LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 13

Search options

  1. Article ; Online: Jahn-Teller Effect in the B12F12 Radical Anion and Energetic Preference of an Octahedral B6(BF2)6 Cluster Structure over an Icosahedral Structure for the Elusive Neutral B12F12.

    Malischewski, Moritz / Bukovsky, Eric V / Strauss, Steven H / Seppelt, Konrad

    Inorganic chemistry

    2015  Volume 54, Issue 23, Page(s) 11563–11566

    Abstract: The B12F12(-) radical anion was generated by oxidation of [CoCp2(+)]2B12F12(2-) with AsF5 in SO2. In the crystal structure of [CoCp2(+)]B12F12(-), the anion displays a lowered symmetry (D2h) instead of an Ih-symmetric dianion as a result of Jahn-Teller ... ...

    Abstract The B12F12(-) radical anion was generated by oxidation of [CoCp2(+)]2B12F12(2-) with AsF5 in SO2. In the crystal structure of [CoCp2(+)]B12F12(-), the anion displays a lowered symmetry (D2h) instead of an Ih-symmetric dianion as a result of Jahn-Teller distortion. Moreover, shortening of the B-F bonds and subtle changes of the B-B bonds are observed. DFT calculations show that, for the unknown neutral B12F12, unprecedented structural isomers [e.g., octahedral B6(BF2)6] are energetically favored instead of an icosahedral structure. The structures and energetics are compared with those of the analogous chlorine compounds.
    Language English
    Publishing date 2015-12-07
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.5b02256
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article ; Online: Structures of M

    Malischewski, Moritz / Peryshkov, Dmitry V / Bukovsky, Eric V / Seppelt, Konrad / Strauss, Steven H

    Inorganic chemistry

    2016  Volume 55, Issue 23, Page(s) 12254–12262

    Abstract: The structures of three solvated monovalent cation salts of the superweak anion ... ...

    Abstract The structures of three solvated monovalent cation salts of the superweak anion B
    Language English
    Publishing date 2016-12-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.6b01980
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  3. Article ; Online: Manifestations of Weak O-H···F Hydrogen Bonding in M(H

    Lacroix, Matthew R / Bukovsky, Eric V / Lozinšek, Matic / Folsom, Travis C / Newell, Brian S / Liu, Yong / Peryshkov, Dmitry V / Strauss, Steven H

    Inorganic chemistry

    2018  Volume 57, Issue 23, Page(s) 14983–15000

    Abstract: ... Eight M( ... ...

    Abstract Eight M(H
    Language English
    Publishing date 2018-11-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.8b02786
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  4. Article: Anaerobic vs. aerobic preparation of silicon nanoparticles by stirred media milling. The effects of dioxygen, milling solvent, and milling time on particle size, surface area, crystallinity, surface/near-surface composition, and reactivity

    Bukovsky, Eric V / Castro, Karlee P / Wyatt, Brent M / Boltalina, Olga V / Strauss, Steven H

    RSC advances. 2016 Nov. 28, v. 6, no. 113

    2016  

    Abstract: A stirred media mill was hermetically sealed in a high-purity dinitrogen atmosphere glovebox and used to prepare silicon nanoparticles (SiNPs) by milling a slurry of 45–90 μm pieces of metallurgical-grade silicon (MGS) suspended in anhydrous heptane (HEP) ...

