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Kohn EM, Konovalov K, Gomez CA, Hoover GN, Yik AKH, Huang X, Martell JD. Terminal Alkyne-Modified DNA Aptamers with Enhanced Protein Binding Affinities. ACS Chem Biol 2023; 18:1976-1984. [PMID: 37531184 DOI: 10.1021/acschembio.3c00183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Nucleic acid-based receptors, known as aptamers, are relatively fast to discover and manufacture but lack the diverse functional groups of protein receptors (e.g., antibodies). The binding properties of DNA aptamers can be enhanced by attaching abiotic functional groups; for example, aromatic groups such as naphthalene slow dissociation from proteins. Although the terminal alkyne is a π-electron-rich functional group that has been used in small molecule drugs to enhance binding to proteins through noncovalent interactions, it remains unexplored for enhancing DNA aptamer binding affinity. Here, we demonstrate the utility of the terminal alkyne for improving the binding of DNA to proteins. We prepared a library of 256 terminal-alkyne-bearing variants of HD22, a DNA aptamer that binds the protein thrombin with nanomolar affinity. After a one-step thrombin-binding selection, a high-affinity aptamer containing two alkynes was discovered, exhibiting 3.2-fold tighter thrombin binding than the corresponding unmodified sequence. The tighter binding was attributable to a slower rate of dissociation from thrombin (5.2-fold slower than HD22). Molecular dynamics simulations with enhanced sampling by Replica Exchange with Solute Tempering (REST2) suggest that the π-electron-rich alkyne interacts with an asparagine side chain N-H group on thrombin, forming a noncovalent interaction that stabilizes the aptamer-protein interface. Overall, this work represents the first case of terminal alkynes enhancing the binding properties of an aptamer and underscores the utility of the terminal alkyne as an atom economical π-electron-rich functional group to enhance binding affinity with minimal steric perturbation.
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Affiliation(s)
- Eric M Kohn
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Kirill Konovalov
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Theoretical Chemistry Institute, Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Christian A Gomez
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Gillian N Hoover
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Andrew Kai-Hei Yik
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Theoretical Chemistry Institute, Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Xuhui Huang
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Theoretical Chemistry Institute, Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Jeffrey D Martell
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53705, United States
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2
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Chloropentaphenyldisiloxane—Model Study on Intermolecular Interactions in the Crystal Structure of a Monofunctionalized Disiloxane. CHEMISTRY 2021. [DOI: 10.3390/chemistry3020033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Small functional siloxane units have gained great interest as molecular model systems for mimicking more complex silicate structures both in nature and in materials chemistry. The crystal structure of chloropentaphenyldisiloxane, which was synthesized for the first time, was elucidated by single-crystal X-ray diffraction analysis. The molecular crystal packing was studied in detail using state-of-the-art Hirshfeld surface analysis together with a two-dimensional fingerprint mapping of the intermolecular interactions. It was found that the phenyl C–H bonds act as donors for both weak C–H···π and C–H···Cl hydrogen bond interactions. The influence of intramolecular Si–O–Si bond parameters on the acceptor capability of functional groups in intermolecular hydrogen bond interactions is discussed.
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3
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Raynor S, Song HH. A Cyclic Periodic Wave Function Approach for the Study of Infinitely Periodic Solid-State Systems. I. Application to the C-H···π(C≡C) Hydrogen Bonding Systems. ACS OMEGA 2020; 5:27546-27555. [PMID: 33134718 PMCID: PMC7594129 DOI: 10.1021/acsomega.0c04095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 09/22/2020] [Indexed: 06/11/2023]
Abstract
The cyclic periodic wave function (CPWF) approach is applied at the AM1 and PM3 semiempirical levels of approximation to infinitely periodic solid-state systems stabilized by weak CH-pi (C-H···π) interactions between repeat units. The reliability of the AM1 and PM3 methods for modeling C-H···π bonding is first demonstrated using two representative dimer systems: the T-shaped ethyne dimer and the T-shaped propyne dimer. The CPWF method is then applied to two different crystal systems that are stabilized by C-H···π interactions: (1) pent-4-ynoic acid solid and (2) a series of three infinite crystal systems-tetrakis(4-ethynylphenyl)methane solid, tetraethynylmethane solid, and tetrabutadiynylmethane solid. A comparison of our results with available data demonstrates that the use of the CPWF approach at the AM1 and PM3 levels of approximation provides a convenient and reliable method for the study of infinitely periodic systems containing very weak C-H···π bonding.
