Ligand manganese complexes with

Tab. 1 Electrochemical properties of mononuclear manganese complexes with acyclic and other common ligands...

Tab. 2 Electrochemical data for manganese complexes with porphyrins, Schiff bases, and related macrocyclic ligands in nonaqueous media...

Mn(III). Structurally characterized higher valent manganese complexes with phenoxide-type ligation are limited to Mn(III) and Mn(IV) Schiff base complexes (128-135), Mn(III) and Mn(IV) catecholates (136-139), Mn(III) and Mn(IV) salicylates (140-142), and Mn(III) bi-phenoxides (143). However, of these ligands, only biphenoxide is similar electronically to tyrosine Mn(III) complexes of these ligands, in general, lack the intense phenoxide - metal charge transfer band centered at 435 nm. 

For the synthesis of the first manganese complex with a phosphanylalkylcyclopentadienyl ligand, the... 

Vinyl polymerization using metallocomplexes commonly proceeds by a radical pathway and rarely involves an ionic mechanism. For instance, metal chelates in combination with promoters (usually halogenated hydrocarbons) are known as initiators of homo- and copolymerization of vinylacetate. Similar polymer-bound systems are also known [3]. The polymerization mechanism is not well understood, but it is believed to be not exclusively radical or cationic (as polymerization proceeds in water). The macrochelate of Cu with a polymeric ether of acetoacetic acid effectively catalyzes acrylonitrile polymerization. Meanwhile, this monomer is used as an indicator for the radical mechanism of polymerization. Mixed-ligand manganese complexes bound to carboxylated (co)polymers have been used for emulsion polymerization of a series of vinyl monomers. Macromolecular complexes of Cu(N03)2 and Fe(N03)3 with diaminocellulose in combination with CCI4 are active in polymerization of MMA, etc. 

Figure 7.1 Early examples of manganese complexes with redox-active bis(imino)pyridine ligands.

In the first topic - Fine Chemistry - the methodologies used in the het-erogenisation of manganese complexes into solid supports are briefly described. The major part of the section focuses on examples of heterogeneous manganese complexes with salen- and porphyrin-type ligands used as catalysts in the epoxidation of alkenes their catalytic activity is discussed as a... 

Although manganese has a very rich coordination chemistiy - it coordinates to a great variety of ligands with several coordinating atoms (from mono-dentate to polydentate) - the manganese complexes with the greatest catalytic relevance in selective oxidation reactions are those with salen- and... 

Metal Complex. Complexation gas chromatography was first introduced by V. Schurig in 1980 (118) and employs transition metals (eg, nickel, cobalt, manganese or rhodium) complexed with chiral terpenoid ketoenolate ligands such as 3-ttifluoroacetyl-lR-camphorate (6),... 

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