686 items found

Tags: Chemical Sciences not elsewhere classified Pharmacology Physical Sciences not elsewhere classified

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  • dataset

    Electronic Tuning of Mg<sub>2</sub>Cu<sub>6</sub>Ga<sub>5</sub>. A Route to C...

    Studies of Mg2Cu6Ga5 reveal that this compound contains incomplete Bergman clusters in its structure and shows a pseudogap and empty bonding states just above the Fermi energy...
  • dataset

    Coordination Copolymerization of Severely Encumbered Isoalkenes with Ethylene...

    This contribution describes the implementation of the binuclear organotitanium “constrained geometry catalysts” (CGCs),...
  • dataset

    r37980778c78--1267032f9b82bd6f3e84436e545df86c

    C,D-ring symmetric chlorins 8 were prepared in 47−85% yield, on scales up to several hundred milligrams, by condensation of appropriately substituted bis-formyldihydrodipyrrins...
  • dataset

    Homoatomic Stella Quadrangula [Tl<sub>8</sub>]<sup>6−</sup> in Cs<sub>18</sub...

    Cs18Tl8O6 was synthesized reacting the binary compounds CsTl and Cs2O. According to single crystal X-ray analysis, the title compound crystallizes as a novel structure type in...
  • dataset

    Highly Activated Vinyl Hydrogen in a Significantly Twisted Styrene

    The novel example of a vinylic hydrogen more reactive than a benzylic hydrogen was found by treatment of a twisted styrene derivative with a strong base followed by D2O...
  • dataset

    Thermal Conductivities of Alternatives to CFC-11 for Foam Insulation

    The present work examines the thermal conductivities of several dilute vapors which are potential alternatives to chlorofluorocarbons (CFCs) for cellular-plastic foams. Thermal...
  • dataset

    r37980778c78--bd0bde9a0115982ec94b687d90366bb5

    The unusual luminescence behavior of the two-coordinate gold(I) carbene complex, Au{C(NHMe)2}2·0.5(acetone), is reported. Upon freezing in a liquid N2 bath, the colorless,...
  • dataset

    Synthesis, Characterization, and Crystal Growth of Cs<sub>2</sub>Hg<sub>3</su...

    This paper reports, for the first time, the second-order nonlinear optical (NLO) property of Cs2Hg3I8, a new potential NLO material in the infrared region. The compound exhibits...
  • dataset

    r37980778c78--ee1aa3d805ad1606b75a22b9b0be05ff

    An efficient four-step synthesis of N-BOC-5-syn- and 5-anti-carboxymethanopyrrolidines (12 and 13) and the conversion of 12 to N-BOC-methanopyrrolidine (2) are described.
  • dataset

    r37980778c78--857e3e72d75b6cd28e0058c646588f22

    Three lanthanide-thiophenedicarboxylate hybrid compounds, [(Eu2(TDC)3(CH3OH)2·(CH3OH)] (1), [(Yb2(TDC)3(DMF)(H2O)·(CH3CH2OH)] (2), and [(Tb2(TDC)3(H2O)4] (3) (where TDC is...
  • dataset

    Crystal Engineering of a Permanently Porous Network Sustained Exclusively by ...

    A permanently porous crystalline solid is reported that is sustained exclusively by charge-assisted H-bonds. The single-crystal X-ray structure of a layered H-bonded solid,...
  • dataset

    Applications of Bis(1-R-imidazol-2-yl)disulfides and Diselenides as Ligands f...

    Bis(1-R-imidazol-2-yl)disulfides, (mimR)2 (R = Ph, But), and diselenides, (seimMes)2, serve as bidentate N,N-donor ligands for main-group and transition metals. For example,...
  • dataset

    Competing Patterns of Weak Directional Forces in Pressure-Frozen CH<sub>2</su...

    Isostructural relations and phase transitions of dihalomethanes have been rationalized by the competing patterns of CH···halogen hydrogen bonds and halogen···halogen...
  • dataset

    Nonstoichiometry, Structure, and Electrical Properties of "SrPrO<sub>3</sub>"

    The single-phase composition with the perovskite structure type in the Sr−Pr−O system has been identified as (Sr0.935Pr0.043□0.022)Pr1.0O3 from neutron diffraction refinements,...
  • dataset

    1,8-Bis(diphenylmethylium)naphthalenediyl Dication as an Organic Oxidant:  Sy...

    1,8-Bis(diphenylmethylium)naphthalenediyl dications promoted oxidative coupling of various N,N-dialkylanilines to afford the corresponding para-coupled bisanilines, benzidines,...
  • dataset

    The Use of Imidazolium-2-dithiocarboxylates in the Formation of Gold(I) Compl...

    The imidazolium-2-dithiocarboxylate ligands IPr·CS2, IMes·CS2, and IDip·CS2 react with [AuCl(PPh3)] to yield [(Ph3P)Au(S2C·IPr)]+, [(Ph3P)Au(S2C·IMes)]+, and...
  • dataset

    r37980778c78--c7ce3793de8830f55f7f32851009bf95

    Reaction of the Au(I) N-heterocyclic carbene (NHC) compound [Au(im(CH2py)2)2]PF6 with 2 equiv of [Cu(MeCN)4]PF6 affords the tricationic compound Au(im(CH2py)2)2(Cu(MeCN)2)23...
  • dataset

    Synthesis, Structure, and Isomerization of Decapentynylcorannulene:  Enediyne...

    Decapentynylcorannulene (5) is prepared via aryl−alkyne coupling chemistry of decachlorocorannulene and trimethylstannylpentyne. The crystal structure of 5 is compared with the...
  • dataset

    Guest Inclusion and Structural Dynamics in 2-D Hydrogen-Bonded Metal−Organic ...

    Guest Inclusion and Structural Dynamics in 2-D Hydrogen-Bonded Metal−Organic Frameworks
  • dataset

    Charge-Transfer Salts via Cocrystallization of the Cationic Ferrocenyl Donor ...

    Four new charge-transfer (CT) salts based on the cationic ferrocenylmethylpyridinium (fmp) donor (CpFeCp-CH2-Py+) and polyoxometalate (POM) acceptors, Lindqvist-type [M6O19]2−...