic and computational
study, this effect was assigned to the detachment of the iodine atoms from the BODIPY core.
After longer exposition to UV light, photodegradation occurred, leading to the disappearance of the
intensive absorption bands and the emergence of small intensity signals in the strongly blue-shifted
range of the spectrum. Since the most intensive bands in original dyes are ascribed to the molecular
core bearing the BF2 moiety, this result can be attributed to the significant cleavage of the BF2 ring. In
order to fully characterize the obtained molecules, the comprehensive computational chemistry study
was performed. The influence of the intermolecular interactions for their absorption in solution was
analyzed. The theoretical data entirely support the experimental outcomes.
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Mohammadi MD, Abdullah HY, Suvitha A. The Adsorption of 1-Chloro-1,2,2,2-Tetrafluoroethane Onto the Pristine, Al-, and Ga-Doped Boron Nitride Nanosheet. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY, TRANSACTIONS A: SCIENCE 2021. [DOI: 10.1007/s40995-021-01117-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Li J, Goffitzer DJ, Xiang M, Chen Y, Jiang W, Diefenbach M, Zhu H, Holthausen MC, Roesky HW. 1-Aza-2,4-disilabicyclo[1.1.0]butanes with Superelongated C-N σ-Bonds. J Am Chem Soc 2021; 143:8244-8248. [PMID: 34037391 DOI: 10.1021/jacs.1c03149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two silylene molecules oxidatively react under formal [1 + 2 + 1]-cycloaddition to the C≡N bond of nitriles to yield 1-aza-2,4-disilabicyclo[1.1.0]butanes (L)(Cl)Si[μ-η1,2-NC(p-RC6H4)]Si(Cl)(L) (L = PhC(NtBu)2, R = CF3 (2), F (3), Cl (4), Br (5)). The strongly folded bicyclic SiCNSi cores in 2-5 feature inverted bridgehead carbon atoms and superelongated C-N bonds [1.745(12) to 1.801(2) Å], exceeding the lengths of C-N single bonds in known silaaziridines by up to 23%. Detailed bonding analysis discloses C-N bonding interactions, sharing far-reaching similarities with the central C-C bond in [1.1.1]propellane.
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Affiliation(s)
- Jiancheng Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Daniel J Goffitzer
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Straße 7, 60438 Frankfurt am Main, Germany
| | - Meiyu Xiang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yilin Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Wenjun Jiang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Martin Diefenbach
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Straße 7, 60438 Frankfurt am Main, Germany
| | - Hongping Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Max C Holthausen
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Straße 7, 60438 Frankfurt am Main, Germany
| | - Herbert W Roesky
- Institut für Anorganische Chemie, Georg-August-Universität, 37077 Göttingen, Germany
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Mohammadi MD, Abdullah HY, Bhowmick S, Biskos G. Theoretical investigation of X12O12 (X = Be, Mg, and Ca) in sensing CH2N2: A DFT study. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113168] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Mohammadi MD, Salih IH, Abdullah HY. An Ultimate Investigation on the Adsorption of Amantadine on Pristine and Decorated Fullerenes C59X (X=Si, Ge, B, Al, Ga, N, P, and As): A DFT, NBO, and QTAIM Study. JOURNAL OF COMPUTATIONAL BIOPHYSICS AND CHEMISTRY 2020. [DOI: 10.1142/s2737416521500022] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this investigation, the feasibility of detecting the amantadine (AMD) molecule onto the outer surface of pristine fullerene (C[Formula: see text]), as well as C[Formula: see text]X ([Formula: see text], Ge, B, Al, Ga, N, P, and As) decorated structures, was carefully evaluated. For achieving this goal, a density functional theory level of study using the HSEH1PBE functional together with a 6-311G(d) basis set has been used. Subsequently, the B3LYP-D3, wB97XD and M062X functionals with a 6-311G(d) basis set were also employed to consider the single point energies. Natural bond orbital (NBO) and the quantum theory of atoms in molecules (QTAIM) were implemented using the B3LYP-D3/6-311G(d) method and the results were compatible with the electronic properties. In this regard, the total density of states (TDOSs), the Wiberg bond index (WBI), natural charge, natural electron configuration, donor–acceptor NBO interactions, and the second-order perturbation energies are performed to explore the nature of the intermolecular interactions. All of the energy calculations and population analyses denote that by adsorbing of the AMD molecule onto the surface of the considered nanostructures, the intermolecular interactions are of the type of strong physical adsorption. Among the doped fullerenes, Ge-doped structure has very high adsorption energy compared to other elements. Generally, it was revealed that the sensitivity of the adsorption will be increased when the AMD molecule interacts with the decorated fullerenes and decrease the HOMO–LUMO band gap; therefore, the change of electronic properties can be used to design suitable nanocarrier.
