Copper (II) Complexes Containing Dipyridyl Ligands Bearing Amide Groups: Syntheses, Structures and Ligand Conformations

• Main Authors: Chu Chen, Yu-Han, 朱陳郁涵
• Other Authors: Jhy-Der Chen
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/29820657747531964837

碩士 === 中原大學 === 化學研究所 === 99 === This thesis discusses the chemistry of copper(II) complexes containing dipyridyl ligands bearing amide groups. The reactions of the N-N’-di-(4-pyridyl)adipoamide ligand (L1) and N-N’-di-(4-pyridyl)suberoamide ligand (L2) with copper sulfate by solvothermal method afforded the two-dimensional polymeric nets [CuSO4(L1)(CH3OH)]∞, 1, and [CuSO4(L2)2(CH3OH)4]∞, 2, respectively. The reactions of the N-N’-di-(4-pyridyl)suberoamide ligand (L2) with copper nitrate at room temperature gave the one-dimensional polymeric chain [Cu(NO3)2(L2)(CH3OH)]∞, 3. All complexes have been structurally characterized by spectroscopic methods. In complex 1, a series of O-H---O and N-H---O hydrogen bonds were found between the two-dimensional polymeric nets, forming a three-dimensional supramolecular framework. In complex 2, the cooper(II) centers are linked through L2 ligands to give a one-dimensional infinite helical chains, which are further linked by sulfate anions to form two-dimensional polymeric nets. Three independent nets interpenetrate to each other to give a three-fold interpenetration. The adjacent nets are linked by N-H---O hydrogen bonds, to give a three-dimensional supramolecular framework. Complex 3 forms polymeric one-dimensional chains, which are linked to each other by N-H---O, O-H---O and C-H---O hydrogen bonds to form a three-dimensional supramolecular framework. Moreover, the ligands adopt different conformations in complexes. In complex 1, the L1 ligand adopts AGA trans conformation. The L2 ligand adopts AAGAA cis and AGGGA cis conformations in the complex 2 and those in 3 adopts AGAGA trans conformation.