Manganese complex compounds

Malononitrile s. 1,1-Dinitriles Malonyl chlorides s. a-Di-carboxylic acid chlorides Manganese(II) chloride 17, 68 Manganese complex compounds, ar. 16,813... 

Metalcarbonyls, organo- s. Acyl-cobaltcarbonyl complexes Metal complex compounds cobalt porphyrin complexes complex salts manganese complex compounds, ar. metalcarbonyl, organo-metallocenes... 

In general, manganese(III) compounds are coloured, and the complexes are octahedral in shape with four d electrons, the colour is attributable in part to d-d transitions. 

Various manganese complexes have also been investigated. In one study, six-coordinate compounds of type [MnXL]+ and seven-coordinate species of type [MnX2L] [where L = (293) and X is one of a range of... 

Let us now consider the effects of Eh-pH conditions on the speciation state and solubility of manganese in aqueous solutions. Manganese complexes have been carefully studied in the last decade, owing to the discovery on ocean ffoors of economically important metalliferous deposits (nodules and crusts) in which Mn compounds are dominant. 

The total synthesis of carbazomycin C (262) was achieved by executing similar reaction sequences as in the iron-mediated arylamine cyclization route described for the synthesis of carbazomycin B (261) (see Scheme 5.87). The electrophilic substitution of the arylamine 780b using the complex salt 779 afforded the iron complex 797, which was transformed to the corresponding acetate 798. Using very active manganese dioxide, compound 798 was cyclized to O-acetylcarbazomycin C (799). Finally, saponification of the ester afforded carbazomycin C (262) (four steps and 25% overall yield based on 779) (611) (Scheme 5.90). 

The coordination chemistry [8] and electrochemical properties [9-11] of manganese-containing compounds have been reviewed on a number of occasions. These collections contain primarily thermodynamic and (to a lesser extent) kinetic information on compounds of relatively simple composition. The objective in this chapter is to provide a descriptive summary of the electrochemical properties of a wide range of manganese compounds. There is generous coverage of coordination complexes, which seeks to illustrate relationships between structure and... 

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