Detection of C 8 H - and Comparison with C 8 H toward IRC +10 216
نویسندگان
چکیده
منابع مشابه
A C - Band Spectral Scan of Irc + 10 216
We report the results of the presently lowest frequency spectral line survey of the asymptotic giant branch carbon star IRC+10 216. The entire Arecibo C band (4–6 GHz) was observed with a noise level of 0.3 mJy (1 ). We report the detection of HC5N (J 1⁄4 2 1), which is the lowest frequency transition of the HC5N molecule found in the envelope of IRC +10 216. The HC5N J 1⁄4 2 column density der...
متن کاملK rate coefficients for the reaction of OH with i − C 3 H 7 I , n − C 3 H 7 I and C 3 H 8
The kinetics of the title reactions were investigated using the laser photolysis resonance fluorescence method, employing the sequential two-photon dissociation of NO2 in the presence of H2 as the OH source. The 298 K rate constant for OH + C3H8 was found to be (1.15 ± 0.1) × 10−12 cm s−1, in excellent agreement with the literature recommendation, and with a separate determination using HNO3 ph...
متن کامل5-Fluoro-6′H,7′H,8′H-spiro[indoline-3,7′-pyrano[3,2-c:5,6-c′]di-1-benzopyran]-2,6′,8′-trione
In the title compound, C(26)H(12)FNO(6), the central pyran ring and both benzopyran systems are nonplanar, having total puckering amplitudes of 0.139 (2), 0.050 (1) and 0.112 (2) Å, respectively. The central pyran ring adopts a boat conformation. The crystal structure is stabilized by C-H⋯O, N-H⋯O, N-H⋯F and C-H⋯π inter-actions.
متن کاملIL-1β (+3953 C/T) and IL-8 (-251 A/T) Gene Polymorphisms in H. pylori Mediated Gastric Disorders
Background: Previous studies imply that IL-1 and IL-8 gene variations may play a crucial role in the genetic predisposition to different gastric disorders upon H. pylori infection. Objective: The aim of this study was to determine the potential association between the prevalence of certain polymorphic sites and the risk of gastric disorders in Iranian population. Methods: One hundred and forty ...
متن کاملReductive Coupling of H - H , H - C , and C - C Bonds from Pd Complexes
Reductive coupling to form H-H, C-H, and C-C bonds from transition-metal complexes is of fundamental importance in many catalytic processes. However, despite numerous experimental' and theoretical2 studies, there remain a number of puzzles concerning these processes. For example, reductive elimination of methane from Pt(H)(CH3)(PPh3), is quite facile at -25 'C,ld while Pt(CH3)2(PPh,)2 is qkite ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2007
ISSN: 0004-637X,1538-4357
DOI: 10.1086/520704