Mostrando 241 - 260 Resultados de 861 Para Buscar '"Butanés"', tiempo de consulta: 0.08s Limitar resultados
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    “…The 1,1′-(butane-1,4-di­yl)diimidazole ligands are located around two sets of inversion centers and bridge Zn(II) ions, forming a zigzag polymeric chain. …”
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  4. 244
    “…The Cu(I) ion, together with its chelating butane-1,3-dione group, is mutually coplanar [greatest displacement of an atom from this plane = 0.037 (1) Å], and the Cu(I) ion lies slightly above [0.013 (1) Å] the plane. …”
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  9. 249
    “…The title mol­ecule, C(32)H(30)F(2)N(2), a product of the condensation reaction of butane-2,3-dione and 4-fluoro-2-(1-phenyl­eth­yl)aniline, is located about an inversion centre. …”
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  10. 250
    por Zhang, Shuguang, Zhuang, Junpeng
    Publicado 2014
    “…The puckering angle of the cyclo­butane ring is 32.22 (7)°, which is the largest among reported tetra­aryl-substituted cyclo­butanes. …”
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  11. 251
    “…The title compound, C(11)H(15)N(3)OS, is a thio­semicarbazone derivative of the raspberry ketone rheosmin [systematic name: 4-(4-hy­droxy­phen­yl)butane-2-one]. The mol­ecule deviates from planarity, with the bridging C—C—C=N torsion angle equal to −101.3 (2)°. …”
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  12. 252
    “…Such combined optimizations enable effective (electro)catalytic dehydrogenation of n-butane to butenes and 1,3-butadiene. The C4 alkene yield is higher than 50% while the peak power density of the SOFC reached 212 mW/cm(2) at 650 °C. …”
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  13. 253
    “…In the present study, we demonstrate that the compound 4-(phenylsulfanyl) butan-2-one (4-PSB-2) is effective in enhancing fear memory retrieval of wild-type and 3xTg-AD mice by reducing the expression of TNF-α, COX-2, and iNOS. …”
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  14. 254
    “…[Image: see text] Unprecedented self-assembly of a novel 14-membered cyclic bis-thiosemicarbazone or/and a 28-membered cyclic tetrakis-thiosemicarbazone upon acid-promoted cyclooligomerization of 4-(4-thiosemicarbazido)butan-2-one hydrazone has been discovered. A thorough study of the influence of various factors on the direction of macrocyclization provided the optimal conditions for the highly selective formation of each of the macrocycles in excellent yields. …”
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