1
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Tiddens MR, Kappé BT, Smak TJ, Lutz M, Moret ME. Coordination of a Phosphine-Tethered Aminoborane to Group 10 Metals. Chemistry 2024:e202400666. [PMID: 38577933 DOI: 10.1002/chem.202400666] [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: 02/19/2024] [Revised: 04/04/2024] [Accepted: 04/05/2024] [Indexed: 04/06/2024]
Abstract
While π-complexes of C=C bonds are ubiquitous in organometallic chemistry, analogous complexes of the isoelectronic but strongly polarized B=N double bond of aminoboranes are extremely scarce. To address this gap, a diphosphine-aminoborane ligand (PhDPBAiPr) is introduced and its coordination with group 10 metals is investigated. The B=N bond does not coordinate to the metal in Pt(0) and Pd(II) complexes. In contrast, side-on coordination of the B=N bond is observed in the Ni(0) complex (PhDPBAiPr)Ni(NCPh), and the X-ray crystal structure reveals B-N bond elongation compared to the free ligand. The choice of co-ligand strongly influences the presence or absence of side-on coordination at Ni(0) as evidenced by NMR spectroscopy. While the B=N π-complex is geometrically similar to C=C analogues, a bonding analysis reveals that the interaction of the B=N motif with the electron-rich Ni(0) center is best described as 3c4e hyperbond, in which Ni and N are competing for the empty orbital on B.
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Affiliation(s)
- Martine R Tiddens
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Institute for Sustainable and Circular Chemistry, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Bram T Kappé
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Institute for Sustainable and Circular Chemistry, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Tom J Smak
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Institute for Sustainable and Circular Chemistry, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Martin Lutz
- Structural Biochemistry, Faculty of Science, Utrecht University, Bijvoet Centre for Biomolecular Research, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Marc-Etienne Moret
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Institute for Sustainable and Circular Chemistry, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
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2
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Campbell AD, Ellis K, Gordon LK, Riley JE, Le V, Hollister KK, Ajagbe SO, Gozem S, Hughley RB, Boswell AM, Adjei-Sah O, Baruah PD, Malone R, Whitt LM, Gilliard RJ, Saint-Louis CJ. Solvatochromic and Aggregation-Induced Emission Active Nitrophenyl-Substituted Pyrrolidinone-Fused-1,2-Azaborine with a Pre-Twisted Molecular Geometry. JOURNAL OF MATERIALS CHEMISTRY. C 2023; 11:13740-13751. [PMID: 38855717 PMCID: PMC11160477 DOI: 10.1039/d3tc03278g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Boron-nitrogen-containing heterocycles with extended conjugated π-systems such as polycyclic aromatic 1,2-azaborines, hold the fascination of organic chemists due to their unique optoelectronic properties. However, the majority of polycyclic aromatic 1,2-azaborines aggregate at high concentrations or in the solid-state, resulting in aggregation-caused quenching (ACQ) of emission. This practical limitation poses significant challenges for polycyclic aromatic 1,2-azaborines' use in many applications. Additionally, only a few solvatochromic polycyclic aromatic 1,2-azaborines have been reported and they all display minimal solvatochromism. Therefore, the scope of available polycyclic 1,2-azaborines needs to be expanded to include those displaying fluorescence at high concentration and in the solid-state as well as those that exhibit significant changes in emission intensity in various solvents due to different polarities. To address the ACQ issue, we evaluate the effect of a pre-twisted molecular geometry on the optoelectronic properties of polycyclic aromatic 1,2-azaborines. Specifically, three phenyl-substituted pyrrolidinone-fused 1,2-azaborines (PFAs) with similar structures and functionalized with diverse electronic moieties (-H, -NO2, -CN, referred to as PFA 1, 2, and 3, respectively) were experimentally and computationally studied. Interestingly, PFA 2 displays two distinct emission properties: 1) solvatochromism, in which its emission and quantum yields are tunable with respect to solvent polarity, and 2) fluorescence that can be completely "turned off" and "turned on" via aggregation-induced emission (AIE). This report provides the first example of a polycyclic aromatic 1,2-azaborine that displays both AIE and solvatochromism properties in a single BN-substituted backbone. According to time-dependent density function theory (TD-DFT) calculations, the fluorescence properties of PFA 2 can be explained by the presence of a low-lying n-π* charge transfer state inaccessible to PFA 1 or PFA 3. These findings will help in the design of future polycyclic aromatic 1,2-azaborines that are solvatochromic and AIE-active as well as in understanding how molecular geometry affects these compounds' optoelectronic properties.
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Affiliation(s)
- Albert D Campbell
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, United States
| | - Kaia Ellis
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, United States
| | - Lyric K Gordon
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, United States
| | - Janiyah E Riley
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, United States
| | - VuongVy Le
- Department of Chemistry, University of Virginia, Charlottesville, VA, 22904, United States
| | - Kimberly K Hollister
- Department of Chemistry, University of Virginia, Charlottesville, VA, 22904, United States
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, United States
| | - Stephen O Ajagbe
- Department of Chemistry, Georgia State University, Atlanta, GA, 30302, United States
| | - Samer Gozem
- Department of Chemistry, Georgia State University, Atlanta, GA, 30302, United States
| | - Robert B Hughley
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, United States
| | - Adeline M Boswell
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, United States
| | - Ophelia Adjei-Sah
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, United States
| | - Prioska D Baruah
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, United States
| | - Ra'Nya Malone
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, United States
| | - Logan M Whitt
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama, 35487, United States
| | - Robert J Gilliard
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, United States
| | - Carl Jacky Saint-Louis
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, United States
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3
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Ru C, Wang Y, Chen P, Zhang Y, Wu X, Gong C, Zhao H, Wu J, Pan X. Replacing CC Unit with B←N Unit in Isoelectronic Conjugated Polymers for Enhanced Photocatalytic Hydrogen Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302384. [PMID: 37116108 DOI: 10.1002/smll.202302384] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Indexed: 06/19/2023]
Abstract
Three linear isoelectronic conjugated polymers PCC, PBC, and PBN are synthesized by Suzuki-Miyaura polycondensation for photocatalytic hydrogen (H2 ) production from water. PBN presented an excellent photocatalytic hydrogen evolution rate (HER) of 223.5 µmol h-1 (AQY420 = 23.3%) under visible light irradiation, which is 7 times that of PBC and 31 times that of PCC. The enhanced photocatalytic activity of PBN is due to the improved charge separation and transport of photo-induced electrons/holes originating from the lower exciton binding energy (Eb ), longer fluorescence lifetime, and stronger built-in electric field, caused by the introduction of the polar B←N unit into the polymer backbone. Moreover, the extension of the visible light absorption region and the enhancement of surface catalytic ability further increase the activity of PBN. This work reveals the potential of B←N fused structures as building blocks as well as proposes a rational design strategy for achieving high photocatalytic performance.