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Affiliation(s)
- Susanne Raynor
- Department of Chemistry, Rutgers
University—Newark, The State University
of New Jersey, 73 Warren
Street, Newark, New Jersey 07102, United States
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4
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Tsyrenova BD, Tarasevich BN, Khrustalev VN, Gloriozov IP, Nenajdenko VG. Hydrogen bonding in acetylene containing dichlorodiazaalkadienes. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.09.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Liu Z, Yuan M, Zhang X, Liang Q, Yang M, Mou H, Zhu C. A thermostable glucose oxidase from Aspergillus heteromophus CBS 117.55 with broad pH stability and digestive enzyme resistance. Protein Expr Purif 2020; 176:105717. [PMID: 32745582 DOI: 10.1016/j.pep.2020.105717] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/01/2020] [Accepted: 07/23/2020] [Indexed: 10/23/2022]
Abstract
In this study, the heterologous expression of an engineered thermostablle glucose oxidase from Aspergillus heteromophus CBS 117.55 was achieved in P. pastoris. This recombinant GoxAh was thermostable, with an optimal temperature range 25 °C-65 °C, and it was capable of retaining greater than 90% of its initial activity following a 10-min incubation at 75 °C. This enzyme had an optimum pH of 6.0, and it could retain above 80% of its initial activity following a 2-h incubation at a broad pH range (2.0-8.0). Moreover, GoxAh displayed excellent pepsin and trypsin resistance, and highly resistant to a range of tested metal ions and chemical reagents. These good properties make GoxAh a promising candidate for feed additive. The Km and kcat/Km values of GoxAh were 187 mM and 1.09/mM/s, which limited its widespread application to some degree. However, due to its excellent characteristics, GoxAh is still of potential economic value for high value-added areas, as well as a good initial enzyme for developing applicable feed enzyme by protein engineering.
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Affiliation(s)
- Zhemin Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China
| | - Mingxue Yuan
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China
| | - Xiaoyue Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China
| | - Qingping Liang
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China
| | - Min Yang
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China.
| | - Changliang Zhu
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, China.
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6
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Tavassoli M, Montazerozohori M, Naghiha R, Sadeghi H, Masoudiasl A, Joohari S, Lopez EV, Mahmoudi G. Some new nanostructure zinc complex: Synthesis, spectral analyses, crystal structure, Hirshfeld surface analyses, antimicrobial/anticancer, thermal behavior and usage as precursor for ZnO nanostructure. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110642. [PMID: 32204075 DOI: 10.1016/j.msec.2020.110642] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 10/04/2019] [Accepted: 01/03/2020] [Indexed: 01/04/2023]
Abstract
In this work, a new tridentate ligand, its some novel zinc halide/pseudohalide complexes and their antimicrobial and cytotoxic effects of them are described. Characterization data of these compounds have been achieved via several physical and micro analytical techniques. As typical one, X-ray crystal structure analysis of zinc azide complex was run showing zinc center is penta-coordinated by three nitrogen atoms from Schiff base ligand and two terminal azide nitrogen atoms as a distorted square pyramidal geometry. Hirshfeld surfaces analysis clears the important role of interactions related to azide groups (NH⋯N and CH⋯N hydrogen bonds) in the stabilization of its supramolecular structure. According to data obtained from thermal analysis (TG/DTG/DTA), all complexes are decomposed at four or more thermal stages below 1000 °C. Moreover antimicrobial activities of the compounds were screened against some gram positive and gram negative bacteria. Furthermore anticancer activities of the complexes were studied against MDA-MB468 and k562 as two cancer cell lines. In final, three zinc complexes were also synthesized in nano scale by sonochemical method and one of them was utilized as the precursor for preparation of nanostructure ZnO confirmed by XRD pattern and SEM image.
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Affiliation(s)
| | | | - Reza Naghiha
- Department of Animal Sciences, Faculty of Agriculture, Yasouj University, Yasouj, Iran
| | - Hossein Sadeghi
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Ardavan Masoudiasl
- Department of Chemistry, Faculty of Science, University of Maragheh, P.O. Box 55181-83111, Maragheh, Iran
| | - Shiva Joohari
- Department of Basic Sciences, Yasooj Branch, Islamic Azad University, Yasooj, Iran
| | | | - Ghodrat Mahmoudi
- Department of Chemistry, Faculty of Science, University of Maragheh, P.O. Box 55181-83111, Maragheh, Iran
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7
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Abstract
Structurally divergent molecules containing bulky substituents tend to produce porous materials via frustrated packing. Two rigid tetrahedral cores, tetraphenylmethane and 1,3,5,7-tetraphenyladamantane, grafted peripherally with four (trimethylsilyl)ethynyl moieties, were found to have only isolated voids in their crystal structures. Hence, they were modified into tecton-like entities, tetrakis(4-(iodoethynyl)phenyl)methane [I4TEPM] and 1,3,5,7-tetrakis(4-(iodoethynyl)phenyl)adamantane [I4TEPA], in order to deliberately use the motif-forming characteristics of iodoethynyl units to enhance crystal porosity. I4TEPM not only holds increased free volume compared to its precursor, but also forms one-dimensional channels. Furthermore, it readily co-crystallizes with Lewis basic solvents to afford two-component porous crystals.
