5439829 Immobilization of biologically active molecules by changing the oxidation state of a chelated transition metal ion

The effect of cumene hydroperoxide, benzoin ethyl ether and dibenzoyl peroxide on the oxidation of cumene by dioxygen catalyzed by VO(II), Cr(III), Mn(II), Fe(III), Co(II), Co(III) and Cu(II) 2,4-pentanedionates was studied. The rate of the catalyzed oxidation of cumene by dioxgen can not only be increased but also decreased by the presence of radical initiators, whereas in the absence of the catalyst the oxidation rate is always increased by the radical initiators. Which effect takes actually place is determined by the kind and oxidation state of the transition metal ion catalyst as well as by the kind of the radical initiator.

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Oxidation of 1,2,3,4-tetrahydronaphthalene by dioxygen. Effect of the free radical initiators 1,2,3,4-tetrahydro-1-naphthylhydroperoxide and 2,2'-azobis(2-methylpropionitrile) on the reaction catalyzed by 2,4-pentanedionates of 3d transition metals

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19901015 ◽

1990 ◽

Vol 55 (4) ◽

pp. 1015-1021 ◽

Cited By ~ 2

Author(s):

Stanislav Luňák ◽

Marie Vašková ◽

Pavel Lederer

Keyword(s):

Free Radical ◽

Transition Metal ◽

Transition Metals ◽

Oxidation State ◽

Metal Ion ◽

Catalyst Activity ◽

Transition Metal Ion ◽

Free Radical Initiator ◽

Radical Initiators ◽

Catalyzed Oxidation

The effect of the free radical initiators 1,2,3,4-tetrahydro-1-naphthylhydroperoxide and 2,2'-azobis(2-methylpropionitrile) on the oxidation of 1,2,3,4-tetrahydronaphthalene (tetraline) by dioxygen catalyzed by Cr(III), Mn(III), Fe(III), Co(II), Co(III) and Cu(II) 2,4-pentanedionates (acac) has been investigated. It has been found that the addition of a free radical initiator can increase the rate of catalyzed oxidation or decrease it. Which effect will operate depends on the kind of the catalyzing transition metal ion and its oxidation state. The results obtained indicate that the above free radical initiators act on the catalyzed oxidation of tetraline by affecting the catalyst activity.

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Transition metal ion exchange in zeolites. Part 1.—Thermodynamics of exchange of hydrated Mn2+, Co2+, Ni2+, Cu2+ and Zn2+ ions in ammonium mordenite

Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases ◽

10.1039/f19767200661 ◽

1976 ◽

Vol 72 (0) ◽

pp. 661 ◽

Cited By ~ 57

Author(s):

Richard M. Barrer ◽

Rodney P. Townsend

Keyword(s):

Ion Exchange ◽

Transition Metal ◽

Metal Ion ◽

Transition Metal Ion ◽

Metal Ion Exchange

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Transition-metal ion-mediated morphological transformation of pyridine-based peptide nanostructures

New Journal of Chemistry ◽

10.1039/d0nj04260a ◽

2021 ◽

Vol 45 (1) ◽

pp. 153-161

Author(s):

Narendra Singh ◽

Ramesh Singh ◽

Swati Sharma ◽

Khushboo Kesharwani ◽

Khashti Ballabh Joshi ◽

...

Keyword(s):

Transition Metal ◽

Metal Ion ◽

Chemical Structure ◽

Morphological Transformation ◽

Transition Metal Ion

Pyridine-mediated constitutionally isomeric artificial metallopeptides possess remarkable advantages over the natural counterparts mainly due to their tailor-made chemical structure.

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