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Title:Crystal habit modification of Cu(II) isonicotinate-N-oxide complexes using gel phase crystallisation
Authors:ID Ghosh, Dipankar, University of Iceland, Department of Chemistry (Author)
ID Ferfolja, Katja, University of Iceland, Department of Chemistry (Author)
ID Drabavičius, Žygimantas, University of Iceland, Department of Chemistry (Author)
ID Steed, Jonathan, Durham University, Department of Chemistry (Author)
ID Damodaran, Krishna Kumar, University of Iceland, Department of Chemistry (Author)
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Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:We report the crystallisation of three forms of copper(II) isonicotinate-N-oxide complex and their phase interconversion via solvent-mediated crystal to crystal transformation. The different forms of 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 tailored gelator showed crystal habit modification. Crystallisation in aqueous ethanol resulted in concomitant formation of blue (form-I) and green (form-II/IV) crystals while use of low molecular weight gel results in selective crystallization of the blue form-I under identical conditions. Comparison of 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.
Keywords:copper(II) complex, gel phase crystallisation, crystal habit modification, isonicotinate-N-oxide, X-ray diffraction
Year of publishing:2018
Number of pages:9
PID:20.500.12556/RUNG-4199-f1627af5-74bb-0fee-7921-7b120799d22e New window
COBISS.SI-ID:5266427 New window
DOI:10.1039/C8NJ05036H New window
Publication date in RUNG:08.11.2018
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Record is a part of a journal

Title:New Journal of Chemistry
Shortened title:New J. Chem.
Year of publishing:20


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:07.11.2018