abstract
In solid-state, different non-covalent interactions between different parts of molecules play a key role in the formation of supramolecular architecture through the molecular assembly. Choice of the appropriate ligand is very crucial for such a solid. In this work, 5-phenyl-1,3,4-oxadiazole-propionate ligand and water form a one-dimensional polymer with the help of Gd(III) metal ion. Each Gd center of the polymer has a polarized amphiphilic environment. It has three water molecules on one side and a hydrophobic aromatic ligand is on a different side. This unique feature of ligand distribution help to recognize another part of the second 1D chain of the same polymer. In this way, such 1D polymer chains are self-assembled together and form an infinite 2D sheet. The hydrogen bonding between water ligands and 1,3,4-oxadiazole nitrogen of the organic ligand of two consecutive polymeric chains is the main binding force in the selfassembly process. These interactions bring aromatic rings together to form infinitely long pi-staking interactions along the chain axis. These 1D chains create a 2C1 type of topology in the solid which was found, in some cases, in the metal-organic framework, with small organic, and inorganic molecules.
keywords
PUSH-PULL CHROMOPHORES; ORGANIC FRAMEWORKS; CRYSTAL-STRUCTURES; PROGRAM
subject category
Chemistry
authors
Sadhukhan, A; Brandao, P; Saha, S; Mal, D; Sepay, N
our authors
Paula Cristina Ferreira da Silva Brandão
Assistant Researcheracknowledgements
Financial support from Department of Science & Technology and Biotechnology, Government of West Bengal, by a grant (Grant No. 28(sanc)-ST/P/S&T/15G-4/2018 to D. M.). The Department of Chemistry, Lady Brabourne College, is gratefully acknowledged for research facilities.