Results 301 to 310 of about 414,156 (339)
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Electronic structure of heterocyclic ring chain polymers
Synthetic Metals, 1999The band gaps, ionization potentials and electron affinities of conjugated chain polymers comprising heterocyclic aromatic rings are studied systematically as a function of atomic substitutions with N, O and S using first principles density functional calculations.
Brocks, G., Tol, A.E.M., Tol, Arie
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Solvent‐Catalyzed Ring–Chain–Ring Tautomerization in Axially Chiral Compounds
Chemistry – A European Journal, 2012AbstractThe mechanism of ring–chain–ring tautomerization and the prominent effect of the solvent environment have been computationally investigated in an effort to explain the enantiomeric interconversion observed in 2‐oxazolidinone derivatives, heterocyclic analogues of biphenyl atropisomers, which were isolated as single stable enantiomers and have ...
Asli, Yildirim +6 more
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Chain–ring interconversion in metasilicates
J. Chem. Soc., Chem. Commun., 1981Theoretical studies indicate that lattices of the chain and ring varieties of CaSiO3 fit together with only slight mis-match; high resolution electron microscopic studies of a sample undergoing conversion from chain- to ring-structure, however, indicate that intergrowths do not occur and, instead, the chain structure recrystallises via a glassy phase ...
Wen Shu-Lin, S. Ramdas, D. A. Jefferson
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Periodic Borromean rings, rods and chains
Acta Crystallographica Section A Foundations and AdvancesThis article describes periodic polycatenane structures built from interlocked rings in which no two are directly linked. The 2-periodic vertex-, edge- and ring-transitive families of hexagonal Borromean rings are described in detail, and it is shown how these give rise to 1- and 3-periodic ring-transitive (isonemal) families.
Michael O'Keeffe, Michael M. J. Treacy
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Completely Primary Rings: IV. Chain Conditions
The Annals of Mathematics, 1952In [1], [2] and [3] no chain conditions occur anywhere; the strongest "finiteness condition" which had to be postulated for certain parts of the theory was that the rings have nilpotent radicals. (Square brackets refer to the references; [1], [2] and [3] will again be referred to as CPI, CPII and CPIII.) In the present paper we apply the results of CPI,
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Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg, 1973
Clark, W. Edwin, Drake, David A.
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Clark, W. Edwin, Drake, David A.
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The assembly, regulation and function of the mitochondrial respiratory chain
Nature Reviews Molecular Cell Biology, 2021Irene Vercellino, Leonid A Sazanov
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Status and perspectives of crystalline silicon photovoltaics in research and industry
Nature Reviews Materials, 2022Christophe Ballif +2 more
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