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8
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Abstract
The reactions of [W(CBr)(CO)2(Tp*)] with a range of terminal alkynes (RCCH), mediated by [Pd(PPh3)4] and CuI, afford new propargylidynes [W(C–CCR)(CO)2(Tp*)] [R = tBu, C6H4X (X = H, NH2, NO2), APh3 (A = C, Si, Ge), B(O2CCH2)2NMe].
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Affiliation(s)
- Anthony F. Hill
- Research School of Chemistry
- The Australian National University
- Canberra
- Australia
| | - Richard A. Manzano
- Research School of Chemistry
- The Australian National University
- Canberra
- Australia
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9
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Hellwig R, Uphoff M, Paintner T, Björk J, Ruben M, Klappenberger F, Barth JV. Ho-Mediated Alkyne Reactions at Low Temperatures on Ag(111). Chemistry 2018; 24:16126-16135. [PMID: 30039631 DOI: 10.1002/chem.201803102] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Indexed: 11/05/2022]
Abstract
Low-temperature approaches to catalytic conversions promise efficiency, selectivity, and sustainable processes. Control over certain coupling reactions can be obtained via the pre-positioning of reactive moieties by self-assembly. However, in the striving field of on-surface synthesis atomistic precision and control remains largely elusive, because the employed coupling reactions proceed at temperatures beyond the thermal stability of the supramolecular templates. Here, utilizing scanning tunneling microscopy, we demonstrate terminal alkyne on-surface reactions mediated by Ho atoms at a weakly reactive Ag(111) substrate at low-temperatures. Density functional theory calculations confirm the catalytic activity of the involved adatoms. Pre-deposited Ho induces alkyne dehydrogenation starting at substrate temperatures as low as 100 K. Ho arriving at molecularly pre-covered surfaces held at 130 and 200 K produces covalent enyne-linked dimers and initiates cyclotrimerization, respectively. Statistical product analysis indicates a two-step pathway for the latter, whereby the enyne intermediates influence the distribution of the products. High chemoselectivity results from the absence of cyclotetramerization and diyne-forming homocoupling. Our analysis indicates that mainly the arriving Ho adatoms enable the coupling. These findings support the concept of dynamic heterogeneity by single-atom catalysts and pave the way for alternative means to control on-surface reactions.
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Affiliation(s)
- Raphael Hellwig
- Physics Department E20, Technical University of Munich, 85748, Garching, Germany
| | - Martin Uphoff
- Physics Department E20, Technical University of Munich, 85748, Garching, Germany
| | - Tobias Paintner
- Physics Department E20, Technical University of Munich, 85748, Garching, Germany
| | - Jonas Björk
- Department of Physics, Chemistry and Biology (IFM), Linköping University, 58183, Linköping, Sweden
| | - Mario Ruben
- Institute für Nanotechnologie, Karlsruher Institut für Technologie (KIT), 76344, Eggenstein-Leopoldshafen, Germany.,Institut de Physique et Chimie de Matériaux de Strasbourg (IPCMS), CNRS-Université de Strasbourg, 67034, Strasbourg, France
| | | | - Johannes V Barth
- Physics Department E20, Technical University of Munich, 85748, Garching, Germany
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10
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Mousavi SA, Montazerozohori M, Masoudiasl A, Mahmoudi G, White JM. Sonication-assisted synthesis of a new cationic zinc nitrate complex with a tetradentate Schiff base ligand: Crystal structure, Hirshfeld surface analysis and investigation of different parameters influence on morphological properties. ULTRASONICS SONOCHEMISTRY 2018; 46:26-35. [PMID: 29739510 DOI: 10.1016/j.ultsonch.2018.02.050] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 02/27/2018] [Accepted: 02/28/2018] [Indexed: 06/08/2023]
Abstract
A nanostructured cationic zinc nitrate complex with a formula of [ZnLNO3]NO3 (where L = (N2E,N2'E)-N1,N1'-(ethane-1,2-diyl)bis(N2-((E)-3-phenylallylidene)ethane-1,2-diamine)) was prepared by sonochemical process and characterized by single crystal X-ray crystallography, scanning electron microscopy (SEM), FT-IR and NMR spectroscopy and X-ray powder diffraction (XRPD). The X-ray analysis demonstrates the formation of a cationic complex that metal center is five-coordinated by four nitrogen atom from Schiff base ligand and one oxygen atom from nitrate group. The crystal packing analysis demonstrates the essential role of the nitrate groups in the organization of supramolecular structure. The morphology and size of ultrasound-assisted synthesized zinc nitrate complex have been investigated using scanning electron microscopy (SEM) by changing parameters such as the concentration of initial reactants, the sonication power and reaction temperature. In addition the calcination of zinc nitrate complex in air atmosphere led to production of zinc oxide nanoparticles.
