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Two‐ and Three‐Dimensional Hydrogen‐Bonded Networks Built from 1,3,5‐[(HO) 2 (O)P] 3 C 6 H 3 and 4‐(Dimethylamino)pyridine
Author(s) -
Mehring Michael
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200300843
Subject(s) - chemistry , hydrogen bond , crystallography , benzene , hydrogen , pyridine , crystal structure , stereochemistry , molecule , medicinal chemistry , organic chemistry
Crystallisation of 3,5‐bis(phosphonophenyl)phosphonic acid, 1,3,5‐[(HO) 2 (O)P] 3 C 6 H 3 , from MeOH/H 2 O in the presence of 4‐(dimethylamino)pyridine, 4‐(Me 2 N)C 5 H 4 N, gave [1‐{(HO) 2 (O)P}‐3,5‐{(HO)(O) 2 P} 2 C 6 H 3 ] 2− [{4‐(Me 2 N)C 5 H 4 NH} + ] 2 ( 2 ) and [1,3‐{(HO) 2 (O)P} 2 ‐5‐{(HO)(O) 2 P}C 6 H 3 ] − [4‐(Me 2 N)C 5 H 4 NH] + ( 3 ). Single‐crystal X‐ray diffraction analyses revealed a two‐ and a three‐dimensional hydrogen‐bonded network for compounds 2 and 3 , respectively. Compound 2 is composed of layers which are formed by hydrogen‐bonded motifs of the type R2,2(8) and R4,4(16). These motifs are connected within the layer by additional hydrogen bonds and the benzene spacer. The cation [4‐(Me 2 N)C 5 H 4 NH] + is located between the layers and determines the interlayer separation of approximately 6.5 Å. In compound 3 a layered network of the hydrogen‐bonded building units R2,3(10) was observed. These units are interconnected by four additional hydrogen bonds within the network. The benzene spacer links the adjacent layers to give a three‐dimensional structure. Within this network, channels with internal dimensions of ca. 8.5 × 11.3 Å 2 which are occupied by the [4‐(Me 2 N)C 5 H 4 NH] + cations were observed. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)