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Boron Cluster Anions [B n H n ] 2– ( n = 10, 12) in Reactions of Iron(II) and Iron(III) Complexation with 2, 2′‐Bipyridyl and 1, 10‐Phenanthroline
Author(s) -
Avdeeva Varvara V.,
Vologzhanina Anna V.,
Goeva Lyudmila V.,
Malinina Elena A.,
Kuznetsov Nikolay T.
Publication year - 2014
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201400137
Subject(s) - chemistry , ferrous , cationic polymerization , boron , ferric , inorganic chemistry , solvent , cluster (spacecraft) , medicinal chemistry , crystallography , polymer chemistry , organic chemistry , computer science , programming language
Complexation of Fe II and Fe III with azaheterocyclic ligands L (L = phen or bipy) were studied in the presence and in the absence of boron cluster anions [B n H n ] 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 [FeL 3 ] An ( An = 2Cl – or SO 4 2– ) ferrous complexes were formed from Fe II salts. Composition of ferric complexes with L ligands depends on the nature of solvent: either dinuclear oxo‐iron(III) chlorides [L 2 ClFe III –O–Fe III L 2 Cl]Cl 2 or ferric ferrates(III) [Fe III L 2 Cl 2 ][Fe III Cl 4 ], or [Fe III L 2 Cl 2 ][Fe III Cl 4 L] were isolated from Fe III salts. Introduction of the closo ‐borate anions to a Fe 3+ (or Fe 2+ )/L/solv. mixture stabilizes ferrous cationic complexes [FeL 3 ] 2+ in all the solvents used: only ferrous [FeL 3 ][B n H n ] ( n = 10, 12) complexes were isolated from all the reaction mixtures in the presence of boron cluster anions.