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A new small molecule gelator and 3D framework ligator of lead(ii)

Knichal, Jane V., Gee, William J., Burrows, Andrew D., Raithby, Paul R., Wilson, Chick C. (2015) A new small molecule gelator and 3D framework ligator of lead(ii). CrystEngComm, 17 (42). pp. 8139-8145. ISSN 1466-8033. (doi:10.1039/c5ce01689d) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:61843)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
https://doi.org/10.1039/c5ce01689d

Abstract

Reacting equimolar quantities of 5-allenyl-1,3-benzenedicarboxylic acid (H2abd) with lead(II) acetate trihydrate in N,N-dimethylformamide (DMF) under solvothermal conditions results in formation of a metallogel with a critical gelation percentage of 1% w/v. Elemental analysis performed on the gel provided a molecular composition ratio of [Pb(abd)(H2O)]n (1). Viewing the gel by scanning electron microscopy (SEM) identified an entangled network of cross-linked nano-fibres. 1H-NMR aliquots of hydrated lead(II) acetate added to a solution of H2abd in deuterated DMF allows inferences to be made about solution-state behaviour that occurs during the initial gel aggregation stage. Under non-solvothermal conditions, combining H2abd and hydrated lead(II) acetate resulted in formation of single crystals suitable for X-ray diffraction, which were identified as a 3D coordination polymer with composition [Pb(abd)(DMF)] (2). Structural features observed within this 3D coordination polymer provide the basis for assigning the molecular structure to the fibrils present within gel 1. This assertion is supported by comparable vibrational profiles taken from a sample of dried gel 1 to that of crystalline 2, and the matching of early solution-state 1H-NMR spectroscopic trends to later solid-state observations.

Item Type: Article
DOI/Identification number: 10.1039/c5ce01689d
Subjects: Q Science
Q Science > QD Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Michael Woods
Date Deposited: 25 May 2017 13:56 UTC
Last Modified: 29 May 2019 19:05 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/61843 (The current URI for this page, for reference purposes)
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