Multiporphyrin coordination arrays based on complexation of magnesium(II) porphyrins with porphyrinylphosphine oxides

Atefi, F., McMurtrie, J. C. and Arnold, D. P. (2007) Multiporphyrin coordination arrays based on complexation of magnesium(II) porphyrins with porphyrinylphosphine oxides. Dalton Transactions, 21: 2163-2170. doi:10.1039/b703589f

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Author Atefi, F.
McMurtrie, J. C.
Arnold, D. P.
Title Multiporphyrin coordination arrays based on complexation of magnesium(II) porphyrins with porphyrinylphosphine oxides
Journal name Dalton Transactions   Check publisher's open access policy
ISSN 1477-9226
Publication date 2007
Year available 2007
Sub-type Article (original research)
DOI 10.1039/b703589f
Open Access Status File (Publisher version)
Issue 21
Start page 2163
End page 2170
Total pages 8
Place of publication Cambridge
Publisher Royal Society of Chemistry
Language eng
Abstract Di- and triporphyrin arrays consisting of 5,15-diphenylporphyrinatomagnesium(II) (MgDPP) coordinated to free- base and Ni( II) porphyrinyl mono- and bis-phosphine oxides, as well as the self-coordinating diphenyl[10,20-diphenylporphyrinatomagnesium(II)-5-yl]phosphine oxide [MgDPP(Ph2PO)], were synthesised in excellent yields and characterised by various spectroscopic techniques. Phosphine oxides stabilise Mg(II) coordination to porphyrins and the resulting complexes have convenient solubilities, while the Ni(II) complexes exhibit interesting intramolecular fluorescence quenching behaviour. The binding constant of MgDPP to triphenylphosphine oxide (5.3 +/- 0.1 x 10(5) M-1) and the very high self- association constant of [MgDPP(Ph2PO)] (5.5 +/- 0.5 x 10(8) M-1) demonstrate the strong affinity of phosphine oxides towards Mg(II) porphyrins. These complexes are the first strongly bound synthetic Mg(II) multiporphyrin complexes and could potentially mimic the "special pair" in the photosynthetic reaction centre.
Keyword Chemistry, Inorganic & Nuclear
Peripherally-metalated Porphyrins
Organopalladium Porphyrins
Spectroscopic Properties
Bacteriochlorophyll-a
Crystal-structures
Axial Ligands
Nmr-spectra
Dimer
Triphenylphosphine
Organization
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Journal Article Import (ISI/CVs)
 
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Created: Mon, 18 Feb 2008, 17:16:26 EST