Related Experiment Video
Updated: Sep 11, 2025

Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
Published on: May 28, 2014
Coordination Polymers Bearing Angular 4,4'-Oxybis[N-(pyridin-3-ylmethyl)benzamide] and Isomeric Dicarboxylate
Yung-Hao Huang1, Yi-Ju Hsieh1, Yen-Hsin Chen1
1Department of Chemistry, Chung Yuan Christian University, Chung Li, Taoyuan City 320314, Taiwan.
Abstract:
Reactions of the angular 4,4'-oxybis[N-(pyridin-3-ylmethyl)benzamide] (L) with dicarboxylic acids and transition metal salts afforded non-entangled {[Cd(L)(1,3-BDC)(H2O)]∙2H2O}n (1,3-BDC = 1,3-benzenedicarboxylic acid), 1; {[Cd(L)(1,4-HBDC)(1,4-BDC)0.5]∙2H2O}n (1,4-BDC = 1,4-benzenedicarboxylic acid), 2; {[Cu2(L)2(1,3-BDC)2]∙1.5H2O}n, 3; {[Ni(L)(1,3-BDC)(H2O)]∙2H2O}n, 4; {[Zn(L)(1,3-BDC)]∙4H2O}n, 5; {[Zn(L)(1,4-BDC)]∙2H2O}n, 6; and [Cd3(L)2(1,4-BDC)3]n, 7, which have been structurally characterized by using single-crystal X-ray diffraction. Complexes 1-5 and 7 are 2D layers, giving (64·8·10)(6)-2,4L3, (42·82·102)(42·84)2(4)2, (4·5·6)(4·55·63·7)-3,5L66, (64·8·10)(6)-2,4L3, interdigitated (84·122)(8)2-2,4L2 and (36·46·53)-hxl topologies, respectively, and 6 is a 1D chain with the (43·62·8)(4)-2,4C3 topology. The factors that govern the structures of 1-7 are discussed and the thermal properties of 1-7 and the luminescent properties of complexes 1, 2, 5 and 6 are investigated. The stabilities of complexes 1 and 5 toward the detection of Fe3+ ions are also evaluated.
More Related Videos
Related Concept Videos
Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Coordination Compounds and Nomenclature
Valence Bond Theory
Stereoisomerism
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Coordination Number and Geometry
Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...