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Affiliation(s)
- Chenglong Ru
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yue Wang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Peiyan Chen
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yahui Zhang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Xuan Wu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Chenliang Gong
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Hao Zhao
- School of Physics and Electronic Information, Yantai University, 30 Qingquan Road, Yantai, 264005, China
| | - Jincai Wu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Xiaobo Pan
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
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4
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Shao X, Liu M, Liu J, Wang L. A Resonating B, N Covalent Bond and Coordination Bond in Aromatic Compounds and Conjugated Polymers. Angew Chem Int Ed Engl 2022; 61:e202205893. [DOI: 10.1002/anie.202205893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Indexed: 12/17/2022]
Affiliation(s)
- Xingxin Shao
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
- School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 P. R. China
| | - Mengyu Liu
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
- School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 P. R. China
| | - Jun Liu
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
- School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 P. R. China
| | - Lixiang Wang
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
- School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 P. R. China
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5
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Sun CJ, Cong L, Liu K, Xiao B, Wang N, Yin X, Chen P. Dipole Effect of BN-Doped Tetrathienonaphthalene on Photo-Physical Properties and Lewis Acidity of the D-π-A Derivatives. Inorg Chem 2022; 61:10705-10712. [PMID: 35772025 DOI: 10.1021/acs.inorgchem.2c00854] [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
Dimesitylboryl-acceptor (A) and diarylamine-donor (D) substituents are introduced at α positions of BN-doped tetrathienonaphthalene in the same and opposite directions of the B-N bond, namely, B-BN-N and N-BN-B, in order to demonstrate how the substitution patterns influence the photophysical properties. The photophysical and electrochemical properties of these D-π-A molecules have been investigated in detail, aided by UV-vis absorption and fluorescence spectroscopy as well as cyclic voltammetry. We find that both B-BN-N and N-BN-B show the typical intramolecular charge transfer emission. N-BN-B exhibits strong fluorescence with a narrower band gap and stronger Lewis acidity than that of B-BN-N. DFT calculations help give a reasonable explanation that subtle differences in the electronic structure of the host skeleton could also influence the substituents and feed back this effect to the entire molecule.
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Affiliation(s)
- Chao-Jing Sun
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China.,College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China
| | - Li Cong
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Kanglei Liu
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Beibei Xiao
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Nan Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Xiaodong Yin
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Pangkuan Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
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6
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Shao X, Liu M, Liu J, Wang L. Resonating B, N Covalent Bond and Coordination Bond in Aromatic Compounds and Conjugated Polymers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xingxin Shao
- Changchun Institute of Applied Chemistry Chinese Academy of Sciences: Chang Chun Institute of Applied Chemistry Chinese Academy of Sciences State Key Laboratory of Polymer Physics and Chemistry CHINA
| | - Mengyu Liu
- Changchun Institute of Applied Chemistry Chinese Academy of Sciences: Chang Chun Institute of Applied Chemistry Chinese Academy of Sciences State Key Laboratory of Polymer Physics and Chemistry CHINA
| | - Jun Liu
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences State Key Labortory of Polymer Physics and Chemistry 5625 Renmin Street 130022 Changchun CHINA
| | - Lixiang Wang
- Changchun Institute of Applied Chemistry Chinese Academy of Sciences: Chang Chun Institute of Applied Chemistry Chinese Academy of Sciences State Key Laboratory of Polymer Physics and Chemistry CHINA
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7
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Mondal D, Sardar G, Kabra D, Balakrishna MS. 2,2'-Bipyridine derived doubly B ← N fused bisphosphine-chalcogenides, [C 5H 3N(BF 2){NCH 2P(E)Ph 2}] 2 (E = O, S, Se): tuning of structural features and photophysical studies. Dalton Trans 2022; 51:6884-6898. [PMID: 35441638 DOI: 10.1039/d2dt00287f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2,2'-Bipyridine based bisphosphine [C5H3N{N(H)CH2PPh2}]2 (1) and its bischalcogenide derivatives [C5H3N{N(H)CH2P(E)Ph2}]2 (2, E = O; 3, E = S; 4, E = Se) were synthesized, and further reacted with BF3·Et2O/Et3N to form doubly B ← N fused compounds [C5H3N(BF2){NCH2P(E)Ph2}]2 (5, E = O; 6, E = S; 7, E = Se) in excellent yields. The influence of the PE bonds on the electronic properties of the doubly B ← N fused systems and their structural features were investigated in detail, supported by extensive experimental and computational studies. Compound 6 exhibited a very high quantum yield of ϕ = 0.56 in CH2Cl2, whereas compound 7 showed a least quantum yield of ϕ = 0.003 in acetonitrile. Density functional theory (DFT) calculations demonstrated that the LUMO/HOMO of compounds 5-7 mostly delocalized over the entire π-conjugated frameworks. The involvement of PE bonds in the HOMO energy level of these compounds follows the order: PO < PS < PSe. Time-correlated single photon counting (TCSPC) experiments of compounds 5-7 revealed the singlet lifetime of 4.26 ns for 6, followed by 4.03 ns for 5 and a lowest value of 2.18 ns (τ1) and 0.47 ns (τ2) with a double decay profile for 7. Our findings provide important strategies for the design of highly effective B ← N bridged compounds and tuning their photophysical properties by oxidizing phosphorus with different chalcogens. Compounds 5 and 6 have been employed as green emitters (λem = 515 nm) in fluorescent organic light-emitting diodes (OLEDs). For compound 5, doped into the poly(9-vinylcarbazole) (PVK) matrix with 5 wt% doping concentration, nearly 90 Cd m-2 luminance with 0.022% external quantum efficiency (EQE) was achieved. The best performance was observed for compound 6 doped into PVK by 1 wt% having a maximum luminance of 350 Cd m-2 and a similar EQE value.
