New discrete and polymeric supramolecular architectures derived from dinuclear Co(II), Ni(II) and Cu(II) complexes of aryl-linked bis-beta-diketonato ligands and nitrogen bases: synthetic, structural and high pressure studies

Clegg, Jack K., Hayter, Michael J., Jolliffe, Katrina A., Lindoy, Leonard F., McMurtrie, John C., Meehan, George V., Neville, Suzanne M., Parsons, Simon, Tasker, Peter A., Turner, Peter and White, Fraser J. (2010) New discrete and polymeric supramolecular architectures derived from dinuclear Co(II), Ni(II) and Cu(II) complexes of aryl-linked bis-beta-diketonato ligands and nitrogen bases: synthetic, structural and high pressure studies. Dalton Transactions, 39 11: 2804-2815. doi:10.1039/b920199h

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Author Clegg, Jack K.
Hayter, Michael J.
Jolliffe, Katrina A.
Lindoy, Leonard F.
McMurtrie, John C.
Meehan, George V.
Neville, Suzanne M.
Parsons, Simon
Tasker, Peter A.
Turner, Peter
White, Fraser J.
Title New discrete and polymeric supramolecular architectures derived from dinuclear Co(II), Ni(II) and Cu(II) complexes of aryl-linked bis-beta-diketonato ligands and nitrogen bases: synthetic, structural and high pressure studies
Journal name Dalton Transactions   Check publisher's open access policy
ISSN 1477-9226
1477-9234
Publication date 2010-01-01
Sub-type Article (original research)
DOI 10.1039/b920199h
Open Access Status File (Publisher version)
Volume 39
Issue 11
Start page 2804
End page 2815
Total pages 12
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Formatted abstract
New examples of nitrogen base adducts of dinuclear Co(ii), Ni(ii) and Cu(ii) complexes of the doubly deprotonated forms of 1,3-aryl linked bis-β-diketones of type [RC(O)CH 2C(O)C 6H 4C(O)CH 2C(O)R] (L 1H 2) incorporating the mono- and difunctional amine bases pyridine (Py), 4-ethylpyridine (EtPy), piperidine (pipi), 1,4-piperazine (pip), N-methylmorpholine (mmorph), 1,4-dimethylpiperazine (dmpip) and N,N,N′,N′- tetramethylethylenediamine (tmen) have been synthesised by reaction of the previously reported [Cu 2(L 1) 2]·2.5THF (R = Me), [Cu 2(L 1) 2(THF) 2] (R = t-Bu), [Ni 2(L 1) 2(Py) 4] (R = t-Bu) and [Co 2(L 1) 2(Py) 4] (R = t-Bu) complexes with individual bases of the above type. Comparative X-ray structural studies involving all ten base adduct derivatives have been obtained and reveal a range of interesting discrete and polymeric molecular architectures. The respective products have the following stoichiometries: [Cu 2(L 1) 2(Py) 2]·Py (R = Me), [Cu 2(L 1) 2(EtPy) 2]·2EtPy (R = t-Bu), [Cu 2(L 1) 2(pipi) 2]·2pipi (R = t-Bu), [Cu 2(L 1) 2(mmorph) 2] (R = t-Bu), [Cu 2(L 1) 2(tmen) 2] (R = t-Bu) and {[Cu 2(L 1) 2(pip)]·pip·2THF} n, [Co 2(L 1) 2(tmen) 2] (R = t-Bu), [Ni 2(L 1) 2(Py) 4]·dmpip (R = t-Bu), [Ni 2(L 1) 2(pipi) 4]·pipi (R = t-Bu) and [Ni 2(L 1) 2(tmen) 2] (R = t-Bu). The effect of pressure on the X-ray structure of [Cu 2(L 1) 2(mmorph) 2] has been investigated. An increase in pressure from ambient to 9.1 kbar resulted in modest changes to the unit cell parameters as well as a corresponding decrease of 6.7 percent in the unit cell volume. While a small 'shearing' motion occurs between adjacent molecular units throughout the lattice, no existing bonds are broken or new bonds formed.
Keyword X Ray diffraction
L Serine II
Crystal structure
Building blocks
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes First published on the web 02 February 2010.

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