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| molecules:ism:prcn [2020/09/18 14:09] – [On the Detection of i-Propyl Cyanide in Space] mueller | molecules:ism:prcn [2022/06/28 16:54] (current) – [On the Detection of n-Propyl Cyanide in Space] mueller |
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| [[molecules:ism:aan|Aminoacetonitrile]] was detected earlier in the course of this molecular line survey. At a rotational temperature of about 150 K, very many transitions of //n//-propyl cyanide have non-negligible intensities. However, many of them are blended severely with emissions or absorptions of other molecules. Nevertheless, a considerable number of transitions of the lower energy //anti//-conformer are not or only slightly blended. Its column density is about a factor of 100 lower in Sgr B2(N) than those of methyl and ethyl cyanide. | [[molecules:ism:aan|Aminoacetonitrile]] was detected earlier in the course of this molecular line survey. At a rotational temperature of about 150 K, very many transitions of //n//-propyl cyanide have non-negligible intensities. However, many of them are blended severely with emissions or absorptions of other molecules. Nevertheless, a considerable number of transitions of the lower energy //anti//-conformer are not or only slightly blended. Its column density is about a factor of 100 lower in Sgr B2(N) than those of methyl and ethyl cyanide. |
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| //n//-Propyl cyanide is the third alkyl cyanide to be detected in space after methyl cyanide, [[molecules:ism:mecn|CH<sub>3</sub>CN]], and ethyl cyanide, [[molecules:ism:etcn|C<sub>2</sub>H<sub>5</sub>CN]]. | //n//-Propyl cyanide is the third alkyl cyanide to be detected in space after methyl cyanide, **[[molecules:ism:mecn|CH<sub>3</sub>CN]]**, and ethyl cyanide, **[[molecules:ism:etcn|C<sub>2</sub>H<sub>5</sub>CN]]**. |
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| Transitions of the lower energy //g//-//n//-propyl cyanide were detected unambiguously in the course of a line survey of the same region carried out with ALMA which lead to the detection of //i//-propyl cyanide as described in the paragraphs further below.\\ | Transitions of the lower energy //g//-//n//-propyl cyanide were detected unambiguously in the course of a line survey of the same region carried out with ALMA which lead to the detection of //i//-propyl cyanide as described in the paragraphs further below.\\ |