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Affiliation(s)
- Dipanjan Mondal
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Gopa Sardar
- Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Dinesh Kabra
- Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Maravanji S Balakrishna
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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8
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Kano N, O'Brien NJ, Aoki K, Matsuda Y, Morofuji T. Synthesis and structure of a phosphinoboronic ester in a fused bicyclic framework. Dalton Trans 2021; 50:16003-16012. [PMID: 34734937 DOI: 10.1039/d1dt02646a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first phosphinoboronic ester bearing a fused bicyclic framework was synthesised by either deprotonation and hydride abstraction or Rh-catalysed dehydrogenation of a hydrophosphineboronic ester. The phosphinoboronic ester reacted as a Lewis acid with KF/18-crown-6, pyridine and DMAP to give the corresponding adducts. Furthermore, its crystal structure shows a remarkably short P-B bond in comparison with other P-B bonded derivatives in spite of the trigonal pyramidal geometry of the phosphorus. Consistent with the phosphorus pyramidality, the π-type donor-acceptor interaction of the P-B bond is small as revealed by the DFT calculations. The P-B bond shared within the fused six-membered rings has to shorten because of the geometrical requirement and high s-character of the boron.
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Affiliation(s)
- Naokazu Kano
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro 1-5-1, Toshima-ku, Tokyo, 171-8588, Japan.
| | - Nathan J O'Brien
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kosuke Aoki
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro 1-5-1, Toshima-ku, Tokyo, 171-8588, Japan.
| | - Yui Matsuda
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro 1-5-1, Toshima-ku, Tokyo, 171-8588, Japan.
| | - Tatsuya Morofuji
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro 1-5-1, Toshima-ku, Tokyo, 171-8588, Japan.
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9
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Sun CJ, Meng G, Li Y, Wang N, Chen P, Wang S, Yin X. Millisecond Time-scale Photoluminescence of B-N-doped Tetrathienonaphthalene with Borane/Amine Substituents. Inorg Chem 2021; 60:1099-1106. [PMID: 33369385 DOI: 10.1021/acs.inorgchem.0c03196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BN-doped polycyclic aromatic hydrocarbons (PAHs) have attracted numerous attentions because of their fascinating optical and electronic properties. In this work, a series of electron-donor (amine)- and -acceptor (borane)-functionalized BN-doped polycyclic aromatic hydrocarbons were prepared to study the substituents' effect on the photophysical properties. As a result, the compound with both donor and acceptor, BN, exhibits both local emission (LE) and charge-transfer emission (CT) in polar solvents. Especially, the CT emission with a longer wavelength revealed a lifetime as long as millisecond time scale at room temperature, indicating typical phosphorescence characteristics. Low-temperature photoluminescent (PL) spectroscopy and a theoretical study were conducted to help to interpret this phenomenon, and it turned out to be the lowering of the S1 energy level of BN which makes the intersystem crossing favorable. Furthermore, fluoride anion titration experiments exhibit the application potential of the dual-emission phenomenon of BN for ratiometric sensory materials.
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Affiliation(s)
- Chao-Jing Sun
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China.,College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China
| | - Guoyun Meng
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Ya Li
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Nan Wang
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Pangkuan Chen
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Suning Wang
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China.,Department of Chemistry, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Xiaodong Yin
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
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10
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Pecorari D, Mazzanti A, Gianvittorio S, Foschi S, Stagni S, Fiorini V, Mancinelli M. Highly twisted carbazole-borane derivatives: B–N stereodynamic analysis and consequences on their emission properties. Org Chem Front 2021. [DOI: 10.1039/d1qo00715g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The manuscript describes the stereodynamic features of amino bis-mesityl-boranes bearing carbazole and benzocarbazole as donor heterocycles, and how they influence the photophysical properties.
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Affiliation(s)
- Daniel Pecorari
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- I-40136 Bologna
- Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- I-40136 Bologna
- Italy
| | - Stefano Gianvittorio
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- I-40136 Bologna
- Italy
| | - Simone Foschi
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- I-40136 Bologna
- Italy
| | - Stefano Stagni
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- I-40136 Bologna
- Italy
| | - Valentina Fiorini
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- I-40136 Bologna
- Italy
| | - Michele Mancinelli
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- I-40136 Bologna
- Italy
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11
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Confer MP, Outlaw DA, Dixon DA. Potential main group amine borane-based chemical hydrogen storage molecular systems. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.112953] [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]
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12
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Baranac-Stojanović M. Triplet-State Structures, Energies, and Antiaromaticity of BN Analogues of Benzene and Their Benzo-Fused Derivatives. J Org Chem 2019; 84:13582-13594. [PMID: 31538474 DOI: 10.1021/acs.joc.9b01858] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
It is well known that benzene is aromatic in the ground state (the Hückel's rule) and antiaromatic in the first triplet (T1) excited state (the Baird's rule). Whereas its BN analogues, the three isomeric dihydro-azaborines, have been shown to have various degrees of aromaticity in their ground state, almost no data are available for their T1 states. Thus, the purpose of this work is to theoretically [B3LYP/6-311+G(d,p)] predict structures, energies, and antiaromaticity of T1 dihydro-azaborines and some benzo-fused derivatives. Conclusions are based on spin density analysis, isogyric and hydrogenation reactions, HOMA, NICS, and ACID calculations. The results suggest that singlet-triplet energy gaps, antiaromaticity, and related excited-state properties of benzene, naphthalene, and anthracene could be tuned and controlled by the BN substitution pattern. While all studied compounds remain (nearly) planar upon excitation, the spin density distribution in T1 1,4-dihydro-azaborine induces a conformational change by which the two co-planar C-H bonds in the ground state become perpendicular to each other in the excited state. This predicted change in geometry could be of interest for the design of new photomechanical materials. Excitation of B-CN/N-NH2 1,4-azaborine would have a few effects: intramolecular charge transfer, aromaticity reversal, rotation, and stereoelectronic Umpolung of the amino group.
