Metal complexes of 3-thiophene carboxamides containing a pyridine ring
摘要:
Complexes of Zn(II), Cu(II) and Co(II) with either N-(2-methylpyridyl)-3-thienyl-alkyl-carboxamide or N-(2-pyridyl)-3-thienylalkylcarboxamide groups have been prepared and characterized. Crystal structures of ten new complexes are reported and discussed. N-(2-Methylpyridyl)-3-thienyl-alkyl-carboxamide exhibits both uni- and bidentate behavior. With all ligands, bidentate complexation is through the carbonyl oxygen and pyridine nitrogen atoms (O, N) and the amide nitrogen atom remains protonated. The electrochemical behavior and the infrared spectra of selected complexes are discussed. (C) 2007 Elsevier B.V. All rights reserved.
Synthesis and characterization of 3-thiophene carboxamides containing a pyridine ring: structure, electrochemistry, and complexation
作者:S. Jarrett Howell、Cynthia S. Day、Ronald E. Noftle
DOI:10.1016/j.ica.2005.05.008
日期:2005.9
A series of new thiophene amides containing a pyridine ring has been synthesized and characterized. Single crystal X-ray structures have been determined for four of the new substances which show two distinct patterns of hydrogen-bonding. The crystal structure of the copper (11) complex of one of the ligands shows that the bonding is 0,N in a square planar geometry with perchlorate ions in the axial positions. The new compounds do not undergo electropolymerization due to primary oxidation of the amide function but tuning of the amide group by introduction of an electron-withdrawing group on the pyridine ring allows electropolymerization to occur. (c) 2005 Elsevier B.V. All rights reserved.
Metal complexes of 3-thiophene carboxamides containing a pyridine ring
作者:S. Jarrett Howell、Cynthia S. Day、Ronald E. Noftle
DOI:10.1016/j.ica.2007.01.003
日期:2007.5
Complexes of Zn(II), Cu(II) and Co(II) with either N-(2-methylpyridyl)-3-thienyl-alkyl-carboxamide or N-(2-pyridyl)-3-thienylalkylcarboxamide groups have been prepared and characterized. Crystal structures of ten new complexes are reported and discussed. N-(2-Methylpyridyl)-3-thienyl-alkyl-carboxamide exhibits both uni- and bidentate behavior. With all ligands, bidentate complexation is through the carbonyl oxygen and pyridine nitrogen atoms (O, N) and the amide nitrogen atom remains protonated. The electrochemical behavior and the infrared spectra of selected complexes are discussed. (C) 2007 Elsevier B.V. All rights reserved.