    Abstract A stirred media mill was hermetically sealed in a high-purity dinitrogen atmosphere glovebox and used to prepare silicon nanoparticles (SiNPs) by milling a slurry of 45–90 μm pieces of metallurgical-grade silicon (MGS) suspended in anhydrous heptane (HEP), heptane containing a small amount of mesitylene (HEP/MES), or mesitylene containing 22 mM pyrene (MES/PYR) under anaerobic and anhydrous conditions (≤5 ppm dioxygen (O2) and water (H2O) vapor). Excess solvent and other volatiles were removed using a rotary evaporator also housed in the glovebox. The SiNPs were further dried at 22 ± 1 °C under vacuum (≤1 × 10−5 Torr) for at least 15 h. The dark-brown or black pyrophoric nanoparticle powders were stored in a high-purity argon atmosphere glovebox. Samples were removed from the glovebox and analyzed by BET surface area (BET-SA) determination, tensimetric titrations with various pressures of O2, PXRD, SEM, TEM, ATR-FTIR, and/or XPS. The effects of (i) anaerobic vs. aerobic milling, (ii) milling fluid, and (iii) milling time on BET-SA, degree of crystallinity, reactivity with O2, and FTIR- or XPS-determined surface/near-surface composition of the SiNPs are discussed. The BET-SA of SiNPs milled anaerobically for 5 h in MES/PYR (258 m2 g−1) was ca. twice as large as the BET-SA for SiNPs milled aerobically in the same milling fluid. In contrast, the BET-SA of SiNPs milled anaerobically in HEP (40 m2 g−1) was four times smaller than for SiNPs milled aerobically in HEP. The PXRD-determined degree of crystallinity steadily decreased and the BET-SA steadily increased over time (1, 2, or 5 h) for SiNPs milled anaerobically in MES/PYR. The degree of crystallinity of SiNPs milled anaerobically in HEP also steadily decreased over time, but the BET-SAs for 1, 2, 3, 4, and 5 h milled samples were essentially the same. MES/PYR milled SiNPs reacted more slowly with O2 and irreversibly absorbed less O2 than HEP milled SiNPs.
    Keywords Fourier transform infrared spectroscopy ; X-ray photoelectron spectroscopy ; airtight storage ; argon (noble gases) ; crystal structure ; heptane ; milling ; nanoparticles ; nitrogen ; oxygen ; particle size ; powders ; scanning electron microscopy ; silicon ; slurries ; solvents ; surface area ; transmission electron microscopy ; vapors
    Language English
    Dates of publication 2016-1128
    Size p. 112370-112380.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ISSN 2046-2069
    DOI 10.1039/c6ra19565b
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article ; Online: PAH/PAH(CF

    Castro, Karlee P / Bukovsky, Eric V / Kuvychko, Igor V / DeWeerd, Nicholas J / Chen, Yu-Sheng / Deng, Shihu H M / Wang, Xue-Bin / Popov, Alexey A / Strauss, Steven H / Boltalina, Olga V

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2019  Volume 25, Issue 59, Page(s) 13547–13565

    Abstract: A solution, solid-state, and computational study is reported of polycyclic aromatic hydrocarbon PAH/PAH( ... ...

    Abstract A solution, solid-state, and computational study is reported of polycyclic aromatic hydrocarbon PAH/PAH(CF
    Language English
    Publishing date 2019-10-07
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-X
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.201902712
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  6. Article ; Online: Single-step gas-phase polyperfluoroalkylation of naphthalene leads to thermodynamic products.

    San, Long K / Bukovsky, Eric V / Kuvychko, Igor V / Popov, Alexey A / Strauss, Steven H / Boltalina, Olga V

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2014  Volume 20, Issue 15, Page(s) 4373–4379

    Abstract: High-temperature gas-phase, solvent- and catalyst-free reaction of naphthalene with an excess of RF I reagent (RF CF3 , C2 F5 , n-C3 F7 , and n-C4 F9 ) was used for the first time to produce a series of highly perfluoroalkylated naphthalene products ... ...

    Abstract High-temperature gas-phase, solvent- and catalyst-free reaction of naphthalene with an excess of RF I reagent (RF CF3 , C2 F5 , n-C3 F7 , and n-C4 F9 ) was used for the first time to produce a series of highly perfluoroalkylated naphthalene products NAPH(RF )n with n=2-5. Four 95+ % pure 1,3,5,7-NAPH(RF )4 with RF CF3 , C2 F5 , n-C3 F7 , and n-C4 F9 were isolated using a simple chromatography-free procedure. These new compounds were fully characterized by (19) F and (1) H NMR spectroscopy, X-ray crystallography (for RF CF3 and C2 F5 ), atmospheric-pressure chemical ionization mass spectrometry, and cyclic and square-wave voltammetry. DFT calculations confirm that the proposed synthesis yields the most stable isomers that have not been accessed by alternative preparation techniques.
    MeSH term(s) Alkylation ; Crystallography, X-Ray ; Electrochemical Techniques ; Fluorine/chemistry ; Gases/chemistry ; Molecular Conformation ; Naphthalenes/chemical synthesis ; Naphthalenes/chemistry ; Solvents/chemistry ; Temperature ; Thermodynamics
    Chemical Substances Gases ; Naphthalenes ; Solvents ; Fluorine (284SYP0193)
    Language English
    Publishing date 2014-04-07
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 1478547-x
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.201304554
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  7. Article ; Online: Latent Porosity in Alkali-Metal M

    Peryshkov, Dmitry V / Bukovsky, Eric V / Lacroix, Matthew R / Wu, Hui / Zhou, Wei / Jones, W Matthew / Lozinšek, Matic / Folsom, Travis C / Heyliger, D Luke / Udovic, Terrence J / Strauss, Steven H

    Inorganic chemistry

    2017  Volume 56, Issue 19, Page(s) 12023–12041

    Abstract: Structures of the alkali-metal hydrates ... ...

