Category: catalyst-palladium. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 5-Hydroxynicotinic acid, is researched, Molecular C6H5NO3, CAS is 27828-71-3, about Crystal structure of poly[bis(μ2-5-hydroxynicotinato-κ2 N:O 3)zinc]. Author is Wang, Wen-Bing; Xu, Shan-Shan; Chen, Hong-Ji.
The title coordination polymer, [Zn(C6H4NO3)2]n, was prepared under hydrothermal conditions by the reaction of zinc nitrate with 5-hydroxynicotinic acid in the presence of malonic acid. In the structure, the ZnII ion is coordinated by two carboxylate O atoms and two pyridine N atoms of four 5-hydroxynicotinate ligands in a distorted tetrahedral coordination environment. The μ2-bridging mode of each anion leads to the formation of a three-dimensional framework structure. Intermol. hydrogen bonds between the hydroxy groups of one anion and the non-coordinating carboxylate O atoms of neighboring anions consolidate the crystal packing.
In addition to the literature in the link below, there is a lot of literature about this compound(5-Hydroxynicotinic acid)Category: catalyst-palladium, illustrating the importance and wide applicability of this compound(27828-71-3).
Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method