Showing 161 - 180 results of 648 for search '"the Pentagon"', query time: 0.08s Refine Results
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    Synthesis, Structure and Bonding in Pentagonal Bipyramidal Cluster Compounds Containing a <i>cyclo</i>-Sn<sub>5</sub> Ring, [(CO)<sub>3</sub>MSn<sub>5</sub>M(CO)<sub>3</sub>]<sup>4−</sup> (M = Cr, Mo) by Sourav Mondal, Wei-Xing Chen, Zhong-Ming Sun, John E. McGrady

    Published 2022-05-01
    “…In this paper, we report the synthesis and structural characterisation of two hetero-metallic clusters, [(CO)<sub>3</sub>CrSn<sub>5</sub>Cr(CO)<sub>3</sub>]<sup>4−</sup> and [(CO)<sub>3</sub>MoSn<sub>5</sub>Mo(CO)<sub>3</sub>]<sup>4−</sup>, both of which have a pentagonal bipyramidal core. The structures are similar to that of previously reported [(CO)<sub>3</sub>MoPb<sub>5</sub>Mo(CO)<sub>3</sub>]<sup>4−</sup> and our analysis of the bonding suggests that they are best formulated as containing Sn<sub>5</sub><sup>4−</sup> rings bridging two zerovalent M(CO)<sub>3</sub> fragments. …”
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    Article
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    On the Aromaticity and <sup>13</sup>C-NMR Pattern of Pentagonal-Pyramidal Hexamethylbenzene Dication [C<sub>6</sub>(CH<sub>3</sub>)<sub>6</sub>]<sup>2+</sup>: A {C<sub>5</sub>(CH<sub>3</sub>)<sub>5</sub>}<sup>−</sup>–{CCH<sub>3</sub>}<sup>3+</sup> Aggregate by Desmond MacLeod-Carey, Alvaro Muñoz-Castro

    Published 2021-11-01
    “…The experimentally characterized hexamethylbenzene dication C<sub>6</sub>(CH<sub>3</sub>)<sub>6</sub><sup>2+</sup> shows a pentagonal-pyramidal structure involving a carbon-capped five-membered ring. …”
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    A comparison between the MoCA and the MMSE visuoexecutive sub-tests in detecting abnormalities in TIA/stroke patients by Mai, L, Sposato, L, Rothwell, P, Hachinski, V, Pendlebury, S

    Published 2016
    “…The likelihood of incorrect mini-mental state examination pentagon copying increased as the numbers of correct MoCA visuoexecutive responses decreased: 2/106 (1.9%) and 9/10 (90.0%) incorrect mini-mental state examination pentagon copying for 5/5 and 0/5 correct Montreal cognitive assessment visuoexecutive tasks, respectively (p for trend 0.005). …”
    Journal article
  18. 178

    zero day / by 293049 Baldacci, David

    Published 2011
    “…Combat veteran John Puller, now working as an investigator for the Army's Criminal Investigative Division, tries to solve the murder of an Army man and his Pentagon contractor wife in their isolated rural home.…”
  19. 179

    Are the Hawks Watching Closely? Reports on China’s Military Power for the US Congress, 2001–2021 by Nenad Stekić

    Published 2022-11-01
    “…This article presents the findings of a study that examined the Pentagon’s perception of China’s security and military affairs. …”
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  20. 180

    STRUCTURAL MOTIFS AND THE STABILITY OF FULLERENES by Austin, S, Fowler, P, Manolopoulos, D, Orlandi, G, Zerbetto, F

    Published 1995
    “…Full geometry optimization has been performed within the semiempirical QCFF/PI model for the 1812 fullerene structural isomers of C60 formed by 12 pentagons and 20 hexagons. All are local minima on the potential energy hypersurface. …”
    Journal article