Boron cluster anions BnHn2- (n = 10, 12) in reactions of iron(II) and iron(III) complexation with 2,2´-bipyridyl and 1,10-phenanthrolineстатья

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[1] Boron cluster anions bnhn2- (n = 10, 12) in reactions of iron(ii) and iron(iii) complexation with 2,2´-bipyridyl and 1,10-phenanthroline / V. V. Avdeeva, E. F. Safronova, A. V. Vologzhanina et al. // Z. anorg. allgem. Сhem. — 2014. — Vol. 640, no. 11. — P. 2149–2160. Complexation of FeII and FeIII with azaheterocyclic ligands L (L = phen or bipy) were studied in the presence and in the absence of boron cluster anions [BnHn]2– (n = 10, 12). The reactions were carried out in air at room temperature in organic solvents and/or water. In all the solvents used, well known [FeL3]An (An = 2Cl– or SO42–) ferrous complexes were formed from FeII salts. Composition of ferric complexes with L ligands depends on the nature of solvent: either dinuclear oxo-iron(III) chlorides [L2ClFeIII–O–FeIIIL2Cl]Cl2 or ferric ferrates(III) [FeIIIL2Cl2][FeIIICl4], or [FeIIIL2Cl2][FeIIICl4L] were isolated from FeIII salts. Introduction of the closo-borate anions to a Fe3+(or Fe2+)/L/solv. mixture stabilizes ferrous cationic complexes [FeL3]2+ in all the solvents used: only ferrous [FeL3][BnHn] (n = 10, 12) complexes were isolated from all the reaction mixtures in the presence of boron cluster anions. [ DOI ]

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