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Affiliation(s)
| | - Idris H. Salih
- Physics Education Department, Faculty of Education, Tishk International University, Erbil 44001, Iraq
| | - Hewa Y. Abdullah
- Physics Education Department, Faculty of Education, Tishk International University, Erbil 44001, Iraq
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28
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Mohammadi MD, Salih IH, Abdullah HY. The adsorption of chlorofluoromethane on pristine and Ge-doped silicon carbide nanotube: a PBC-DFT, NBO, and QTAIM study. MOLECULAR SIMULATION 2020. [DOI: 10.1080/08927022.2020.1834103] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Idris H. Salih
- Physics Education Department, Faculty of Education, Tishk International University, Erbil, Iraq
| | - Hewa Y. Abdullah
- Physics Education Department, Faculty of Education, Tishk International University, Erbil, Iraq
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The adsorption of chlorofluoromethane on pristine, and Al- and Ga-doped boron nitride nanosheets: a DFT, NBO, and QTAIM study. J Mol Model 2020; 26:287. [PMID: 32980919 DOI: 10.1007/s00894-020-04556-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 09/17/2020] [Indexed: 10/23/2022]
Abstract
In the present investigation, the feasibility of detecting the chlorofluoromethane (CFM) gas molecule onto the outer surface of pristine single layer boron nitride nanosheet (BNNS), as well as its aluminum (Al)- and gallium (Ga)-doped structures, was carefully evaluated. For achieving this goal, a density functional theory level of study using the Perdew, Burke, and Ernzerhof exchange-correlation (PBEPBE) functional together with a 6-311G(d) basis set has been used. Subsequently, the B3LYP, CAM-B3LYP, wB97XD, and M062X functionals with a 6-311G(d) basis set were also employed to consider the single-point energies. Natural bond orbital (NBO) and quantum theory of atoms in molecules (QTAIM) were implemented by using the B3LYP-D3/6-311G(d) method, and the results were compatible with the electronic properties. In this regard, the total density of states (TDOSs), the Wiberg bond index (WBI), natural charge, natural electron configuration, donor-acceptor natural bond orbital interactions, and the second-order perturbation energies are performed to explore the nature of the intermolecular interactions. All of the energy calculations and population analyses denote that by adsorbing of the gas molecule onto the surface of the considered nanostructures, the intermolecular interactions are of the type of strong chemical adsorption. Among the doped nanosheets, Ga-doped nanosheet has very high adsorption energy compared with other elements (i.e., Ga-doped > Al-doped > pristine). Generally, it was revealed that the sensitivity of the adsorption will be increased when the gas molecule interacts with decorated nanosheets and decrease the HOMO-LUMO band gap; therefore, the change of electronic properties can be used to design suitable nanosensors to detect CFM gas. Graphical abstract.
