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Ima2 C32: An orthorhombic carbon allotrope with direct band gap
Diamond and Related Materials, 2021Abstract Ima2 C32 with sp2 + sp3 hybridized network is proposed in this work, and the structural properties, electronic properties, absorption spectra, elastic properties, elastic anisotropy properties, and stability of Ima2 C32 are studies by density functional theory. Ima2 C32 is dynamically stable, thermodynamically stable, and mechanically stable.
Qingyang Fan +5 more
semanticscholar +3 more sources
Chemical Data Collections, 2020
Abstract Since their discovery in 1985, Fullerenes have been an intriguing subject due to their structure and varying stabilities and potential use in medical and energy research. In this article, we present the temperature dependent thermodynamic stabilities of the C32, K@C32, Ca@C32, and Sc@C32 isomeric sets as computed at temperatures ranging from
Timothy J. Fuhrer +2 more
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Abstract Since their discovery in 1985, Fullerenes have been an intriguing subject due to their structure and varying stabilities and potential use in medical and energy research. In this article, we present the temperature dependent thermodynamic stabilities of the C32, K@C32, Ca@C32, and Sc@C32 isomeric sets as computed at temperatures ranging from
Timothy J. Fuhrer +2 more
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Synthesis of the C23–C32 fragment of spirangien
Tetrahedron Letters, 2007Abstract The synthesis of the C23–C32 fragment of spirangien A is reported using Evans’ alkylation, Evans–Metternich aldol reaction and a substrate controlled stereoselective reduction.
Markus Kalesse, Michael Lorenz
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Different isotope compositions of C32 DPEP and C32 etioporphyrin III in oil shale
The Science of Nature, 1989International ...
OCAMPO-TORRES, Ruben +6 more
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Adjuvant properties of a simplified C32 monomycolyl glycerol analogue.
Bioorganic & Medicinal Chemistry Letters, 2009A simplified C(32) monomycolyl glycerol (MMG) analogue demonstrated enhanced immunostimulatory activity in a dioctadecyl ammonium bromide (DDA)/Ag85B-ESAT-6 formulation. Elevated levels of IFN-gamma and IL-6 were produced in spleen cells from mice immunised with a C(32) MMG analogue comparable activity to the potent Th1 adjuvant, trehalose 6,6'-di ...
Veemal Bhowruth +6 more
semanticscholar +4 more sources
Theoretical study on C32 fullerenes and derivatives
Chemical Physics Letters, 2006Abstract A series of B3LYP/6-31G∗ calculations reveal that the D3 isomer is the most stable isomer of C32 carbon cages. The derivatives of it, including additional productions (C32H2, C32Cl2), hetero-fullerenes (C30B2, C30N2), isoelectronic molecules ( C 30 B 2 2 - , C 30 N 2 2 + ) and dimers have ...
Rongshun Wang +4 more
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Structures and stability of the hydrides of C32, C34 and C36
Chemical Physics Letters, 2008Abstract A systematic study was performed on C32H32, C34H34 and C36H36 at the Hartree–Fock and density functional theory levels of theory. The calculated results demonstrate that the lowest-energy isomer is classic for C32H32 and non-classic for C34H34 and C36H36.
Li-Hua Gan, Jian-Qiang Zhao
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Selective synthesis of C32- and C20-monoiodinated chlorophyll derivatives
Tetrahedron Letters, 2015Abstract A chlorophyll derivative possessing an iodine atom at the C3-moiety was synthesized from methyl pyropheophorbide- a for the first time using phenyliodine bis(trifluoroacetate) and I 2 . The use of larger amounts of reagents resulted in additional iodination at the C20-position, thus affording the 3,20-diiodo derivative.
T. Oba +4 more
semanticscholar +3 more sources
ChemInform Abstract: C32‐Amino Derivatives of the Immunosuppressant Ascomycin.
ChemInform, 1997AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Mary Jo Staruch +6 more
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Organic Letters, 2015
The synthesis of five diastereomeric model compounds incorporating the C32-C46 segment of the antitumor marine natural product hemicalide has been achieved through a convergent approach relying on the 1,4-addition of an alkenyl boronate to an α,β ...
Simon Specklin +9 more
semanticscholar +1 more source
The synthesis of five diastereomeric model compounds incorporating the C32-C46 segment of the antitumor marine natural product hemicalide has been achieved through a convergent approach relying on the 1,4-addition of an alkenyl boronate to an α,β ...
Simon Specklin +9 more
semanticscholar +1 more source