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Electrochemical Synthesis of M II Complexes with a Schiff Base containing an Amido Group. Crystal Structure of a Cobalt(II) Complex with a Reorganised Ligand
Author(s) -
Rodríguez M. Jesús,
Fernández M. Isabel,
GonzálezNoya Ana M.,
Maneiro Marcelino,
Pedrido Rosa,
Vázquez Miguel,
Donnadieu Bruno,
Bermejo Manuel R.
Publication year - 2005
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.200570034
Subject(s) - schiff base , chemistry , ligand (biochemistry) , electrochemistry , crystallography , crystal structure , octahedron , octahedral molecular geometry , cobalt , nitro , medicinal chemistry , inorganic chemistry , organic chemistry , electrode , biochemistry , alkyl , receptor
M(HL)(H 2 O) n complexes have been obtained by the electrochemical reaction of Fe, Co, Ni, Cu, Zn and Cd anodes with the potentially pentadentate and trianionic asymmetrical Schiff base 3‐aza‐ N ‐{2‐[1‐aza‐2‐(5‐nitro‐2‐hydroxylphenyl)‐vinyl]phenyl}‐4‐(5‐nitro‐2‐hydroxyphenyl)but‐3‐enamide (H 3 L), containing a hard amido donor atom. The complexes have been characterized by elemental analysis, mass spectrometry, IR and 1 H NMR spectroscopies, magnetic measurements and molar conductivities. Co(HL)(H 2 O) ( 2 ) has been found to rearrange in DMF solution into a crystallographically solved octahedral complex, CoL 1 (H 2 O) 2 ( 7 ) [where H 2 L 1 is the symmetrical Schiff base ligand N,N′ ‐(1,2‐phenylene)‐bis(5‐nitro‐3‐hydroxysalicylidenimine)]. A hydrolysis mechanism is discussed to explain this rearrangement.