IR/MS study on 3,5-dimethyladamantanamine hydrochloride salt

Huixue Ren; Jimao  Lin; Yinshan Qi; Yeqing Zhang; Qinghe Zhang

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IR/MS study on 3,5-dimethyladamantanamine hydrochloride salt

Huixue Ren 1 * #,Jimao Lin 2,Yinshan Qi 3,Yeqing Zhang 3,Qinghe Zhang 3

1.ShanDong JianZhu University

2.ShanDong University

3.ZiBo HuaLian Mining Industry CO.,LTD

*Correspondence author

#Submitted by

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Funding: none

Opened online: 8 January 2007

Accepted by: none

Citation: Huixue Ren,Jimao Lin,Yinshan Qi.IR/MS study on 3,5-dimethyladamantanamine hydrochloride salt[OL]. [ 8 January 2007] http://en.paper.edu.cn/en_releasepaper/content/10604

Infrared spectra shows that the characteristic absorptions of 3,5-Dimethyladamantanamine hydrochloride are the overtones of NH3+ deformation vibrations at frequencies of 3171.9 cm-1, 2993.8 cm-1, and the overtones involving NH3+ deformation vibration in 2600-2000 cm-1 region. The NH3+asymmetry and symmetry deformation vibrations were found at 1596.2 and 1503.5 cm-1 with a medium intense. The 1311.6 cm-1 and 1192.2 cm-1 are attributed to rocking vibration and C-N bond stretching vibration respectively. The absorption in 2850-2950 cm-1 indicate the presence of CH3, CH2 and CH groups. The ESI mass spectrum only gives three peaks but shows essential information of molecular structure. The ]M+H] ion undergoes elimination of NH3, forming m/e 163. The m/e 107 peak is produced by a simple carbon-carbon fragmentation, followed by two-step six-numbered MaLafferty rearrangements with elimination of isobutene.

Keywords:Infrared spectra; ESI mass spectrum; 3,5-Dimethyladamantanamine hydrochloride; diastereomeric forms

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