Crystal Structure Explains Crystal Habit for the Antiviral Drug Rimantadine Hydrochloride
-
Anatoly Mishnev
and
Dmitrijs Stepanovs
The crystal structure of the antiviral drug rimantadine hydrochloride, C12H22N+ Cl−, has been elucidated by a single-crystal X-ray structure analysis. The structure consists of 1-(1- adamantyl)ethanamine (rimantadinium) cations and chloride anions. The Cl− anions link the rimantadinium cations via N-H...Cl hydrogen bonds into infinite rectangular chord-like structural units with charged groups in the inner channel and aliphatic groups on the surface, and oriented along the unit cell c axis. In contrast to strong electrostatic and hydrogen bonding inner interactions the chords in the crystal are held together by weak van der Waals forces only. A two-fold symmetry axis passes through the center of the chord. By indexing of the crystal faces it has been shown that the maximal dimension of the needle-like crystals coincides with the direction of the unit cell c axis. These structural features explain the crystal habit and the anisotropy of the mechanical properties of rimantadine hydrochloride crystals observed upon slicing and cleavage.
Graphical Abstract
Crystal Structure Explains Crystal Habit for the Antiviral Drug Rimantadine Hydrochloride
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Articles in the same Issue
- Synthesis, Structure and Thermal Decomposition of a New Iodine Inclusion Compound in the 2,2-Dimethylpropane-1,3-diamine/HI/I2 System
- Rapid Microwave Synthesis and Structural Phase Diagram of LnxY1−xMnO3
- Gold-Tin Ordering in SrAu2Sn2
- The Stannides EuPd2Sn2, EuPt2Sn2, EuAu2Sn2, and Eu5.4Sn5.6 – Structure and Magnetic Properties
- Line-Shape Analyses of Solid-state 17O NMR Spectra for Hexagonal Ice
- A Novel Alkali-Metal Hydrido-tris(pyrazolyl)borate (Tp*) Complex. Isolation and Crystal Structure of [(Me2CO)3(NaTp*)2]
- Synthesis and Structure of an Aluminum Bis(3-chloropentanedionate) Isopropoxide: [Al(μ-OiPr)(3-Clacac)2]2
- Carbon-modified MgH2: Experimental and ab-initio Investigations
- Synthesis and Antitumor Activity of Some N2-(Thien-3-yl)amidrazones
- Synthesis of New TGX-221 Analogs
- Crystal Structure Explains Crystal Habit for the Antiviral Drug Rimantadine Hydrochloride
- The Reaction of Cyanamidium Salts with Ylidenecyanamide Derivatives
- Iridoid Glycosides from Lagotis alutacea
- Solid-state and Calculated Electronic Structure of 4-Acetylpyrazole