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Affiliation(s)
- Marija Baranac-Stojanović
- Faculty of Chemistry , University of Belgrade , Studentski trg 12-16 , P.O.Box 158, 11000 Belgrade , Serbia
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13
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Baranac-Stojanović M. A DFT Study of the Modulation of the Antiaromatic and Open-Shell Character of Dibenzo[a,f]pentalene by Employing Three Strategies: Additional Benzoannulation, BN/CC Isosterism, and Substitution. Chemistry 2019; 25:9747-9757. [PMID: 31107568 DOI: 10.1002/chem.201901845] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/17/2019] [Indexed: 11/07/2022]
Abstract
Dibenzo[a,f]pentalene ([a,f]DBP) is a highly antiaromatic molecule having appreciable open-shell singlet character in its ground state. In this work, DFT calculations at the B3LYP/6-311+G(d,p) level of theory were performed to explore the efficiency of three strategies, that is, BN/CC isosterism, substitution, and (di)benzoannulation of [a,f]DBP, in controlling its electronic state and (anti)aromaticity. To evaluate the type and extent of the latter, the harmonic oscillator model of aromaticity (HOMA) and aromatic fluctuation (FLU) indices were used, along with the nucleus-independent chemical shift NICS-XY-scan procedure. The results suggest that all three strategies could be employed to produce either the closed-shell system or open-shell species, which may be in the singlet or triplet ground state. Triplet states have been characterized as aromatic, which is in accordance with Baird's rule. All the singlet states were found to have weaker global paratropicity than [a,f]DBP. Additional (di)benzo fusion adds local aromatic subunit(s) and mainly retains the topology of the paratropic ring currents of the basic molecule. The substitution of two carbon atoms by the isoelectronic BN pair, or the introduction of substituents, results either in the same type and very similar topology of ring currents as in the parent compound, or leads to (anti)aromatic and nonaromatic subunits. The triplet states of all the examined compounds are also discussed.
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14
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Abstract
The possibility of multiple bond formation between Periodic Table Group 13 – 15 elements is considered. The ways of triple bond formation between these elements are discussed; particular attention is paid to the B≡B triple bonds. New non-linear compounds with triple bonds and their molecular structures are considered. The causes are given for the formation of compounds with unusually short distances between chemically non-bonded atoms. The grounds of the theory of two-centre three-electron bonds are presented and conditions of existence of isolated square planar carbon clusters are analyzed.
The bibliography includes 181 references.
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15
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Pang S, Más‐Montoya M, Xiao M, Duan C, Wang Z, Liu X, Janssen RAJ, Yu G, Huang F, Cao Y. Adjusting Aggregation Modes and Photophysical and Photovoltaic Properties of Diketopyrrolopyrrole-Based Small Molecules by Introducing B←N Bonds. Chemistry 2019; 25:564-572. [PMID: 30285301 PMCID: PMC6391975 DOI: 10.1002/chem.201804020] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/01/2018] [Indexed: 11/17/2022]
Abstract
The packing mode of small-molecular semiconductors in thin films is an important factor that controls the performance of their optoelectronic devices. Designing and changing the packing mode by molecular engineering is challenging. Three structurally related diketopyrrolopyrrole (DPP)-based compounds were synthesized to study the effect of replacing C-C bonds by isoelectronic dipolar B←N bonds. By replacing one of the bridging C-C bonds on the peripheral fluorene units of the DPP molecules by a coordinative B←N bond and changing the B←N bond orientation, the optical absorption, fluorescence, and excited-state lifetime of the compounds can be tuned. The substitution alters the preferential aggregation of the molecules in the solid state from H-type (for C-C) to J-type (for B←N). Introducing B←N bonds thus provides a subtle way of controlling the packing mode. The photovoltaic properties of the compounds were evaluated in bulk heterojunctions with a fullerene acceptor and showed moderate performance as a consequence of suboptimal morphologies, bimolecular recombination, and triplet-state formation.
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Affiliation(s)
- Shuting Pang
- State Key Laboratory of Luminescent Materials and DevicesInstitute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640P. R. China
| | - Miriam Más‐Montoya
- Molecular Materials and NanosystemsInstitute for, Complex Molecular SystemsEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
- Present address: Department of Organic ChemistryUniversity of Murcia30100MurciaSpain
| | - Manjun Xiao
- State Key Laboratory of Luminescent Materials and DevicesInstitute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640P. R. China
| | - Chunhui Duan
- State Key Laboratory of Luminescent Materials and DevicesInstitute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640P. R. China
| | - Zhenfeng Wang
- State Key Laboratory of Luminescent Materials and DevicesInstitute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640P. R. China
| | - Xi Liu
- State Key Laboratory of Luminescent Materials and DevicesInstitute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640P. R. China
| | - René A. J. Janssen
- Molecular Materials and NanosystemsInstitute for, Complex Molecular SystemsEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| | - Gang Yu
- State Key Laboratory of Luminescent Materials and DevicesInstitute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640P. R. China
| | - Fei Huang
- State Key Laboratory of Luminescent Materials and DevicesInstitute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640P. R. China
| | - Yong Cao
- State Key Laboratory of Luminescent Materials and DevicesInstitute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640P. R. China
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16
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Baranac-Stojanović M, Stojanović M. Does aromaticity account for an enhanced thermodynamic stability? The case of monosubstituted azaborines and the stereoelectronic chameleonism of the NH 2 group. Phys Chem Chem Phys 2019; 21:9465-9476. [PMID: 31016295 DOI: 10.1039/c9cp01011d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work was initiated by the increasing interest in BN/CC isosterism and by the long-lasting interest in the concepts of aromaticity and substituent effects. We have theoretically examined the aromaticity and stability of monosubstituted BN isosters of benzene, the three isomeric azaborines. The results provide insight into the effect of substitution on two basic molecular properties, which are influenced, here, by the substituent effects and by the B/N relationship in the ring. The results, along with other examples in the literature, also warn chemists that the general belief that aromaticity accounts for enhanced thermodynamic stability is not always true. The stability of cyclic, conjugated compounds depends on several effects, and only one of them is aromaticity. In addition, our calculations predict a switching of electronic properties of the NH2 group from the usual p-electron donor to a π-electron acceptor when it is moved from the B/C atoms to the nitrogen atom in all isomers, or C6 in 1,3-azaborine. This is the result of the conformational change that places the NLP in the plane of the ring and the NH bonds in a favourable spatial position to act as acceptors of π-electron density.
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Affiliation(s)
- Marija Baranac-Stojanović
- University of Belgrade - Faculty of Chemistry, Studentski trg 12-16, P.O. Box 158, 11000 Belgrade, Serbia.
