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This article in SSSAJ

  1. Vol. 49 No. 5, p. 1169-1172
     
    Received: Feb 11, 1983
    Published: Sept, 1985


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doi:10.2136/sssaj1985.03615995004900050019x

Electron Paramagnetic Resonance of Manganese (II) in Newly Humified Clover Leaves1

  1. H. A. Sonbol and
  2. M. Baverez2

Abstract

Abstract

Clover leaves (Trifolium alexandrium L.) were humified by incubation at 30°C for 60 d. Electron paramagnetic resonance (EPR) and infrared (IR) spectra were recorded during that time. The EPR spectra of the leaves exhibited a hyperfine structure characteristic of Mn(II). The theory of the EPR experiment was discussed and the parameters of the spin Hamiltonian were determined. The A and D values of −265 and 150 Mc s−1 respectively, indicated that Mn(II) was coordinated by six oxygen-containing functional group ligands in an appreciably distorted octahedron environment.

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