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30
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Doust Mohammadi M, Abdullah HY. The adsorption of bromochlorodifluoromethane on pristine and Ge-doped silicon carbide nanotube: a PBC-DFT, NBO, and QTAIM study. Struct Chem 2020. [DOI: 10.1007/s11224-020-01646-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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31
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Theoretical study of the adsorption of amantadine on pristine, Al-, Ga-, P-, and As-doped boron nitride nanosheets: a PBC-DFT, NBO, and QTAIM study. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02672-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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32
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Hernández‐Juárez M, Sánchez P, López‐Serrano J, Lara P, González‐Herrero P, Rendón N, Álvarez E, Paneque M, Suárez A. Metalated Ir–CNP Complexes Containing Imidazolin‐2‐ylidene and Imidazolidin‐2‐ylidene Donors – Synthesis, Structure, Luminescence, and Metal–Ligand Cooperative Reactivity. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000681] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Martín Hernández‐Juárez
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO‐CINQA) CSIC and Universidad de Sevilla 41092 Sevilla Spain
- Área Académica de Química Centro de Investigaciones Químicas Universidad Autónoma del Estado de Hidalgo (UAEH) Km. 14.5 Carretera Pachuca‐Tulancingo, Ciudad del Conocimiento, C.P. 42184 Mineral de la Reforma Hidalgo Mexico
| | - Práxedes Sánchez
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO‐CINQA) CSIC and Universidad de Sevilla 41092 Sevilla Spain
| | - Joaquín López‐Serrano
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO‐CINQA) CSIC and Universidad de Sevilla 41092 Sevilla Spain
| | - Patricia Lara
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO‐CINQA) CSIC and Universidad de Sevilla 41092 Sevilla Spain
| | - Pablo González‐Herrero
- Departamento de Química Inorgánica Facultad de Química Universidad de Murcia 30071 Murcia Spain
| | - Nuria Rendón
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO‐CINQA) CSIC and Universidad de Sevilla 41092 Sevilla Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO‐CINQA) CSIC and Universidad de Sevilla 41092 Sevilla Spain
| | - Margarita Paneque
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO‐CINQA) CSIC and Universidad de Sevilla 41092 Sevilla Spain
| | - Andrés Suárez
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO‐CINQA) CSIC and Universidad de Sevilla 41092 Sevilla Spain
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Shakerzadeh E, Duong LV, Pham-Ho MP, Tahmasebi E, Nguyen MT. The teetotum cluster Li 2FeB 14 and its possible use for constructing boron nanowires. Phys Chem Chem Phys 2020; 22:15013-15021. [PMID: 32597424 DOI: 10.1039/d0cp02046j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Systematic density functional theory (DFT) calculations using the TPSSh functional and the def2-TZVP basis set were carried out to identify the global energy minimum structure of the Li2FeB14 cluster. Keeping the double ring tubular shape of FeB14, capping of two Li atoms leads to a teetotum form at a low spin state, in which the Fe atom is endohedrally covered by two B7 strings, and both Li atoms are attached to Fe along the C7 axis at both sides. Calculated results show that strong electrostatic interactions between 2Li+ and Fe2- arising from Li electron transfer upon doping particularly provide a key driving force for stabilizing this charge-transfer structure. The bonding pattern of the teetotum can be understood from the hollow cylinder model (HCM). TD-DFT calculations demonstrate that this cluster can also be regarded as a useful material for transparent optoelectronic devices. Furthermore, the Li2FeB14 superatom can be used as a building block for making boron-based nanowires with metallic character. Replacement of Li atoms by Mg atoms was also found to lead to nanowires.