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17
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Stojanović M, Baranac-Stojanović M. Analysis of Stability and (Anti)aromaticity of BN-Dibenzo[ a
, e
]pentalenes. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Milovan Stojanović
- Institute of Chemistry, Technology and Metallurgy, Center for Chemistry; University of Belgrade; Njegoševa 12 11000 Belgrade Serbia
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18
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Lu JS, Yang MC, Su MD. Triple-Bonded Boron≡Phosphorus Molecule: Is That Possible? ACS OMEGA 2018; 3:76-85. [PMID: 31457879 PMCID: PMC6641486 DOI: 10.1021/acsomega.7b01480] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 12/18/2017] [Indexed: 05/27/2023]
Abstract
The effect of substitution on the potential energy surfaces of RB≡PR (R = H, F, OH, SiH3, and CH3) is studied using density functional theories (M06-2X/Def2-TZVP, B3PW91/Def2-TZVP, and B3LYP/LANL2DZ+dp). There is significant theoretical evidence that RB≡PR compounds with smaller substituents are fleeting intermediates, so they would be difficult to be detected experimentally. These theoretical studies using the M06-2X/Def2-TZVP method demonstrate that only the triply bonded R'B≡PR' molecules bearing sterically bulky groups (R' = Tbt (=C6H2-2,4,6-{CH(SiMe3)2}3), SiMe(SitBu3)2, Ar* (=C6H3-2,6-(C6H2-2,4,6-i-Pr3)2), and SiiPrDis2) are significantly stabilized and can be isolated experimentally. Using the simple valence-electron bonding model and some sophisticated theories, the bonding character of R'B≡PR' should be viewed as R'BI PR'. The present theoretical observations indicate that both the electronic and the steric effect of bulkier substituent ligands play a key role in making triply bonded R'B≡PR' species synthetically accessible and isolable in a stable form.
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Affiliation(s)
- Jia-Syun Lu
- Department
of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
| | - Ming-Chung Yang
- Department
of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
| | - Ming-Der Su
- Department
of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 80708, Taiwan
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19
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Pai SJ, Han SS. S E2 reaction in noncarbon system: Metal-halide catalysis for dehydrogenation of ammonia borane. Proc Natl Acad Sci U S A 2017; 114:13625-13630. [PMID: 29229814 PMCID: PMC5748185 DOI: 10.1073/pnas.1712137115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
An electrophilic substitution (SE) reaction of BN isosteres has been investigated for the dehydrogenation of ammonia borane (AB) by metal chlorides (MCl2) using various ab initio calculations. In contrast to the typical SE reaction occurring at the carbon atom, the nitrogen atom in AB serves as the reaction center for the SE reaction with the boron moiety as the leaving group when the MCl2 approaches the AB. The SE2 backside reaction is favored as a trigger step for the dehydrogenation of AB by the MCl2 The SE2 reaction is found for 3d-transition-metal chlorides (e.g., FeCl2, CoCl2, NiCl2, CuCl2, and ZnCl2), while PdCl2 leads to the dehydrogenation of AB by a direct B-H σ-bond activation, similar to most organometallic catalysts. Interestingly, the polymerization of AB promoted by MCl2 can be explained with the similar SE2 mechanism, and the dehydrogenation of the BN derivative 3-methyl-1,2-BN-cyclopentane (CBN) bearing a carbon backbone ring also follows the SE2 reaction. In particular, the experimental observation that the use of metal-chloride catalysis decreases the by-products obtained during the hydrogenation of AB can be explained by our mechanism involving the SE2 reaction. This work is helpful for the development of novel metal-halide catalysts for practical hydrogen storage materials, including the BN moiety.
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Affiliation(s)
- Sung Jin Pai
- Computational Science Research Center, Korea Institute of Science and Technology, Seongbuk-gu, Seoul 136-791, Republic of Korea
| | - Sang Soo Han
- Computational Science Research Center, Korea Institute of Science and Technology, Seongbuk-gu, Seoul 136-791, Republic of Korea
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20
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Baranac-Stojanović M. 4π-Electron B-N Monocycles: Stability and (Anti)aromaticity. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700959] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marija Baranac-Stojanović
- Faculty of Chemistry; University of Belgrade; Studentski trg 12-16, P. O. Box 158 11000 Belgrade Serbia
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21
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Turner JR, Resendiz-Lara DA, Jurca T, Schäfer A, Vance JR, Beckett L, Whittell GR, Musgrave RA, Sparkes HA, Manners I. Synthesis, Characterization, and Properties of Poly(aryl)phosphinoboranes Formed via Iron-Catalyzed Dehydropolymerization. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700120] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Joshua R. Turner
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | | | - Titel Jurca
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - André Schäfer
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - James R. Vance
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Laura Beckett
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - George R. Whittell
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Rebecca A. Musgrave
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Hazel A. Sparkes
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Ian Manners
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
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22
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Saint-Louis CJ, Magill LL, Wilson JA, Schroeder AR, Harrell SE, Jackson NS, Trindell JA, Kim S, Fisch AR, Munro L, Catalano VJ, Webster CE, Vaughan PP, Molek KS, Schrock AK, Huggins MT. The Synthesis and Characterization of Highly Fluorescent Polycyclic Azaborine Chromophores. J Org Chem 2016; 81:10955-10963. [PMID: 27704820 DOI: 10.1021/acs.joc.6b01998] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Carl Jacky Saint-Louis
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
| | - Lacey L. Magill
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
| | - Julie A. Wilson
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
| | - Andrew R. Schroeder
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
- School
of Medicine, University of Alabama, 1825 University Boulevard, Birmingham, Alabama 35294, United States
| | - Sarah E. Harrell
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
| | - Nicolle S. Jackson
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
| | - Jamie A. Trindell
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
- Department
of Chemistry, University of Texas-Austin, 120 Inner Campus Dr., Austin, Texas 78712, United States
| | - Saraphina Kim
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
| | - Alexander R. Fisch
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
- Department
of Chemistry, University of Tennessee, 1420 Circle Dr., Knoxville, Tennessee 37996, United States
| | - Lyndsay Munro
- Department
of Chemistry, University of Nevada, Reno, Reno, Nevada 89557, United States
| | - Vincent J. Catalano
- Department
of Chemistry, University of Nevada, Reno, Reno, Nevada 89557, United States
| | - Charles Edwin Webster
- Department
of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Pamela P. Vaughan
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
| | - Karen S. Molek
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
| | - Alan K. Schrock
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
| | - Michael T. Huggins
- Department
of Chemistry, University of West Florida, Pensacola, Florida 32514, United States
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23
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Helten H. B=N Units as Part of Extended π-Conjugated Oligomers and Polymers. Chemistry 2016; 22:12972-82. [DOI: 10.1002/chem.201602665] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Holger Helten
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52056 Aachen Germany
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24
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Pal A, Vanka K. Small Molecule Activation by Constrained Phosphorus Compounds: Insights from Theory. Inorg Chem 2015; 55:558-65. [PMID: 26700074 DOI: 10.1021/acs.inorgchem.5b01074] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amrita Pal
- Physical Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India
| | - Kumar Vanka
- Physical Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India
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25
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Hooper TN, Weller AS, Beattie NA, Macgregor SA. Dehydrocoupling of phosphine-boranes using the [RhCp*Me(PMe 3)(CH 2Cl 2)][BAr F4] precatalyst: stoichiometric and catalytic studies. Chem Sci 2015; 7:2414-2426. [PMID: 29997783 PMCID: PMC6003611 DOI: 10.1039/c5sc04150c] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 12/19/2015] [Indexed: 01/08/2023] Open
Abstract
Detailed experimental and computational studies are reported on the fundamental B–H and P–H bond activation steps involved in the dehydrocoupling/dehydropolymerization of primary and secondary phosphine–boranes, H3B·PPhR′H (R = Ph, H), using the [RhCp*(PMe3)Me(ClCH2Cl)][BArF4] catalyst.
