Manganese in Mn

Figure 1. (a) Ligands used for complexation of manganese in Mn Y zeolite... 

With a metal centre ready to donate one electron to the nitro ligand, such as manganese in. Mn generated by photolytic or thermal reaction o-f Mn2coordination leads to the -formation o-f a chelating monoanionic radical t232 ... 

The set of all intermediate steps is called the reaction pathway. A given reaction (involving the same reactants and products) may occur by a single pathway or by several parallel pathways. In the case of invertible reactions, the pathway followed in the reverse direction (e.g., the cathodic) may or may not coincide with that of the forward direction (in this example, the anodic). For instance, the relatively simple anodic oxidation of divalent manganese ions which in acidic solutions yields tetrava-lent manganese ions Mn +— Mn -l-2e , can follow these two pathways ... 

The Mn-S distances vary from 2.32 (1) to 2.35 (1) A, whereas in Mn(Et2rftc)3 the manganese atom is surrounded by three opposing pairs of sulfur atoms at distances of 2.38 (1), 2.43 (1) and 2.55 (1) A (47). Electrochemical studies (43) in acetone and dichloromethane showed one-electron transfer series ... 

Manganese in its various oxidation states, such as, Mn+7, Mn+4 and Mn+3, had been exploited in several studies. An electron transfer mechanism for the inter-molecular arylation of malonate esters in the presence of manganese (III) triacetate... 

Manganese in uncontaminated Israeli arid soils is predominantly in the easily reducible oxide fraction (35-40% of the total-HN03 Mn), followed by the carbonate fraction (18-25%), and the residual fraction (14-25%) (Han and Banin, 1996) (Table 5.4). Manganese in the organic fraction amounts to 9-12% and in the reducible oxide fraction to 5-11%. The exchangeable fraction of Mn in the soils is very low. In the sludge-amended calcareous soils of Southeast Spain, the residual and the carbonate bound Mn fractions are the major solid-phase (Moral et al., 2005). In comparison, the Mn in fine-textured soils from the southeastern United States is... 

---