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Affiliation(s)
- Ehsan Shakerzadeh
- Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Long Van Duong
- Institute for Computational Science and Technology (ICST), Ho Chi Minh City, Vietnam and Department of Chemistry, Faculty of Natural Sciences, Quy Nhon University, Quy Nhon City, Vietnam
| | - My Phuong Pham-Ho
- Institute for Computational Science and Technology (ICST), Ho Chi Minh City, Vietnam
| | - Elham Tahmasebi
- Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Minh Tho Nguyen
- Computational Chemistry Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam. and Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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Fujita N, Li L, Lentz N, Konaka S, Kuroda A, Ohno R, Hayakawa N, Tamao K, Madec D, Kato T, Rosas-Sánchez A, Hashizume D, Matsuo T. Comparison of the Chemical Bonding in (Eind)2Ge=E (E = O and S): Synthesis and Characterization of Germanethione Bearing Bulky Eind Groups. CHEM LETT 2020. [DOI: 10.1246/cl.190795] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Naoko Fujita
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Liangchun Li
- Functional Elemento-Organic Chemistry Unit, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Nicolas Lentz
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062 Toulouse, France
| | - Shigeaki Konaka
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Airi Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Ryoma Ohno
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Naoki Hayakawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Kohei Tamao
- Functional Elemento-Organic Chemistry Unit, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - David Madec
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062 Toulouse, France
| | - Tsuyoshi Kato
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062 Toulouse, France
| | - Alfredo Rosas-Sánchez
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Tsukasa Matsuo
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
- Functional Elemento-Organic Chemistry Unit, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Kobayashi A, Suzuki K, Kitamura R, Yamashita M. Formation of BCBH/BCBCl Four-Membered Rings by Complexation of Boron- and Nitrogen-Substituted Acetylene with Hydro-/Chloroboranes. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00876] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Akemi Kobayashi
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Katsunori Suzuki
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Ryo Kitamura
- Department of Applied Chemistry, Graduate School of Science and Engineering, Chuo University, Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Makoto Yamashita
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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Nishiyama H, Zheng F, Inagi S, Fueno H, Tanaka K, Tomita I. Tellurophene-containing π-conjugated polymers with unique heteroatom–heteroatom interactions by post-element-transformation of an organotitanium polymer. Polym Chem 2020. [DOI: 10.1039/d0py00724b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique π-conjugated tellurophene-containing polymer that possesses fully coplanar ring units through a tellurium–oxygen interaction, was prepared by the post-element-transformation of a titanacyclopentadiene-containing reactive precursor.
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Affiliation(s)
- Hiroki Nishiyama
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology Nagatsuta-cho 4259-G1-9
- Yokohama 226-8502
- Japan
| | - Feng Zheng
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology Nagatsuta-cho 4259-G1-9
- Yokohama 226-8502
- Japan
| | - Shinsuke Inagi
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology Nagatsuta-cho 4259-G1-9
- Yokohama 226-8502
- Japan
| | - Hiroyuki Fueno
- Department of Molecular Engineering
- Graduate
- School of Engineering
- Kyoto University
- Kyoto 615-8510
| | - Kazuyoshi Tanaka
- Department of Molecular Engineering
- Graduate
- School of Engineering
- Kyoto University
- Kyoto 615-8510
| | - Ikuyoshi Tomita
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology Nagatsuta-cho 4259-G1-9
- Yokohama 226-8502
- Japan
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38
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Wang P, Zhao Y, Chapagain B, Yang Y, Liu W, Wang Y. Mechanistic insights into Cu-catalyzed enantioselective Friedel–Crafts reaction between indoles and 2-aryl-N-sulfonylaziridines. Catal Sci Technol 2020. [DOI: 10.1039/c9cy01967g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Computational studies were successfully carried out to provide mechanistic insights into LCu-catalyzed (L = (S)-Segphos ligand) Friedel–Crafts (F–C) reaction between indoles and 2-aryl-N-sulfonylaziridines.