We report a detailed, combined experimental and computational study on the fundamental B–H and P–H bond activation steps involved in the dehydrocoupling/dehydropolymerization of primary and secondary phosphine–boranes, H3B·PPhR′H (R = Ph, H), using [RhCp*(PMe3)Me(ClCH2Cl)][BArF4], to either form polyphosphino-boranes [H2B·PPhH]n (Mn ∼ 15 000 g mol–1, PDI = 2.2) or the linear diboraphosphine H3B·PPh2BH2·PPh2H. A likely polymer-growth pathway of reversible chain transfer step-growth is suggested for H3B·PPhH2. Using secondary phosphine–boranes as model substrates a combined synthesis, structural (X-ray crystallography), labelling and computational approach reveals: initial bond activation pathways (B–H activation precedes P–H activation); key intermediates (phosphido-boranes, α-B-agostic base-stabilized boryls); and a catalytic route to the primary diboraphosphine (H3B·PPhHBH2·PPhH2). It is also shown that by changing the substituent at phosphorus (Ph or Cy versustBu) different final products result (phosphido-borane or base stabilized phosphino-borane respectively). These studies provide detailed insight into the pathways that are operating during dehydropolymerization.
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Affiliation(s)
- Thomas N Hooper
- Department of Chemistry , Chemistry Research Laboratories , University of Oxford , Mansfield Road , Oxford , OX1 3TA , UK .
| | - Andrew S Weller
- Department of Chemistry , Chemistry Research Laboratories , University of Oxford , Mansfield Road , Oxford , OX1 3TA , UK .
| | - Nicholas A Beattie
- Institute of Chemical Sciences , Heriot Watt University , Edinburgh , EH14 4AS , UK .
| | - Stuart A Macgregor
- Institute of Chemical Sciences , Heriot Watt University , Edinburgh , EH14 4AS , UK .
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26
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Altman AB, Pemmaraju CD, Camp C, Arnold J, Minasian SG, Prendergast D, Shuh DK, Tyliszczak T. Theory and X-ray Absorption Spectroscopy for Aluminum Coordination Complexes – Al K-Edge Studies of Charge and Bonding in (BDI)Al, (BDI)AlR2, and (BDI)AlX2 Complexes. J Am Chem Soc 2015; 137:10304-16. [PMID: 26258886 DOI: 10.1021/jacs.5b05854] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alison B. Altman
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | | | - Clément Camp
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - John Arnold
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
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27
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28
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A Highly Effective Ruthenium System for the Catalyzed Dehydrogenative Cyclization of Amine-Boranes to Cyclic Boranes under Mild Conditions. Chemistry 2015. [DOI: 10.1002/chem.201501569] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Dou C, Ding Z, Zhang Z, Xie Z, Liu J, Wang L. Developing Conjugated Polymers with High Electron Affinity by Replacing a CC Unit with a B←N Unit. Angew Chem Int Ed Engl 2015; 54:3648-52. [DOI: 10.1002/anie.201411973] [Citation(s) in RCA: 189] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 01/09/2015] [Indexed: 11/10/2022]
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30
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Dou C, Ding Z, Zhang Z, Xie Z, Liu J, Wang L. Developing Conjugated Polymers with High Electron Affinity by Replacing a CC Unit with a B←N Unit. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411973] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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31
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Zhang Z, Ding Z, Dou C, Liu J, Wang L. Development of a donor polymer using a B ← N unit for suitable LUMO/HOMO energy levels and improved photovoltaic performance. Polym Chem 2015. [DOI: 10.1039/c5py01389e] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a novel approach to tune the LUMO/HOMO energy levels of polymer donors by replacing a C–C unit with a B ← N unit. The polymer containing a B ← N unit exhibits lower LUMO/HOMO levels and a narrower bandgap, leading to an improved photovoltaic performance.
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Affiliation(s)
- Zijian Zhang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Zicheng Ding
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Chuandong Dou
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Jun Liu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Lixiang Wang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
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32
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Bhattacharya B, Singh NB, Mondal R, Sarkar U. Electronic and optical properties of pristine and boron–nitrogen doped graphyne nanotubes. Phys Chem Chem Phys 2015; 17:19325-41. [DOI: 10.1039/c5cp02938d] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The band gaps and optical responses of graphyne nanotubes can be engineered through the selection of the BN doping site and the chirality.
