Ghosh, Dipankar and Ferfolja, Katja and Drabavičius, Žygimantas and Steed, Jonathan W. and Damodaran, Krishna K. (2018) 'Crystal habit modification of Cu(ii) isonicotinate–N-oxide complexes using gel phase crystallisation.', New journal of chemistry., 42 (24). pp. 19963-19970.
We report the crystallisation of three forms of the copper(II) isonicotinate–N-oxide complex and their phase interconversion via solvent-mediated crystal-to-crystal transformation. The different forms of the copper complex have been isolated and characterised by single crystal X-ray diffraction. Gel phase crystallisation performed in hydrogels, low molecular weight gels and gels of a tailored gelator showed crystal habit modification. Crystallisation in aqueous ethanol resulted in the concomitant formation of blue (form-I) and green (form-II/IV) crystals while the use of a low molecular weight gel resulted in the selective crystallization of the blue form-I under identical conditions. Comparison of the gel phase and the solution state crystallisation in various solvent compositions reveals that the blue form-I is the thermodynamically stable form under ambient conditions.
|Full text:||(AM) Accepted Manuscript|
Download PDF (788Kb)
|Publisher Web site:||https://doi.org/10.1039/C8NJ05036H|
|Date accepted:||01 November 2018|
|Date deposited:||14 December 2018|
|Date of first online publication:||02 November 2018|
|Date first made open access:||01 November 2019|
Save or Share this output
|Look up in GoogleScholar|