    Abstract Structures of the alkali-metal hydrates Li
    Language English
    Publishing date 2017-10-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.7b02081
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Article ; Online: Comparison of the Coordination of B

    Bukovsky, Eric V / Peryshkov, Dmitry V / Wu, Hui / Zhou, Wei / Tang, Wan Si / Jones, W Matthew / Stavila, Vitalie / Udovic, Terrence J / Strauss, Steven H

    Inorganic chemistry

    2017  Volume 56, Issue 8, Page(s) 4369–4379

    Abstract: The synthesis of high-purity ... ...

    Abstract The synthesis of high-purity Na
    Language English
    Publishing date 2017-04-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.6b02920
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  9. Article ; Online: Incremental Tuning Up of Fluorous Phenazine Acceptors.

    Castro, Karlee P / Clikeman, Tyler T / DeWeerd, Nicholas J / Bukovsky, Eric V / Rippy, Kerry C / Kuvychko, Igor V / Hou, Gao-Lei / Chen, Yu-Sheng / Wang, Xue-Bin / Strauss, Steven H / Boltalina, Olga V

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2016  Volume 22, Issue 12, Page(s) 3930–3936

    Abstract: In a simple, one-step direct trifluoromethylation of phenazine with CF3 I we prepared and characterized nine (poly)trifluoromethyl derivatives with up to six CF3 groups. The electrochemical reduction potentials and gas-phase electron affinities show a ... ...

    Abstract In a simple, one-step direct trifluoromethylation of phenazine with CF3 I we prepared and characterized nine (poly)trifluoromethyl derivatives with up to six CF3 groups. The electrochemical reduction potentials and gas-phase electron affinities show a direct, strict linear relation to the number of CF3 groups, with phenazine(CF3)6 reaching a record-high electron affinity of 3.24 eV among perfluoroalkylated polyaromatics.
    Language English
    Publishing date 2016-03-14
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 1478547-x
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.201504122
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  10. Article ; Online: Copper Causes Regiospecific Formation of C4 F8 -Containing Six-Membered Rings and their Defluorination/Aromatization to C4 F4 -Containing Rings in Triphenylene/1,4-C4 F8 I2 Reactions.

    Rippy, Kerry C / Bukovsky, Eric V / Clikeman, Tyler T / Chen, Yu-Sheng / Hou, Gao-Lei / Wang, Xue-Bin / Popov, Alexey A / Boltalina, Olga V / Strauss, Steven H

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2016  Volume 22, Issue 3, Page(s) 874–877

    Abstract: The presence of Cu in reactions of triphenylene (TRPH) and 1,4-C4 F8 I2 at 360 °C led to regiospecific substitution of TRPH ortho C(β) atoms to form C4 F8 -containing rings, completely suppressing substitution on C(α) atoms. In addition, Cu caused ... ...

    Abstract The presence of Cu in reactions of triphenylene (TRPH) and 1,4-C4 F8 I2 at 360 °C led to regiospecific substitution of TRPH ortho C(β) atoms to form C4 F8 -containing rings, completely suppressing substitution on C(α) atoms. In addition, Cu caused selective reductive-defluorination/aromatization (RD/A) to form C4 F4 -containing aromatic rings. Without Cu, the reactions of TRPH and 1,4-C4 F8 I2 were not regiospecific and no RD/A was observed. These results, supported by DFT calculations, are the first examples of Cu-promoted 1) regiospecific perfluoroannulation, 2) preparative C-F activation, and 3) RD/A. HPLC-purified products were characterized by X-ray diffraction, low-temperature PES, and (1) H/(19) F NMR.
    Language English
    Publishing date 2016-01-18
    Publishing country Germany
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 1478547-x
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.201504291
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top