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Affiliation(s)
| | - N. B. Singh
- Department of Physics
- Assam University
- Silchar-788011
- India
| | - R. Mondal
- Department of Physics
- Assam University
- Silchar-788011
- India
| | - U. Sarkar
- Department of Physics
- Assam University
- Silchar-788011
- India
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33
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Baranac-Stojanović M. Aromaticity and Stability of Azaborines. Chemistry 2014; 20:16558-65. [DOI: 10.1002/chem.201402851] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 08/30/2014] [Indexed: 11/06/2022]
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34
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Légaré MA, Bélanger-Chabot G, De Robillard G, Languérand A, Maron L, Fontaine FG. Insights into the Formation of Borabenzene Adducts via Ligand Exchange Reactions and TMSCl Elimination from Boracyclohexadiene Precursors. Organometallics 2014. [DOI: 10.1021/om500524j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Marc-André Légaré
- Département
de Chimie, Centre de Catalyse et de Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada G1V 0A6
| | - Guillaume Bélanger-Chabot
- Département
de Chimie, Centre de Catalyse et de Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada G1V 0A6
| | - Guillaume De Robillard
- Département
de Chimie, Centre de Catalyse et de Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada G1V 0A6
| | - André Languérand
- Département
de Chimie, Centre de Catalyse et de Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada G1V 0A6
| | - Laurent Maron
- Université de Toulouse, INSA, UPS, LCPNO, CNRS, UMR 5215 CNRS-UPS-INSA, 135 avenue de Rangueil, Toulouse, France
| | - Frédéric-Georges Fontaine
- Département
de Chimie, Centre de Catalyse et de Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada G1V 0A6
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35
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Xu S, Mikulas TC, Zakharov LN, Dixon DA, Liu SY. Boron-substituted 1,3-dihydro-1,3-azaborines: synthesis, structure, and evaluation of aromaticity. Angew Chem Int Ed Engl 2013; 52:7527-31. [PMID: 23749749 DOI: 10.1002/anie.201302660] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Indexed: 11/07/2022]
Abstract
Getting the family together: A general synthetic strategy based on nucleophilic substitution provided B-substituted 1,3-dihydro-1,3-azaborines (see scheme), BN isosteres of arenes with potential for application in biomedicine and materials science. Experimental structural analysis and calculations suggest that the aromaticity of the 1,3-dihydro-1,3-azaborine heterocycle is intermediate between that of benzene and that of 1,2-dihydro-1,2-azaborine.
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Affiliation(s)
- Senmiao Xu
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403-1253, USA
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36
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Xu S, Mikulas TC, Zakharov LN, Dixon DA, Liu SY. Boron-Substituted 1,3-Dihydro-1,3-azaborines: Synthesis, Structure, and Evaluation of Aromaticity. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302660] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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37
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Burford RJ, Geier MJ, Vogels CM, Decken A, Westcott SA. Addition of boranes to iminophosphines: Synthesis and reactivity of a new bulky hydroboration reagent. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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38
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Wang L, Zhang T, He H, Zhang J. Mechanism for H2 release from potential hydrogen storage materials of phosphine alane and phosphine borane in the presence or absence of alane or borane: a theoretical study. RSC Adv 2013. [DOI: 10.1039/c3ra43859g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Campbell PG, Marwitz AJV, Liu SY. Recent advances in azaborine chemistry. Angew Chem Int Ed Engl 2012; 51:6074-92. [PMID: 22644658 DOI: 10.1002/anie.201200063] [Citation(s) in RCA: 563] [Impact Index Per Article: 46.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Indexed: 01/07/2023]
Abstract
The chemistry of organoboron compounds has been primarily dominated by their use as powerful reagents in synthetic organic chemistry. Recently, the incorporation of boron as part of a functional target structure has emerged as a useful way to generate diversity in organic compounds. A commonly applied strategy is the replacement of a CC unit with its isoelectronic BN unit. In particular, the BN/CC isosterism of the ubiquitous arene motif has undergone a renaissance in the past decade. The parent molecule of the 1,2-dihydro-1,2-azaborine family has now been isolated. New mono- and polycyclic B,N heterocycles have been synthesized for potential use in biomedical and materials science applications. This review is a tribute to Dewar's first synthesis of a monocyclic 1,2-dihydro-1,2-azaborine 50 years ago and discusses recent advances in the synthesis and characterization of heterocycles that contain carbon, boron, and nitrogen.
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Affiliation(s)
- Patrick G Campbell
- Department of Chemistry, University of Oregon, Eugene, OR 97403-1253, USA
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40
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41
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Kubo K, Kawanaka T, Tomioka M, Mizuta T. Synthesis and Crystal Structures of P-Iron-Substituted Phosphinoborane Monomers. Organometallics 2012. [DOI: 10.1021/om201287s] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuyuki Kubo
- Department of Chemistry, Graduate
School of Science, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima,
Hiroshima 739-8526, Japan
| | - Tomohiro Kawanaka
- Department of Chemistry, Graduate
School of Science, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima,
Hiroshima 739-8526, Japan
| | - Masao Tomioka
- Department of Chemistry, Graduate
School of Science, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima,
Hiroshima 739-8526, Japan
| | - Tsutomu Mizuta
- Department of Chemistry, Graduate
School of Science, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima,
Hiroshima 739-8526, Japan
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42
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Jackson VE, Dixon DA, Christe KO. Thermochemical Properties of Selenium Fluorides, Oxides, and Oxofluorides. Inorg Chem 2012; 51:2472-85. [DOI: 10.1021/ic202417n] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Virgil E. Jackson
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, United States
| | - David A. Dixon
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, United States
| | - Karl O. Christe
- Loker Research
Institute and Department of Chemistry, University of Southern California, Los Angeles, California
90089-1661, United States
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Tsurusaki A, Sasamori T, Wakamiya A, Yamaguchi S, Nagura K, Irle S, Tokitoh N. Synthesis of 1-Phospha-2-boraacenaphthenes: Reductive 1,2-Aryl Migration of 1-Diarylboryl-8-dichlorophosphinonaphthalenes. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201104971] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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Tsurusaki A, Sasamori T, Wakamiya A, Yamaguchi S, Nagura K, Irle S, Tokitoh N. Synthesis of 1-phospha-2-boraacenaphthenes: reductive 1,2-aryl migration of 1-diarylboryl-8-dichlorophosphinonaphthalenes. Angew Chem Int Ed Engl 2011; 50:10940-3. [PMID: 21948740 DOI: 10.1002/anie.201104971] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Indexed: 11/11/2022]
Affiliation(s)
- Akihiro Tsurusaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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45
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Wong BM, Lacina D, Nielsen IMB, Graetz J, Allendorf MD. Thermochemistry of Alane Complexes for Hydrogen Storage: A Theoretical and Experimental Investigation. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2011; 115:7778-7786. [PMID: 22962624 PMCID: PMC3433776 DOI: 10.1021/jp112258s] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Revised: 03/04/2011] [Indexed: 05/20/2023]
Abstract
Knowledge of the relative stabilities of alane (AlH(3)) complexes with electron donors is essential for identifying hydrogen storage materials for vehicular applications that can be regenerated by off-board methods; however, almost no thermodynamic data are available to make this assessment. To fill this gap, we employed the G4(MP2) method to determine heats of formation, entropies, and Gibbs free energies of formation for 38 alane complexes with NH(3-n)R(n) (R = Me, Et; n = 0-3), pyridine, pyrazine, triethylenediamine (TEDA), quinuclidine, OH(2-n)R(n) (R = Me, Et; n = 0-2), dioxane, and tetrahydrofuran (THF). Monomer, bis, and selected dimer complex geometries were considered. Using these data, we computed the thermodynamics of the key formation and dehydrogenation reactions that would occur during hydrogen delivery and alane regeneration, from which trends in complex stability were identified. These predictions were tested by synthesizing six amine-alane complexes involving trimethylamine, triethylamine, dimethylethylamine, TEDA, quinuclidine, and hexamine and obtaining upper limits of ΔG° for their formation from metallic aluminum. Combining these computational and experimental results, we establish a criterion for complex stability relevant to hydrogen storage that can be used to assess potential ligands prior to attempting synthesis of the alane complex. On the basis of this, we conclude that only a subset of the tertiary amine complexes considered and none of the ether complexes can be successfully formed by direct reaction with aluminum and regenerated in an alane-based hydrogen storage system.
