Download Advances in Inorganic Chemistry, Vol. 52 by AG Sykes PDF

By AG Sykes

Advances in Inorganic Chemistry provides well timed and informative summaries of the present development in numerous topic parts inside of inorganic chemistry, starting from bioinorganic to sturdy nation. This acclaimed serial gains reports written via specialists within the zone and is an essential connection with complicated researchers. every one quantity of Advances in Inorganic Chemistry comprises an index, and every bankruptcy is absolutely referenced.

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Six oxides are found at the centers of the faces of the cube, and are tL5-bridging, while two oxides and six ethoxide oxygens are t~3bridging at the corners of the supercubane. The 12 benzoates are all 1,3-bridging between pairs of Mn sites on the faces of the supercubane, with two carboxylates per face. 33 cm -1. 2H20 and biphen in MeOH/THF followed by evaporation to dryness; (2) crystallization of the resulting red-brown material from THF/EtOH/CH2C12. The presence of ethoxide in the structure suggests that 49 forms during the crystallization step as that is the only stage where ethoxide is present.

The magnetic ground state of the cage is S -- ~5 owing to antiferromagnetic exchange between the Mn(II) centers. 58 V (vs. SCE). The first wave is a four-electron oxidation, while each of the following waves corresponds to a one-electron oxidation. The most oxidized cage therefore corresponds to one Mn(II) and eight Mn(III) centers; if this cage could be isolated, the magnetic properties might prove more interesting. The first decanuclear manganese cage reported was formed by aerial oxidation of a solution of Mn(CF3SO3)2 and N(CH2CH2NH2)3 (tren) in MeCN to give [Mn10014(tren)6] s+ (40) (107), shown in Fig.

C. susceptibility of this cage down to 2 K. Similar cages can be formed by reacting MnC12, Na(OMe), and Hdbm in MeOH, which gives [Na C Mn6(dbm)6(OMe)12] + (32) (94), as shown in Fig. 12, and [Mn C Mn6(dbm)6(OMe)12] (33) (95); the only difference in FIG. 12. The structure of [Na c Mn6(dbm)6(OMe)12]+ (94). ) HIGH-NUCLEARITY 3d-METAL COMPLEXES 33 the synthetic procedure is t h a t Na(BPh4) was added to the reaction, which gave 32. The structures consist of a metallocrown containing six Mn centers, each bound to one chelating dbm ligand, with each M n .

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