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Affiliation(s)
- Ping Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
| | - Yang Zhao
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
| | - Biplav Chapagain
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
| | - Yonggang Yang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
| | - Wei Liu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
| | - Yong Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
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39
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Ishikawa Y, Suzuki K, Yamashita M. 9-Aza-10-boraanthracene Stabilized by Coordination of an N-Heterocyclic Carbene and Its Methylated Cation: Synthesis, Structure, and Electronic Properties. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yutaro Ishikawa
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 Japan
| | - Katsunori Suzuki
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 Japan
| | - Makoto Yamashita
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 Japan
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40
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Gutsev GL, Bozhenko KV, Gutsev LG, Utenyshev AN, Aldoshin SM. Hydrogenation of 3d-metal oxide clusters: Effects on the structure and magnetic properties. J Comput Chem 2019; 40:562-571. [PMID: 30549078 DOI: 10.1002/jcc.25739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/05/2018] [Accepted: 10/05/2018] [Indexed: 11/08/2022]
Abstract
The geometrical structures and properties of the M8 O12 , M8 O12 H8 , and M8 O12 H12 clusters are explored using density functional theory with the generalized gradient approximation for all 3d-metals M from Sc to Zn. It is found that the geometries and total spin magnetic moments of the clusters depended strongly on the 3d-atom type and the hydrogenation extent. More than the half of all of the 30 clusters had singlet lowest total energy states, which could be described as either nonmagnetic or antiferromagnetic. Hydrogenation increases the total spin magnetic moments of the M8 O12 H12 clusters when MMnNi, which become larger by four Bohr magneton than those of the corresponding unary clusters M8 . Hydrogenation substantially affects such properties as polarizability, forbidden band gaps, and dipole moments. Collective superexchange where the local total spin magnetic moments of two atom squads are coupled antiparallel was observed in antiferromagnetic singlet states of Fe8 O12 H8 and Co8 O12 H8 , whereas the lowest total energy states of their neighbors Mn8 O12 H8 and Ni8 O12 H8 are ferrimagnetic and ferromagnetic, respectively. Hydrogenation leads to a decrease in the average binding energy per atom when moving across the 3d-metal atom series. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- G L Gutsev
- Department of Physics, Florida A&M University, Tallahassee, Florida, 32307
| | - K V Bozhenko
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432, Moscow Region, Russia.,Рeoples' Friendship University of Russia (RUDN University), Moscow 117198, Russian Federation
| | - L G Gutsev
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia, 23284
| | - A N Utenyshev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432, Moscow Region, Russia
| | - S M Aldoshin
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432, Moscow Region, Russia
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41
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Shakerzadeh E, Van Duong L, Tahmasebi E, Nguyen MT. The scandium doped boron cluster B27Sc2+: a fruit can-like structure. Phys Chem Chem Phys 2019; 21:8933-8939. [DOI: 10.1039/c9cp00892f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A systematic exploration of the potential energy surface through evolutionary search algorithms was carried out to identify the most stable B27Sc2+ structure.
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Affiliation(s)
- Ehsan Shakerzadeh
- Chemistry Department
- Faculty of Science
- Shahid Chamran University of Ahvaz
- Ahvaz
- Iran
| | - Long Van Duong
- Institute for Computational Science and Technology (ICST)
- Ho Chi Minh City
- Vietnam
| | - Elham Tahmasebi
- Young Researchers and Elites Club
- Islamic Azad University
- Ahvaz
- Iran
| | - Minh Tho Nguyen
- Institute for Computational Science and Technology (ICST)
- Ho Chi Minh City
- Vietnam
- Department of Chemistry
- KU Leuven
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42
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Synthesis and Characterization of the Germathioacid Chloride Coordinated by an N-Heterocyclic Carbene §. INORGANICS 2018. [DOI: 10.3390/inorganics6030076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Carboxylic acid chlorides are useful substrates in organic chemistry. Many germanium analogues of carboxylic acid chloride have been synthesized so far. Nevertheless, all of the reported germathioacid chlorides use bidentate nitrogen ligands and contain germanium-nitrogen bonds. Our group synthesized germathioacid chloride, Ge(S)Cl{C6H3-2,6-Tip2}(Im-i-Pr2Me2), using N-heterocyclic carbene (Im-i-Pr2Me2). As a result of density functional theory (DFT) calculation, it was found that electrons are localized on sulfur, and the germanium-sulfur bond is a single bond with a slight double bond property.