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Affiliation(s)
- Bryan M. Wong
- Sandia National Laboratories, Livermore, California 94551-0969, United States
| | - David Lacina
- Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Ida M. B. Nielsen
- Sandia National Laboratories, Livermore, California 94551-0969, United States
| | - Jason Graetz
- Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Mark D. Allendorf
- Sandia National Laboratories, Livermore, California 94551-0969, United States
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46
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Wang X, Cho HG, Andrews L, Chen M, Dixon DA, Hu HS, Li J. Matrix Infrared Spectroscopic and Computational Investigations of the Lanthanide−Methylene Complexes CH2LnF2 with Single Ln−C Bonds. J Phys Chem A 2011; 115:1913-21. [DOI: 10.1021/jp111592e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xuefeng Wang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
- Department of Chemistry, Tongji University, Shanghai, 200092 China
| | - Han-Gook Cho
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
- Department of Chemistry, University of Incheon, 177 Dohwa-dong, Nam-ku, Incheon, 402-749, South Korea
| | - Lester Andrews
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Mingyang Chen
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, United States
| | - David A. Dixon
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, United States
| | - Han-Shi Hu
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
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47
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Stevens CJ, Dallanegra R, Chaplin AB, Weller AS, Macgregor SA, Ward B, McKay D, Alcaraz G, Sabo-Etienne S. [Ir(PCy3)2(H)2(H2BNMe2)]+ as a Latent Source of Aminoborane: Probing the Role of Metal in the Dehydrocoupling of H3B⋅NMe2H and Retrodimerisation of [H2BNMe2]2. Chemistry 2011; 17:3011-20. [DOI: 10.1002/chem.201002517] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Revised: 11/05/2010] [Indexed: 11/06/2022]
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48
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Nguyen VS, Swinnen S, Leszczynski J, Nguyen MT. Formation and hydrogen release of hydrazine bisborane: transfer vs. attachment of a borane. Phys Chem Chem Phys 2011; 13:6649-56. [DOI: 10.1039/c0cp02484h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Chen JX, Kim CK, Lee HW, Xue Y, Kim CK. Reexamination of the π-bond strengths within H2C=XHn systems: a theoretical study. J Comput Chem 2010; 32:1361-7. [PMID: 21425291 DOI: 10.1002/jcc.21718] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Revised: 10/01/2010] [Accepted: 10/20/2010] [Indexed: 11/06/2022]
Abstract
The accurate determination of π-bond energies, D(π), in doubly-bonded species has been an important issue in theoretical chemistry. The procedure using the divalent state stabilization energy defined by Walsh has been suggested, and the procedure seems to be conceptually reasonable and applicable to all kinds of doubly-bonded species. Therefore, the aim of this study was to examine whether the procedure could be a reliable methodology for estimating the D(π) values for a variety of H(2)C=XH(n) species. To achieve a higher accuracy, the D(π) values were estimated at QCISD(T)/6-311++G(3df,2p) level of theory combined with isogyric correction. The D(π) values estimated in this work were in excellent agreement with the extant literature values. On the other hand, in determining accurate D(π) values for doubly bonded species, especially in species with lone-pair electrons such as H(2)C=O, it has been found that consideration of highly sophisticated electron correlation effects could be important. However, sufficiently accurate D(π) values have been obtainable at QCISD(T) or CCSD(T) levels with a 6-311++G(3df,2p) basis set on geometries at relatively inferior correlated levels such as MP2 and B3LYP levels with a 6-31+G(d) basis set.
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Affiliation(s)
- Jun-Xian Chen
- Department of Chemistry, Inha University, Incheon, Korea
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50
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Li J, Kathmann SM, Hu HS, Schenter GK, Autrey T, Gutowski M. Theoretical Investigations on the Formation and Dehydrogenation Reaction Pathways of H(NH2BH2)nH (n = 1−4) Oligomers: Importance of Dihydrogen Interactions. Inorg Chem 2010; 49:7710-20. [DOI: 10.1021/ic100418a] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Jun Li
- Department of Chemistry, Tsinghua University, Beijing 100084, China
- W. R. Wiley Environmental Molecular Sciences Laboratory and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - Shawn M. Kathmann
- W. R. Wiley Environmental Molecular Sciences Laboratory and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - Han-Shi Hu
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Gregory K. Schenter
- W. R. Wiley Environmental Molecular Sciences Laboratory and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - Tom Autrey
- W. R. Wiley Environmental Molecular Sciences Laboratory and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - Maciej Gutowski
- W. R. Wiley Environmental Molecular Sciences Laboratory and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352
- Chemistry-School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
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