Results 181 to 190 of about 58,416 (219)

Temperature Dependent Stabilities of the C32 and K@C32, Ca@C32 and Sc@C32 Endohedral Metallofullerene Isomeric Set

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
Sarah A. Church   +2 more
openaire   +1 more source

C32 CONSTRICTIVE PERICARDITIS WITH PLATYPNEA ORTHODEOXIA

European Heart Journal Supplements, 2023
Abstract A 56–year–old woman is admitted to our centre for biventricular heart failure. In anamnesis she reports a submandibular phlegmon complicated by pleuropericarditis at the age of 13 years requiring repeated pericardiocentesis. In the last three years she has been hospitalised twice for ascites and discharged with a diagnosis of ...
L Gaiero   +5 more
openaire   +1 more source

Different isotope compositions of C32 DPEP and C32 etioporphyrin III in oil shale

The Science of Nature, 1989
Le schiste bitumineux Julia Creek (Cretace, Australie) est utilise pour etudier la relation entre les cycloalkanoporphyrines et les polyalkylporphyrines a partir d'une comparaison des compositions ...
R, Ocampo   +5 more
openaire   +2 more sources

Theoretical study of metallofullerenes M@C32

Journal of Molecular Structure: THEOCHEM, 1998
Abstract 14 systems of metal atoms, embedded inside the C 32 cage, have been calculated and analyzed using the ab initio quantum chemistry Gamess program. We study their electronic structure, compare their stability. The metal atom with even electrons interjected inside the C 32 cage is more stable than the metal atom with odd electrons.
Lin, MH   +4 more
openaire   +2 more sources

Orthorhombic C32: a novel superhard sp3 carbon allotrope

Physical Chemistry Chemical Physics, 2013
Using a recently developed 'Crystal structure AnaLYsis by Particle Swarm Optimization' (CALYPSO) algorithm on a structural search, we predicted a novel sp(3) carbon allotrope possessing an orthorhombic lattice with the space group Cmmm (oC32). The calculated elastic constants and the simulated hardness revealed that oC32 simultaneously possesses ultra ...
Miao, Zhang   +5 more
openaire   +2 more sources

Further C32 triterpenoids from Neolitsea pulchella

Journal of the Chemical Society, Perkin Transactions 1, 1973
Three further C32 triterpenoids isolated from the stems of Neolitsea pulchella, have been shown to be 3β,24ξ-dimethoxy-24,25-dimethyl-lanost-9(11)-ene (I). 24ξ-methoxy-24,25-dimethyl-lanost-9(11)-en-3-one (II), and 24,24-dimethyl-lanosta-9(11),25-dien-3β-ol (III). Compounds (I) and (II) are new.
Wai-Shing Chan, Wai-Haan Hui
openaire   +1 more source

Theoretical study on C32 fullerenes and derivatives

Chemical Physics Letters, 2006
Abstract 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 ...
Yingfei Chang   +4 more
openaire   +1 more source

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