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Affiliation(s)
- S A Mousavi
- Department of Chemistry, Yasouj University, Yasouj 75918-74831, Iran
| | - M Montazerozohori
- Department of Chemistry, Yasouj University, Yasouj 75918-74831, Iran.
| | - A Masoudiasl
- Department of Chemistry, Payame Noor University, Tehran, Iran
| | - G Mahmoudi
- Department of Chemistry, Faculty of Science, University of Maragheh, P.O. Box 55181-83111, Maragheh, Iran
| | - J M White
- School of Chemistry and BIO-21 Institute, University of Melbourne, 30 Flemington Road, Parkville, Australia
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12
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Sun Y, Hu Z, Zhao D, Zeng K. Mechanical Properties of Microcrystalline Metal-Organic Frameworks (MOFs) Measured by Bimodal Amplitude Modulated-Frequency Modulated Atomic Force Microscopy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:32202-32210. [PMID: 28849914 DOI: 10.1021/acsami.7b06809] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Direct measurement of the mechanical properties of microcrystalline metal-organic framework (MOF) nanoparticles is challenging and rarely explored. In this work, we apply an effective method to realize elastic modulus mapping of a series of isostructural single MOF nanoparticles (100-500 nm) via bimodal amplitude modulated-frequency modulated atomic force microscopy. By probing five types of zirconium (Zr) and hafnium (Hf) isostructural UiO-66-type MOFs, we experimentally found that UiO-66(Hf)-type MOFs possess the higher elastic modulus (46-104 GPa) than that of UiO-66(Zr)-type MOFs (34-100 GPa), both of which are higher than that of reported zinc/copper based MOFs (3-10 GPa). We also experimentally demonstrate that the mechanical properties of MOFs can be tuned by adjusting the chemical functionalities of the ligands or using different metal nodes. In detail, the sterically bulky functional groups increase the mechanical properties of the resultant UiO-66-type MOFs, possibly due to the increased atomic density. These results pave a way to the direct measurement of mechanical properties of MOFs crystalline particles and provide an incisive perspective to the design of MOFs with high mechanical properties.
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Affiliation(s)
- Yao Sun
- Department of Mechanical Engineering, National University of Singapore , 9 Engineering Drive 1, 117576 Singapore
| | - Zhigang Hu
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, 117585 Singapore
| | - Dan Zhao
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, 117585 Singapore
| | - Kaiyang Zeng
- Department of Mechanical Engineering, National University of Singapore , 9 Engineering Drive 1, 117576 Singapore
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13
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Liu J, Chen QW, Wu K. On-surface construction of low-dimensional nanostructures with terminal alkynes: Linking strategies and controlling methodologies. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.04.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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14
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Pitts CR, Siegler MA, Lectka T. Intermolecular Aliphatic C–F···H–C Interaction in the Presence of “Stronger” Hydrogen Bond Acceptors: Crystallographic, Computational, and IR Studies. J Org Chem 2017; 82:3996-4000. [DOI: 10.1021/acs.joc.7b00268] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cody Ross Pitts
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Maxime A. Siegler
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Thomas Lectka
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
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15
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Shishkina SV, Konovalova IS, Shishkin OV, Boyko AN. Acceptor properties of amino groups in aminobenzene crystals: study from the energetic viewpoint. CrystEngComm 2017. [DOI: 10.1039/c7ce01382e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of the N–H⋯N hydrogen bonds in the organization of the crystals of the aniline and diaminobenzenes has been studied.
