Premium
Different Coordinative (N, N) and (N, O) Bidentate Behaviour of N‐2‐Pyridyl‐Sulfonamides. Electrochemical Synthesis and Characterization of Cadmium(II) Complexes
Author(s) -
Beloso Inmaculada,
Castro Jesús,
García—Vázquez José A.,
Pérez—Lourido Paulo,
Romero Jaime,
Sousa Antonio
Publication year - 2003
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.200390044
Subject(s) - denticity , chemistry , substituent , acetonitrile , electrochemistry , cadmium , sulfonamide , crystal structure , ligand (biochemistry) , ring (chemistry) , medicinal chemistry , crystallography , stereochemistry , inorganic chemistry , organic chemistry , receptor , electrode , biochemistry
Electrochemical oxidation of cadmium in an acetonitrile solution of N‐2‐pyridyl‐sulfonamides (HL) afforded cadmium coordination compounds of composition [CdL 2 ]. Heteroleptic complexes of composition [CdL 2 L′] (L′ = 2, 2′‐bipyridine or 1, 10‐phenanthroline) were obtained when the coligand L′ was added to the electrolytic phase. The crystal structures of several compounds have been determined by X‐ray diffraction. In all cases the cadmium atom is hexacoordinated, but the coordinative behaviour of the N‐2‐pyridyl‐sulfonamide ligand depends on the location of the substituents in the pyridyl ring. When the substituent is in position 3, the ligands act as N, O‐donors. In all other cases, the ligands act as N, N′‐bidentate systems.