title: Diisopropyl-ammonium methane-sulfonate.
abstract: The title molecular salt, C(6)H(16)N(+)·CH(3)SO(3) (-), has been determined at 150 K. Two diisopropyl-ammonium cations (dipH) and two anions form N-H⋯O hydrogen-bonded cyclic dimers lying around centers of symmetry. Only two of the three O atoms of the methane-sulfonate anion are involved in hydrogen bonding, resulting in slightly longer S-O bond lengths. The title structure represents an example of a sulfonate anion that is part of a hydrogen-bonding R(4) (4)(12) graph-set motif, which is well known for related dipH acetates. Additionally, the Raman and the IR spectroscopic data for the title compound are presented.
authors.affiliation: Institut für Anorganische Chemie und Strukturchemie, Lehrstuhl II: Material- und Strukturforschung, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf,  Germany.
authors.forename: Guido J
authors.initials: GJ
authors.lastname: Reiss
authors.forename: Michaela K
authors.initials: MK
authors.lastname: Meyer
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