Interaction of copper(II) with ditopic pyridyl-β-diketone ligands: dimeric, framework, and metallogel structures

Dudek, Melanie, Clegg, Jack K., Glasson, Christopher R. K., Kelly, Norman, Gloe, Kerstin, Gloe, Karsten, Kelling, Alexandra, Buschmann, Hans-Juergen, Jolliffe, Katrina A., Lindoy, Leonard F. and Meehan, George V. (2011) Interaction of copper(II) with ditopic pyridyl-β-diketone ligands: dimeric, framework, and metallogel structures. Crystal Growth and Design, 11 5: 1697-1704. doi:10.1021/cg101629w


Author Dudek, Melanie
Clegg, Jack K.
Glasson, Christopher R. K.
Kelly, Norman
Gloe, Kerstin
Gloe, Karsten
Kelling, Alexandra
Buschmann, Hans-Juergen
Jolliffe, Katrina A.
Lindoy, Leonard F.
Meehan, George V.
Title Interaction of copper(II) with ditopic pyridyl-β-diketone ligands: dimeric, framework, and metallogel structures
Journal name Crystal Growth and Design   Check publisher's open access policy
ISSN 1528-7483
1528-7505
Publication date 2011-05
Sub-type Article (original research)
DOI 10.1021/cg101629w
Volume 11
Issue 5
Start page 1697
End page 1704
Total pages 8
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
The interaction of Cu(II) with three β-diketone ligands of type R 1C(O)CH 2C(O)R 2 (where R 1 = 2-, 3-, or 4-pyridyl and R 2 = C 6H 5, respectively), HL 1-HL 3, along with the X-ray structures and the pK a values of each ligand, are reported. HL 1 yields a dimeric complex of type [Cu(L 1) 2] 2. In this structure, two deprotonated HL 1 ligands coordinate in a trans planar fashion around each Cu(II) center, one oxygen from each CuL 2 unit bridges to an axial site of the second complex unit such that both Cu (II) centers attain equivalent five-coordinate square pyramidal geometries. The two-substituted pyridyl groups in this complex do not coordinate, perhaps reflecting steric factors associated with the closeness of the pyridyl nitrogen to the attached (conjugated) β-diketonato backbone of each ligand. The remaining two Cu(II) species, derived from HL 2 and HL 3, are both coordination polymers of type [Cu(L) 2] n in which the terminal pyridine group of each ligand is intermolecularly linked to an adjacent copper center to generate the respective infinite structures. HL 2 was also demonstrated to form a fibrous metallogel when reacted with CuCl 2 in an acetonitrile/water mixture under defined conditions.
Keyword Coordination polymers
Organic frameworks
Crystal structure
Vibrational spectroscopy
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Publication Date (Web): March 10, 2011.

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemistry and Molecular Biosciences
 
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