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Affiliation(s)
- Svitlana V. Shishkina
- SSI “Institute for Single Crystals”
- National Academy of Science of Ukraine
- Kharkiv
- Ukraine
- Department of Inorganic Chemistry
| | - Irina S. Konovalova
- SSI “Institute for Single Crystals”
- National Academy of Science of Ukraine
- Kharkiv
- Ukraine
| | - Oleg V. Shishkin
- SSI “Institute for Single Crystals”
- National Academy of Science of Ukraine
- Kharkiv
- Ukraine
- Department of Inorganic Chemistry
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16
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Mastrorilli P, Gallo V, Todisco S, Latronico M, Saielli G. Uncovering Intramolecular π-Type Hydrogen Bonds in Solution by NMR Spectroscopy and DFT Calculations. Chemistry 2016; 22:7964-9. [PMID: 27097847 DOI: 10.1002/chem.201600078] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Indexed: 11/06/2022]
Abstract
Reaction between the phosphinito bridged diplatinum species [(PHCy2 )Pt(μ-PCy2 ){κ(2) P,O-μ-P(O)Cy2 }Pt(PHCy2 )](Pt-Pt) (1), and (trimethylsilyl)acetylene at 273 K affords the σ-acetylide complex [(PHCy2 )(η(1) -Me3 SiC≡C)Pt(μ-PCy2 )Pt(PHCy2 ){κP-P(OH)Cy2 }](Pt-Pt) (2) featuring an intramolecular π-type hydrogen bond. Scalar and dipolar couplings involving the POH proton were detected by 2D NMR experiments. Relativistic DFT calculations of the geometry, relative energy, and NMR properties of model systems of 2 confirmed the structural assignment and allowed the energy of the π-type hydrogen bond to be estimated (ca. 22 kJ mol(-1) ).
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Affiliation(s)
- Piero Mastrorilli
- Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, via Orabona 4, 70125, Bari, Italy.
| | - Vito Gallo
- Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, via Orabona 4, 70125, Bari, Italy
| | - Stefano Todisco
- Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, via Orabona 4, 70125, Bari, Italy
| | - Mario Latronico
- Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, via Orabona 4, 70125, Bari, Italy
| | - Giacomo Saielli
- CNR, Istituto per la Tecnologia delle Membrane, Unità di Padova, via Marzolo, 1-35131, Padova, Italy
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17
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Montazerozohori M, Farokhiyani S, Masoudiasl A, White JM. Crystal structures, Hirshfeld surface analyses and thermal behavior of two new rare tetrahedral terminal zinc(ii) azide and thiocyanate Schiff base complexes. RSC Adv 2016. [DOI: 10.1039/c5ra26864h] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Crystal structures, Hirshfeld surface and thermal analyses of two new rare tetrahedral terminal zinc(ii) thiocyanate and azide Schiff base complexes of [ZnL(NCS)2] and [ZnL(N3)2] are presented.
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Affiliation(s)
| | - S. Farokhiyani
- Department of Chemistry
- Yasouj University
- Yasouj 7591874831
- Iran
| | - A. Masoudiasl
- Department of Chemistry
- Yasouj University
- Yasouj 7591874831
- Iran
| | - J. M. White
- School of Chemistry and BIO-21 Institute
- University of Melbourne
- Parkville
- Australia
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18
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Xiang F, Lu Y, Li C, Song X, Liu X, Wang Z, Liu J, Dong M, Wang L. Cyclotrimerization-Induced Chiral Supramolecular Structures of 4-Ethynyltriphenylamine on Au(111) Surface. Chemistry 2015. [DOI: 10.1002/chem.201501434] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Steed KM, Steed JW. Packing problems: high Z' crystal structures and their relationship to cocrystals, inclusion compounds, and polymorphism. Chem Rev 2015; 115:2895-933. [PMID: 25675105 DOI: 10.1021/cr500564z] [Citation(s) in RCA: 247] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Kirsty M Steed
- †SAgE Faculty, Newcastle University, Devonshire Building, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Jonathan W Steed
- ‡Department of Chemistry, Durham University, South Road, Durham DH1 3LE, United Kingdom
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An Alkyne-Appended, Click-Ready PtIIComplex with an Unusual Arrangement in the Solid State. Angew Chem Int Ed Engl 2014; 54:1032-5. [DOI: 10.1002/anie.201409853] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Indexed: 01/02/2023]
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21
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White JD, Guzman LE, Zakharov LN, Haley MM, DeRose VJ. An Alkyne-Appended, Click-Ready PtIIComplex with an Unusual Arrangement in the Solid State. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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22
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Eto M, Yamaguchi K, Watanabe A, Harano K. Isolable atropisomers of 2-aryl indoline derivatives: determination of rotational barrier by density functional theory approach. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.01.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Eichhorn J, Heckl WM, Lackinger M. On-surface polymerization of 1,4-diethynylbenzene on Cu(111). Chem Commun (Camb) 2013; 49:2900-2. [PMID: 23459835 DOI: 10.1039/c3cc40444g] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The polymerization of 1,4-diethynylbenzene was studied on a Cu(111) surface using scanning tunneling microscopy (STM) under ultra-high vacuum conditions. Thermal activation yielded disordered covalent networks, where distinct basic structural motifs indicate different coupling reactions.
