Synthesis, structures and properties ofSilver (I) and Copper (II) Complexes Containing N-(2-pyrimidinyl)formamide Ligand

• Main Authors: Ying-Tzu Kuo, 郭盈孜
• Other Authors: Jyh-Der Chen
• Format: Others
• Language: en_US
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/08472961085549827688

碩士 === 中原大學 === 化學研究所 === 97 === This thesis discusses the chemistry of silver(I) and copper(II) complexes containing N-(2-pyrimidinyl) formamide (L). The reactions of ligand L with AgX (X ＝ ClO4－, BF4－, SO3CF3－, SbF6－) and Cu(BF4)2 • 6H2O, Cu(ClO4)2 • 6H2O, CuCl2 afforded the 1-D polymeric chains {[Ag(L)](ClO4)}∞, 1, {[Ag(L)](BF4)}∞, 2 and [Ag(L)(SO3CF3)]∞, 3, and the 0-D monomeric complexes [Ag(L)2](SbF6), 4, Cu(L)2(BF4)2, 5, Cu(L)2(ClO4)2, 6 and Cu(L)Cl2, 7. All the complexes have been characterized by EA, IR spectroscopic and TGA methods and structurally characterized by X-ray crystallography. The polymeric chains of 1 and 2 are linked by the anions through Ag---O and Ag---F, and π – π stacking interaction to form a 3-D supramolecular structure. The silver centers in complex 3 form the four coordinated, distorted trigonal pyramidal geometry, and each polymeric chains are linked through Ag---O and F---F interactions, which further extend into a 3-D supramolecular frameworks with channels. Complexes 4 shows a C-H---Ag intramolecular hydrogen bonding, and the molecules pack into a 3-D supramolecular framework through intermolecular Ag---F and Ag---O interactions and hydrogen bonds among mononuclear cationic units and anions. In complexes 5 and 6, a set of interactions involving two self-complementary double C-H---X and N-H---X (X = O or F) hydrogen bonds between molecules were found to link the molecules to form 2-D layers. The Cu centers in complex 7 form a distorted square planar geometry, and its molecules are linked through C-H---Cl and N-H---Cl hydrogen bonds to form a 1-D wave-like chain.