Manganese complexes cyclam

Irradiation of manganese azides derived from Mn(III) porphyrin, cyclam, and polyamide complexes represents one of the earliest methods reported for the preparation of nitrido manganese complexes (Eq. (40)) [50], Additional methods have become available for the synthesis of manganese nitrides that utilize ammonia in combination with oxidants such as Cl2, PhIO, NaCIO, and NBS (Eq. (41)) [51-53]. Employing these methods, the manganese nitrides incorporating porphyrin, phath-locyanine, cyclam, salen, and bidentate Schiff base complexes have been documen-... 

G. Yin, A. M. Danby, D. Kitko, J. D. Carter, W. M. Scheper, D. H. Busch, Olefin epoxidation by alkyl hydroperoxide with a novel cross-bridged cyclam manganese complex Demonstration of oxygenation by two distinct reactive intermediates. [Erratum to document cited in CA146 316400], Inorg. Chem. 46 (2007) 2173. 

Pseudooctahedral complexes of the N4 donor cyclam of type [Mn(cyclam)X2]Y, where X and Y are a range of monovalent anions, have been reported." The efficacy of a complex of this type (with X = Y = Cl) as an oxidation catalyst has been probed. In another study both manganese(II) and manganese(III) complexes of the tetraaza macrocycle (175) have been characterized and were shown to be of types [MnLCy O.SHCl and [MnL(N3)2]N3. The traw -octahedral structures of both species have been confirmed by X-ray diffraction studies. 

The characterization, redox properties, and pulse radiolysis study of manganese(III) complexes of type [MnLCy (where L = cyclam, meso-, and rac-5,7,7,12,14,14-hexamethylcyclam (tet a and tet b, respectively)) have been reported." An X-ray crystal structure of the meso-5,l,l, 2, A, A-hexamethyl-l,4,8,ll-tetraazacyclotetradecane complex shows that the coordination geometry of the tet a complex is close to octahedral with the macrocycle coordinated equatorially and the chlorides occupying irons axial sites. 

Mn Mn species [Mn(cyclam)(/.t-0)]2(C104)3. In this complex, the manganese ions are in fact crystallographically equivalent with each adopting a close to octahedral coordination geometry. 

An electrospray mass spectrometric study of the interaction of manganese(II) salts with the tetrathia analogue of cyclam showed the utility of this technique for detecting complex formation for both manganese and a series of other metal cations. 

A number of studies have been reported in which a metal atom catalyzes the oxidation of alkenes by PhIO or its derivatives. Three studies have employed iron or manganese model systems for cytochrome P-450 in the oxidation of alkenes. " " [Ru(III) (salen)(X)(Y)] catalyze the oxidation of alkenes by PhIO at room temperature.Similarly, ruthenium(II) complexes of bidentate phosphines may be utilized to promote the epoxidation of alkenes in the presence of iodosylbenzene and in low coordinating media. [Ni(cyclam)] promotes the oxidation of... 

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