Boron Cluster Anions [BnHn]2– (n = 10, 12) in Reactions of Iron(II) and Iron(III) Complexation with 2, 2′‐Bipyridyl and 1, 10‐Phenanthroline |
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| Authors: | Varvara V. Avdeeva Anna V. Vologzhanina Lyudmila V. Goeva Elena A. Malinina Nikolay T. Kuznetsov |
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| Affiliation: | 1. N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninskii Pr.Moscow, 119991, Russia;2. A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St.Moscow, 119991, Russia |
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| Abstract: | 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. |
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| Keywords: | Azaheterocyclic ligands Boron Cluster compounds Iron complexes |
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