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Crystals 2016, 6(1), 6; doi:10.3390/cryst6010006

Constructor Graphs as Useful Tools for the Classification of Hydrogen Bonded Solids: The Case Study of the Cationic (Dimethylphosphoryl)methanaminium (dpmaH+) Tecton

Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf 40225, Germany
Academic Editor: Sławomir J. Grabowski
Received: 22 November 2015 / Revised: 19 December 2015 / Accepted: 28 December 2015 / Published: 31 December 2015
(This article belongs to the Special Issue Analysis of Hydrogen Bonds in Crystals)
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Abstract

The structural chemistry of a series of dpmaH (dpmaH = (dimethylphosphoryl)methanaminium) salts has been investigated using constructor graph representations to visualize structural dependencies, covering the majority of known dpmaH salts. It is shown that the structurally related α-aminomethylphosphinic acid can be integrated in the systematology of the dpmaH salts. Those dpmaH salts with counter anions that are weak hydrogen bond acceptors (ClO4, SnCl62−, IrCl62−,I) tend to form head-to-tail hydrogen bonded moieties purely consisting of dpmaH+ cations as the primarily structural motif. In structures with weak to very weak hydrogen bonds between the dpmaH+ cations and the counter anions, the anions fill the gaps in the structures. In salts with medium to strong hydrogen bond acceptor counter ions (Cl, NO3, PdCl42−), the predominant structural motif is a double head-to-tail hydrogen bonded (dpmaH+)2 dimer. These dimeric units form further NH···X hydrogen bonds to neighboring counter anions X, which results in one-dimensional and two-dimensional architectures. View Full-Text
Keywords: hydrogen bonding; constructor graph; crystal engineering; pattern analysis; phosphoryl compounds hydrogen bonding; constructor graph; crystal engineering; pattern analysis; phosphoryl compounds
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Reiss, G.J. Constructor Graphs as Useful Tools for the Classification of Hydrogen Bonded Solids: The Case Study of the Cationic (Dimethylphosphoryl)methanaminium (dpmaH+) Tecton. Crystals 2016, 6, 6.

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