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43
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Suzuki K, Numata Y, Fujita N, Hayakawa N, Tanikawa T, Hashizume D, Tamao K, Fueno H, Tanaka K, Matsuo T. A stable free tetragermacyclobutadiene incorporating fused-ring bulky EMind groups. Chem Commun (Camb) 2018; 54:2200-2203. [PMID: 29354837 DOI: 10.1039/c7cc09443d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first free cyclobutadiene (CBD) germanium analogue was obtained as room-temperature stable dark red crystals via the reaction of the bulky EMind-substituted 1,2-dichlorodigermene with lithium naphthalenide. The cyclic 4π-electron antiaromaticity is essentially stabilized by the polar Jahn-Teller distortion in the germanium CBD producing a planar rhombic-shaped charge-separated structure.
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Affiliation(s)
- Katsunori Suzuki
- Functional Elemento-Organic Chemistry Unit, RIKEN Advanced Science Institute (ASI), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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44
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Shoaf AL, Bayse CA. Trigger bond analysis of nitroaromatic energetic materials using wiberg bond indices. J Comput Chem 2018; 39:1236-1248. [PMID: 29464739 DOI: 10.1002/jcc.25186] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/10/2018] [Accepted: 01/28/2018] [Indexed: 01/22/2023]
Abstract
The identification of trigger bonds, bonds that break to initiate explosive decomposition, using computational methods could help direct the development of novel, "green" and efficient high energy density materials (HEDMs). Comparing bond densities in energetic materials to reference molecules using Wiberg bond indices (WBIs) provides a relative scale for bond activation (%ΔWBIs) to assign trigger bonds in a set of 63 nitroaromatic conventional energetic molecules. Intramolecular hydrogen bonding interactions enhance contributions of resonance structures that strengthen, or deactivate, the CNO2 trigger bonds and reduce the sensitivity of nitroaniline-based HEDMs. In contrast, unidirectional hydrogen bonding in nitrophenols strengthens the bond to the hydrogen bond acceptor, but the phenol lone pairs repel and activate an adjacent nitro group. Steric effects, electron withdrawing groups and greater nitro dihedral angles also activate the CNO2 trigger bonds. %ΔWBIs indicate that nitro groups within an energetic molecule are not all necessarily equally activated to contribute to initiation. %ΔWBIs generally correlate well with impact sensitivity, especially for HEDMs with intramolecular hydrogen bonding, and are a better measure of trigger bond strength than bond dissociation energies (BDEs). However, the method is less effective for HEDMs with significant secondary effects in the solid state. Assignment of trigger bonds using %ΔWBIs could contribute to understanding the effect of intramolecular interactions on energetic properties. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Ashley L Shoaf
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia, 23529
| | - Craig A Bayse
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia, 23529
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45
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Cabral LIL, Brás EM, Henriques MSC, Marques C, Frija LMT, Barreira L, Paixão JA, Fausto R, Cristiano MLS. Synthesis, Structure, and Cytotoxicity of a New Sulphanyl-Bridged Thiadiazolyl-Saccharinate Conjugate: The Relevance of S⋅⋅⋅N Interaction. Chemistry 2018; 24:3251-3262. [PMID: 29283203 DOI: 10.1002/chem.201705319] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Indexed: 01/08/2023]
Abstract
Reports showing that the copper concentration is considerably higher in neoplasms than in normal tissues prompted the need to develop selective copper chelators. We disclosed recently that some N-linked tetrazole-saccharinates bind selectively to copper, forming complexes that are highly cytotoxic towards cancer cells. Because tetrazole-saccharinates are photolabile, due to the photoreactivity of tetrazoles, we proposed thiadiazolyl-saccharinates as an alternative. Herein we describe the synthesis, structure, and monomeric photochemistry of a sulphanyl-bridged thiadiazolyl-saccharinate, 3-[(5-methyl-1,3,4-thiadiazol-2-yl)sulphanyl]-1,2-benzothiazole 1,1-dioxide (MTSB). The monomeric structure, charge density analysis, and characteristic infrared spectrum of MTSB were investigated theoretically, using quantum chemical calculations, and also experimentally, using matrix-isolation infrared spectroscopy. The crystal structure was investigated by combining X-ray crystallography with infrared and Raman spectroscopies. Results show that the structure of isolated MTSB is similar to that found in the crystal, with an S⋅⋅⋅N interaction clearly contributing to the structure of the molecule and of the crystal. Matrix irradiation revealed a high photostability of MTSB, compared to parent tetrazole-saccharinates and to the 5-methyl-1,3,4-thiadiazole building block, emphasizing the photostabilizing effect of the saccharyl system. Finally, in vitro toxicity assays of MTSB showed a copper concentration-dependent toxicity against cancer cells, without affecting normal cells. In particular, MTSB was most effective towards the hepatic (HepG2), neuroblastoma (SH-SY5), and lymphoma cell lines (U937). Thus, MTSB represents a promising lead for cancer chemotherapy based on chelating agents.
