Dimeric supramolecular motifs of two carboxylate-guanidinium compounds.
The structures of N-benzyl-N'-{6-[(4-carboxylatobenzyl)aminocarbonyl]-2-pyridylmethyl}guanidinium, C(23)H(23)N(5)O(3), (I), and N-[2-(benzylaminocarbonyl)ethyl]-N'-{6-[(4-carboxylatobenzyl)aminocarbonyl]-2-pyridylmethyl}guanidinium monohydrate, C(26)H(28)N(6)O(4).H(2)O, (II), both form three-dimensional supramolecular hydrogen-bonded networks based on a dimeric primary synthon involving carboxylate-guanidinium linkages. The differences in the geometries and hydrogen-bonding connectivities are driven by the additional methylpropionamide group and water of crystallization of (II).
Ashiq
Muhammad Irfan
MI
Institute of Chemistry, University of the Punjab, Lahore 54590, Pakistan.
Hussain
Ishtiaq
I
Dixon
Sally
S
Light
Mark E
ME
Kilburn
Jeremy D
JD