Different coordinative (N, N) and (N, O) bidentate behaviour of N-2-pyridyl-sulfonamides. Electrochemical synthesis and characterization of cadmium(II) complexes

作者：Beloso I; Castro J^*; Garcia Vazquez JA; Perez Lourido P; Romero J; Sousa A

来源：Zeitschrift fur Anorganische und Allgemeine Chemie, 2003, 629(2): 275-284.

DOI：10.1002/zaac.200390044

• cadmium
• amide ligands
• electrochemical synthesis
• crystal structure

Electrochemical oxidation of cadmium in an acetonitrile solution of N-2-pyridyl-sulfonamides (HL) afforded cadmium coordination compounds of composition [CdL2]. Heteroleptic complexes of composition [CdL2L'] (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.

• 出版日期2003-1