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Affiliation(s)
- Lília I L Cabral
- Department of Chemistry and Pharmacy, F.C.T., University of Algarve, 8005-039, Faro, Portugal.,Center of Marine Sciences, CCMar, University of Algarve, 8005-039, Faro, Portugal
| | - Elisa M Brás
- CQC, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
| | - Marta S C Henriques
- CFisUC, Department of Physics, University of Coimbra, 3004-516, Coimbra, Portugal
| | - Catia Marques
- Center of Marine Sciences, CCMar, University of Algarve, 8005-039, Faro, Portugal
| | - Luís M T Frija
- CQE, Centro de Química Estrutural, IST, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - Luísa Barreira
- Department of Chemistry and Pharmacy, F.C.T., University of Algarve, 8005-039, Faro, Portugal.,Center of Marine Sciences, CCMar, University of Algarve, 8005-039, Faro, Portugal
| | - José António Paixão
- CFisUC, Department of Physics, University of Coimbra, 3004-516, Coimbra, Portugal
| | - Rui Fausto
- CQC, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
| | - Maria Lurdes S Cristiano
- Department of Chemistry and Pharmacy, F.C.T., University of Algarve, 8005-039, Faro, Portugal.,Center of Marine Sciences, CCMar, University of Algarve, 8005-039, Faro, Portugal
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46
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Redondo P, Rayón VM, Barrientos C, Largo A. Structural Trends in Monoboronyl Compounds: Analysis of the Interaction of Second-Row Elements with BO. J Phys Chem A 2018; 122:398-409. [PMID: 29227645 DOI: 10.1021/acs.jpca.7b10482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A theoretical study of the monoboronyl compounds of second-row elements, [XBO] (X = Na, Si, P, S, Cl), has been carried out. It is observed that the preference for the XBO arrangement is higher when moving to the right of the period. In the case of sodium monoboronyl three minima were characterized, all lying rather close in energy: linear NaBO, linear NaOB, and an L-shaped structure. Linear NaBO and the L-shaped structure are nearly isoenergetic, whereas linear NaOB is located 2.11 kcal/mol above linear NaBO. The barrier for the conversion of the L-shaped structure into linear NaBO is about 5.1 kcal/mol, suggesting that both species could be potential targets for experimental detection. For silicon monoboronyl, two minima, linear SiBO and linear SiOB, are found, the latter lying about 13 kcal/mol above SiBO. The barrier for the isomerization of SiOB into SiBO is estimated to be 11.4 kcal/mol. For phosphorus, sulfur, and chlorine monoboronyls the linear XBO isomer is clearly the most stable one, and the barriers for the conversion into XOB species are relatively high, suggesting that quite likely the linear XBO isomer should be the main experimental target. All studied monoboronyls are relatively stable, with dissociation energies increasing from left to right of the second-row (69.8 kcal/mol for NaBO and 118.98 kcal/mol for ClBO). An analysis of the bonding for second-row monoboronyls has been carried out, emphasizing the different characteristics of the X-B and X-O bonds along the second row.
