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Komplexe von Metallen der dritten Hauptgruppe mit [(en) 2 M III (OH) 2 ]‐Liganden (M = Cr, Co)
Author(s) -
Rominger Frank,
Müller Annette,
Thewalt Ulf
Publication year - 1994
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19941270502
Subject(s) - chemistry , ethylenediamine , denticity , aqueous solution , medicinal chemistry , heteronuclear molecule , stereochemistry , crystal structure , nuclear magnetic resonance spectroscopy , crystallography , inorganic chemistry
Complexes of Third Group Elements with [(en) 2 M III (OH) 2 ] Ligands (M = Cr, Co) Heteronuclear complexes are formed on reaction of cis‐ [(en) 2 ‐M III (OH)(H 2 O)] 2+ (M = Cr, Co; en = ethylenediamine) with A1 III , Ga III , In III , and T1 III in aqueous solution. The following salts with tetranuclear cations have been isolated: [A1{(OH) 2 ‐Cr(en) 2 } 3 ](S 2 O 6 ) 3 · 13 H 2 O ( 1 ), [A1{(OH) 2 Co(en) 2 } 3 ](S 2 O 6 ) 3 · 5 H 2 O ( 2 ), [Ga{(OH) 2 Co(en) 2 } 3 ](S 2 O 6 ) 3 · 5 H 2 O ( 3 ), [In{(OH) 2 ‐Cr(en) 2 } 3 ](S 2 O 6 ) 3 · 6 H 2 O ( 5 ), and [In{(OH) 2 Co(en) 2 } 3 ]‐(ClO 4 ) 4 Cl 2 · 4 H 2 O ( 6 ). Furthermore, the dinuclear neutral complexes [InCl 4 {(OH) 2 Cr(en) 2 }] ( 4 ) and [TlCl 4 {(OH) 2 ‐Cr(en) 2 }] · 0.5 H 2 O ( 7 ) are prepared. X‐ray analyses confirm that in all cases the [(en) 2 M III (OH) 2 ] groups act as bidentate ligands in the hydroxo‐bridged heterometallic complexes.