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--- molecules:ism:mecn [2026/04/13 12:30] – mueller
+++ molecules:ism:mecn [2026/04/13 12:55] (current) – mueller
@@ Line 95: / Line 95: @@
 **[[https://doi.org/10.1016/j.jms.2021.111449|Toward a Global Model of the Interactions in Low-lying States of Methyl Cyanide: Rotational and Rovibrational Spectroscopy of the v4 = 1 State and Tentative Interstellar Detection of the v4 = v8 = 1 State in Sgr B2(N)]]**\\
 //J. Mol. Spectrosc.// **378**, Art. No. 111449 (2021).\\
+In their survey Re-exploring Molecular Complexity with ALMA (ReMoCA) of Sagittarius B2(N) at 3 mm (84.1 - 114.4 GHz), CH<sub>3</sub>CN transitions up to //v//<sub>4</sub> = 1 were identified confidently in SgrB2(N1S), a position in the main hot core with relatively narrow lines. The global methyl cyanide model also indicates several lines in //v//<sub>4</sub> = //v//<sub>8</sub> = 1 to be well above the 3σ limit, but all but one lines are blended by much stronger lines.\\
+\\
+Some time later,\\
+H. S. P. Müller, A. Belloche, F. Lewen, and S. Schlemmer\\
+reported on\\
+**[[https://doi.org/10.1016/j.jms.2021.111449|Rotational Spectroscopy as a Tool to Study Vibration−Rotation Interaction: Investigations of (13)CH3CN and CH3(13)CN up to v8 = 2 and a Search for v8 = 2 Transitions toward Sagittarius B2(N)]]**\\
+//ACS Earth Space Chem.// **10**, 578 (2026).\\
+The same survey as in the previous paragraph aling with the extended model were used to try to identify v8 = 2 transitions of <sup>13</sup>CH<sub>3</sub>CN and of CH<sub>3</sub><sup>13</sup>CN. While according to the model some lines were expected to be above the 3σ limit, all these lines were blended with much stronger lines. Nevertheless, these observations indicate the need for these data.\\
+\\
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