Iron complexes of new hydrophobic derivatives of tris(2-pyridylmethyl)amine: synthesis, characterization, and catalysis of alkane oxygenation by H2O2

Autor:	Alexandra M. Z. Slawin, David T. Richens, Gregorio Guisado-Barrios
Rok vydání:	2010
Předmět:	Alkane chemistry.chemical_classification Tris Cyclohexane Tris(2-pyridylmethyl)amine Medicinal chemistry Catalysis chemistry.chemical_compound chemistry Materials Chemistry Urea Organic chemistry Amine gas treating Physical and Theoretical Chemistry Trifluoromethanesulfonate
Zdroj:	Journal of Coordination Chemistry. 63:2642-2658
ISSN:	1029-0389 0095-8972
DOI:	10.1080/00958972.2010.506216
Popis:	Several new iron(II) triflate complexes of 6-py-substituted derivatives of tris(2-pyridylmethyl)amine (TPA); [Fe(3–6)(CH3CN) x ](CF3SO3)2 (3 = tris-(6-methoxymethyl-2-pyridylmethyl)amine, x = 0; 4 = tris-(6-octoxymethyl-2-pyridylmethyl)amine, x = 0; 5 = 6-(N′-hexylureido-2-pyridylmethyl)-bis(2-pyridylmethyl)amine, x = 1; and 6 = bis-(6-(N′-hexylureido)-2-pyridylmethyl)-2-pyridylmethylamine) have been synthesized to probe the introduction of a hydrophobic peralkyl chain (4–6) and hydrogen-bonding (from urea N–H) (4 and 5) on the selective catalysis of alkane oxygenation by H2O2 in CH3CN. For [Fe(6)](CF3SO3)2, hexadentate coordination of iron involving the two urea carbonyls was confirmed by X-ray structural analysis. Despite this, [Fe(6)](CF3SO3)2 exhibited the highest A/K ratio (3.3), yet seen for catalysis of H2O2 oxygenation of cyclohexane by an iron(II) complex of a bis(6-py)- or tris(6-py)-substituted TPA derivative. This has been tentatively attributed to a degree of O–O cleavage assistance within hi...
Databáze:	OpenAIRE
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