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Affiliation(s)
- Pilar Redondo
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid Campus Miguel Delibes , Paseo de Belén 7, 47011 Valladolid, Spain
| | - Víctor M Rayón
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid Campus Miguel Delibes , Paseo de Belén 7, 47011 Valladolid, Spain
| | - Carmen Barrientos
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid Campus Miguel Delibes , Paseo de Belén 7, 47011 Valladolid, Spain
| | - Antonio Largo
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid Campus Miguel Delibes , Paseo de Belén 7, 47011 Valladolid, Spain
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47
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Ikeda T, Adachi H, Fueno H, Tanaka K, Haino T. Induced-Dipole-Directed, Cooperative Self-Assembly of a Benzotrithiophene. J Org Chem 2017; 82:10062-10069. [PMID: 28862436 DOI: 10.1021/acs.joc.7b01520] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A benzotrithiophene derivative possessing phenylisoxazoles self-assembled to form stacks. The molecule isodesmically self-assembled in chloroform, whereas it self-assembled in a cooperative fashion in decalin and in methylcyclohexane. Thermodynamic studies based on isodesmic, van der Schoot, and Goldstein-Stryer mathematical models revealed that the self-assembly processes are enthalpically driven and entropically opposed. An enthalpy-entropy compensation plot indicates that the assembly processes in chloroform, decalin, and methylcyclohexane are closely related. The enthalpic gains in less-polar solvents are greater than those in more-polar solvents, resulting in the formation of large assemblies in decalin and in methylcyclohexane. The formation of large assemblies leads to cooperative assemblies. The elongation process is enthalpically more favored than the nucleation process, which drives the cooperativity of the self-assembly. DFT calculations suggested that a hexameric assembly is more stable than tetrameric or dimeric assemblies. Cooperative self-assemblies based on intermolecular interactions other than hydrogen bonding have rarely been reported. It is demonstrated herein that van der Waals interactions, including induced dipole-dipole interactions, can drive the cooperative assembly of planar π-conjugated molecules.
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Affiliation(s)
- Toshiaki Ikeda
- Department of Chemistry, Graduate School of Science, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Hiroaki Adachi
- Department of Chemistry, Graduate School of Science, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Hiroyuki Fueno
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuyoshi Tanaka
- Fukui Institute for Fundamental Chemistry, Kyoto University , 34-4 Nishihiraki-cho, Takano, Sakyo-ku, Kyoto 606-8103, Japan
| | - Takeharu Haino
- Department of Chemistry, Graduate School of Science, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
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48
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Matsuta Y, Sakamaki D, Kurata R, Ito A, Seki S. Modulation of Open-shell Characters of Amine-inserted Diphenoquinones via Structural Modification. Chem Asian J 2017; 12:1889-1894. [PMID: 28560850 DOI: 10.1002/asia.201700652] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 05/24/2017] [Indexed: 11/10/2022]
Abstract
In this study, a series of triphenylamine derivatives with two 2,6-diphenylphenoxy radicals (2 a-d), which could be regarded as amine-inserted diphenoquinones have been synthesized and investigated their structures and electronic properties. The structures of 2 a-d were confirmed by single-crystal X-ray analysis, showing the characteristic bond length alternation patterns for closed-shell quinoids. The solutions of 2 a-d exhibited clear ESR signals even at room temperature, indicating their thermally accessible diradical states. The NMR and ESR measurements showed that the diradical character of 2 a-d were increased in the order of 2 a<2 b<2 c<2 d, well-reproduced by theoretical calculations. The results of this work strongly suggest that the diradical character of this class of compounds could be tuned by changing the substituent on the central nitrogen atom.
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Affiliation(s)
- Yuya Matsuta
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Daisuke Sakamaki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Ryohei Kurata
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Akihiro Ito
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
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49
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Tsipis AC. RETRACTED: DFT challenge of intermetallic interactions: From metallophilicity and metallaromaticity to sextuple bonding. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.08.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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50
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Skripnikov LV. Communication: Theoretical study of HfF+cation to search for the T,P-odd interactions. J Chem Phys 2017; 147:021101. [DOI: 10.1063/1.4993622] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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