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Affiliation(s)
- Johanna Eichhorn
- Department of Physics & TUM School of Education, Tech. Univ. Munich, Schellingstrasse 33, 80799 Munich, Germany
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24
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On the Relevance of Considering the Intermolecular Interactions on the Prediction of the Vibrational Spectra of Isopropylamine. J CHEM-NY 2013. [DOI: 10.1155/2013/682514] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The effects of implicitly considering the effects of hydrogen bonding on the molecular properties, such as vibrational frequencies, were inferred on the basis of DFT calculations. Several clusters of isopropylamine were assembled and theoretically characterized. The results showed that maximum H-bond cooperativity is achieved when the amine group acts simultaneously as donor and acceptor. The effect of H-bond cooperativity manifests itself in the relative cluster stability and on the structural and vibrational frequency predictions. Referring to the vibrational frequencies it was found that theNH2stretching and torsion vibrational modes are the most affected by the amine involvement in hydrogen bonding. Both stretching modes were found to be significantly redshifted relative to the monomer. TheNH2torsional mode, on the other hand, was found to be blueshifted up to 350 cm-1. Finally, the comparative study between the theory levels performed allows to conclude that the small 6-31G* basis set is able to stabilize weakC–H⋯Ninteractions as long as the new dispersion corrected DFT methods are considered. The impairments observed with conventional DFT methods for describing weak interactions may be overcome with the improvement of basis set, but the associated increase of computational costs may turn the calculations unfeasible.
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Sureshan KM, Gonnade RG. Weak becomes strong: remarkable strength of C–H⋯π hydrogen bond in the presence of O–H⋯O hydrogen bonds in the crystal stabilization. CrystEngComm 2013. [DOI: 10.1039/c3ce26894b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Raissi H, Yoosefian M, Mollania F, Farzad F, Nowroozi AR, loghmaninejad D. Ab initio and DFT computational studies on molecular conformations and strength of the intramolecular hydrogen bond in different conformers of 3-amino-2-iminomethyl acryl aldehyde. COMPUT THEOR CHEM 2011. [DOI: 10.1016/j.comptc.2011.03.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Zhao D, Tan S, Yuan D, Lu W, Rezenom YH, Jiang H, Wang LQ, Zhou HC. Surface functionalization of porous coordination nanocages via click chemistry and their application in drug delivery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:90-93. [PMID: 20972982 DOI: 10.1002/adma.201003012] [Citation(s) in RCA: 267] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Affiliation(s)
- Dan Zhao
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, USA
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Bouchmella K, Dutremez S, Guérin C, Longato JC, Dahan F. Guanidinium Alkynesulfonates with Single-Layer Stacking Motif: Interlayer Hydrogen Bonding Between Sulfonate Anions Changes the Orientation of the Organosulfonate R Group from “Alternate Side” to “Same Side”. Chemistry 2010; 16:2528-36. [DOI: 10.1002/chem.200901717] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Goswami S, Hazra A, Jana S, Fun HK. Recognition study of substituted benzoic acids by 7-substituted pterin receptors in solution and solid phases. CrystEngComm 2010. [DOI: 10.1039/b917092h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Moral M, Ruiz A, Moreno A, Díaz-Ortiz A, López-Solera I, de la Hoz A, Sánchez-Migallón A. Microwave-assisted synthesis of pyrazolyl bistriazines. Tetrahedron 2010. [DOI: 10.1016/j.tet.2009.11.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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Han Z, Chai T, Wang Y, Gao Y, Hu C. Molecular assemblies based on the template-directing effect of anionic polyoxometalate clusters and organic cationic flexibility. Polyhedron 2010. [DOI: 10.1016/j.poly.2009.06.078] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Nishio M, Umezawa Y, Honda K, Tsuboyama S, Suezawa H. CH/π hydrogen bonds in organic and organometallic chemistry. CrystEngComm 2009. [DOI: 10.1039/b902318f] [Citation(s) in RCA: 481] [Impact Index Per Article: 32.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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34
