Interaction of copper(II) with N-substituted bis(2-pyridylmethyl)amine derivatives New discrete and 1-D polymeric complex systems - The latter displaying ferromagnetic behaviour

Kim, Mihyun, Mora, Cindy, Lee, Young Hoon, Clegg, Jack K., Lindoy, Leonard F., Min, Kil Sik, Thuery, Pierre and Kim, Yang (2010) Interaction of copper(II) with N-substituted bis(2-pyridylmethyl)amine derivatives New discrete and 1-D polymeric complex systems - The latter displaying ferromagnetic behaviour. Inorganic Chemistry Communications, 13 10: 1148-1151. doi:10.1016/j.inoche.2010.06.033


Author Kim, Mihyun
Mora, Cindy
Lee, Young Hoon
Clegg, Jack K.
Lindoy, Leonard F.
Min, Kil Sik
Thuery, Pierre
Kim, Yang
Title Interaction of copper(II) with N-substituted bis(2-pyridylmethyl)amine derivatives New discrete and 1-D polymeric complex systems - The latter displaying ferromagnetic behaviour
Journal name Inorganic Chemistry Communications   Check publisher's open access policy
ISSN 1387-7003
1879-0259
Publication date 2010-10-01
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.inoche.2010.06.033
Open Access Status
Volume 13
Issue 10
Start page 1148
End page 1151
Total pages 4
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
Interaction of copper(II) with the N-substituted bis(2-pyridylmethyl)amine derivatives, (R)-N1,N1-bis(pyridine-2-ylmethyl)butane-1,2- diamine (L1) and (R)-2-(bis(pyridin-2-ylmethyl)amino)butan-1-ol (L2), has led to isolation of optically active [Cu(L 1)Cl]PF6 (1) and [Cu(L2)Cl]ClO4 (2), respectively. The X-ray structures of (1) and (2) show that the copper is bound to all four heteroatoms of the respective ligands as well as to a chlorine atom in a distorted square pyramidal arrangement in which the three nitrogens of L1 or L2 occupy three positions of each basal plane while the fourth position is occupied by the chloro ligand; apical sites in each case are filled by the amine donor from the NH2-substituted butane arm in L1 or the (protonated) alcohol oxygen of the 2-aminobutane-1-ol substituent in L2. To a first approximation the coordination geometry in 2 is distorted square pyramidal; however, the remaining (axial) site on each copper centre is involved in a long contact (2.96 Å) with a bound chloro ligand from an adjacent complex which connects individual complex units in a zigzag 1-D polymeric chain, so that the coordination geometry could also be seen as pseudo-octahedral. A temperature-dependent magnetic study revealed the presence of ferromagnetic exchange coupling between copper centres in the chain reflecting the orthogonal structure between the chloro-bridged copper(II) ions; in contrast, and as expected, the discrete complex 1 is magnetically dilute.
Keyword Copper(II)
Coordination polymer
X-ray structure
Optically active
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 2009-0075987
Institutional Status Unknown
Additional Notes Available online 1 July 2010.

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