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Sureshan KM, Uchimaru T, Yao Y, Watanabe Y. Strength from weakness: CH⋯π stabilized conformational tuning of benzyl ethers and a consequent co-operative edge-to-face CH⋯π network. CrystEngComm 2008. [DOI: 10.1039/b718099c] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Stoyanov ES, Stoyanova IV, Reed CA. The basicity of unsaturated hydrocarbons as probed by hydrogen-bond-acceptor ability: bifurcated N-H+ ...pi hydrogen bonding. Chemistry 2008; 14:7880-91. [PMID: 18637650 PMCID: PMC2730148 DOI: 10.1002/chem.200800337] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The competitive substitution of the anion (A(-)) in contact ion pairs of the type [Oct3NH+]B(C6F5)4 (-) by unsaturated hydrocarbons (L) in accordance with the equilibrium Oct3NH+...A(-) + nL right arrow over left arrow [Oct3NH+...Ln]A(-) has been studied in CCl4. On the basis of equilibrium constants, K, and shifts of nuNH to low frequency, it has been established that complexed Oct3NH...+Ln cations with n=1 and 2 are formed and have unidentate and bifurcated N--H+...pi hydrogen bonds, respectively. Bifurcated hydrogen bonds to unsaturated hydrocarbons have not been observed previously. The unsaturated hydrocarbons studied include benzene and methylbenzenes, fused-ring aromatics, alkenes, conjugated dienes, and alkynes. From the magnitude of the redshifts in the N--H stretching frequencies, Delta nuNH, a new scale for ranking the pi basicity of unsaturated hydrocarbons is proposed: fused-ring aromatics
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Affiliation(s)
- Evgenii S. Stoyanov
- Department of Chemistry University of California, Riverside Riverside, California 92521, USA
| | - Irina V. Stoyanova
- Department of Chemistry University of California, Riverside Riverside, California 92521, USA
| | - Christopher A. Reed
- Department of Chemistry University of California, Riverside Riverside, California 92521, USA
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36
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Sánchez-García E, Mardyukov A, Tekin A, Crespo-Otero R, Montero LA, Sander W, Jansen G. Ab initio and matrix isolation study of the acetylene–furan dimer. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2007.09.053] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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37
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Hosseinzadeh R, Seichter W, Sanaeishoar T, Weber E. Synthesis and Supramolecular Behaviour of 2,7-Dibromo-9-alkynylfluorenols. Supramol Chem 2007. [DOI: 10.1080/10610270600955157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Wilhelm Seichter
- b Institut für Organische Chemie, Technische Universität Bergakademie Freiberg , Leipziger Strasse 29, D-09596, Freiberg, Germany
| | | | - Edwin Weber
- b Institut für Organische Chemie, Technische Universität Bergakademie Freiberg , Leipziger Strasse 29, D-09596, Freiberg, Germany
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38
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Kumar DK, Das A, Dastidar P. Metalloporphyrin-Based Inclusion Materials: Exploiting Ligating Topologies and Hydrogen-Bonding Backbones in Generating New Supramolecular Architectures. Inorg Chem 2007; 46:7351-61. [PMID: 17683138 DOI: 10.1021/ic0702163] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
By coordination of the metal center of tetraphenylmetalloporphyrins (TPMP) [metal center=Zn(II) or Mn(II)] with pyridyl-based bidentate ligands, namely, N,N'-bis(4-pyridyl)urea (4BPU), N,N'-bis(3-pyridyl)urea (3BPU), and N-(4-pyridyl)isonicotinamide (4PIN), various axially modified tetraarylmetalloporphyrins (AMTAMPs) have been crystallographically characterized in their corresponding lattice inclusion complexes. Nine such inclusion crystals are prepared by crystallizing TPMP and the corresponding bidentate ligands in 1:2 molar ratio from suitable solvent systems. While the metal center Zn(II) of TPMP leads to the formation of both dimeric and monomeric AMTAMPs due to its preference for pentacoordinated geometry, the Mn(II) metal center of TPMP forms both polymeric and discrete hexacoordinated AMTAMPs due to its preference for hexacoordinated geometry. However, there seem to be no control on the formation of a particular AMTAMP. Structural analyses suggest that most of the AMTAMPs display new types of packing in the corresponding inclusion crystals.
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Affiliation(s)
- D Krishna Kumar
- Department of Organic Chemistrty, Indian Association for the Cultivation of Science, 2A&2B Raja S. C. Mullick Road, Jadavpur, Kolkata-700032, West Bengal, India
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Saigo K, Kobayashi Y. The role of CH/pi interaction in the stabilization of less-soluble diastereomeric salt crystals. CHEM REC 2007; 7:47-56. [PMID: 17304592 DOI: 10.1002/tcr.20100] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Enantiopure 2-naphthylglycolic acid (NGA) and cis-1-aminobenz[f]indan-2-ol (ABI) were rationally designed as new resolving agents on the model of mandelic acid (MA) and cis-1-aminoindan-2-ol (AI), respectively. As expected, NGA and ABI showed superior chiral recognition ability to racemates, compared with MA and AI. In order to clarify any factors governing the chiral recognition abilities of NGA and ABI, the crystal structures of their less- and more-soluble diastereomeric salts were determined by X-ray crystallographic analyses and revealed that CH/pi interactions play an intrinsic role in chiral recognitions. A theoretical investigation was also performed with the periodic ab initio method by using the X-ray crystal structures of the less-soluble salt crystals with AI and ABI to find the unique properties of CH/pi interaction in the crystalline state, which largely contributed to the stabilization of the crystals.
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Affiliation(s)
- Kazuhiko Saigo
- Department of Chemistry and Biotechnology Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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40
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Affiliation(s)
- Thomas Steiner
- a Institut für Kristallographie, Freie Universität Berlin , Takustraβe 6, D-14195 , Berlin , Germany
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42
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Wilton-Ely JDET, Wang M, Benoit DM, Tocher DA. Spectroscopic, Structural and Theoretical Investigation of Alkenyl Ruthenium Complexes Supported by Sulfur–Nitrogen Mixed-Donor Ligands. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600241] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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(π)C—H···S, (allyl)C—H···C(π) and π···π intermolecular interactions: synthesis, characterization, and crystal structure of 2,2′-bipyridine bis(diallyldithiocarbamato)zinc(II). Struct Chem 2006. [DOI: 10.1007/s11224-006-9062-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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44
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Hobza P, Zahradník R, Müller-Dethlefs K. The World of Non-Covalent Interactions: 2006. ACTA ACUST UNITED AC 2006. [DOI: 10.1135/cccc20060443] [Citation(s) in RCA: 166] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The review focusses on the fundamental importance of non-covalent interactions in nature by illustrating specific examples from chemistry, physics and the biosciences. Laser spectroscopic methods and both ab initio and molecular modelling procedures used for the study of non-covalent interactions in molecular clusters are briefly outlined. The role of structure and geometry, stabilization energy, potential and free energy surfaces for molecular clusters is extensively discussed in the light of the most advanced ab initio computational results for the CCSD(T) method, extrapolated to the CBS limit. The most important types of non-covalent complexes are classified and several small and medium size non-covalent systems, including H-bonded and improper H-bonded complexes, nucleic acid base pairs, and peptides and proteins are discussed with some detail. Finally, we evaluate the interpretation of experimental results in comparison with state of the art theoretical models: this is illustrated for phenol...Ar, the benzene dimer and nucleic acid base pairs. A review with 270 references.
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45
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He WD, Zhou G, Wong NB, Tian AM, Long XP. Intramolecular H-bonds in LLM-105 and its derivatives: a DFT study. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.theochem.2004.12.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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46
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Yamaguchi K, Nakatomi S, Yoshitake Y, Harano K. A novel clathrate host allowing structural adjustment during the inclusion of 1,2-diaminoethanes. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2004.12.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Han Z, Zhao Y, Peng J, Tian A, Liu Q, Ma J, Wang E, Hu N. Co-existing intermolecular halogen bonding, aryl packing and hydrogen bonding in driving the self-assembly process of Keggin polyoxometalates. CrystEngComm 2005. [DOI: 10.1039/b501922b] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Pérez S, López C, Caubet A, Bosque R, Solans X, Bardía MF, Roig A, Molins E. Novel Five-Membered Pallada- and Platinacycles Containing a [C(sp2, ferrocene), N, S]- Terdentate Ligand. Theoretical Interpretation of Their Electrochemical and Electronic Properties Based on Density Functional Calculations. Organometallics 2003. [DOI: 10.1021/om030520d] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sonia Pérez
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028-Barcelona, Spain, Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028-Barcelona, Spain, and Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain
| | - Concepción López
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028-Barcelona, Spain, Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028-Barcelona, Spain, and Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain
| | - Amparo Caubet
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028-Barcelona, Spain, Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028-Barcelona, Spain, and Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain
| | - Ramon Bosque
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028-Barcelona, Spain, Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028-Barcelona, Spain, and Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain
| | - Xavier Solans
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028-Barcelona, Spain, Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028-Barcelona, Spain, and Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain
| | - Mercè Font Bardía
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028-Barcelona, Spain, Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028-Barcelona, Spain, and Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain
| | - Anna Roig
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028-Barcelona, Spain, Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028-Barcelona, Spain, and Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain
| | - Elies Molins
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028-Barcelona, Spain, Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028-Barcelona, Spain, and Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain
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49
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Zhou G, Zhang JL, Wong NB, Tian A. Theoretical study of the blue-shifting intramolecular hydrogen bonds of nitro derivatives of cubane. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/j.theochem.2003.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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Foreman MRSJ, Hill AF, White AJP, Williams DJ. Hydrotris(methimazolyl)borato Alkylidyne Complexes of Tungsten1. Organometallics 2003. [DOI: 10.1021/om030288b] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mark R. St.-J. Foreman
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K., and Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra ACT, Australia
| | - Anthony F. Hill
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K., and Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra ACT, Australia
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K., and Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra ACT, Australia
| | - David J. Williams
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K., and Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra ACT, Australia
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