Nitrogen based heterocyclic compounds are extensively used as corrosion inhibitors because of their ability to form strong coordination bonding with the metallic atoms. In the present review article anticorrosive effect of pyridine based compounds is surveyed. Generally, pyridine derivatives with electron withdrawing and electron donating substituents showed higher anticorrosion effect than that of the native pyridine. Pyridine derivatives containing polar substituents at 2nd and 6th positions form highly stable chelating complexes. The mono- (2nd position) and di- (2nd and 6th position) substituted pyridine derivatives preferably act as bidentate and tridentate ligands, respectively. Literature study showed that various reports are available on the anticorrosive behavior of pyridine based organic corrosion inhibitors. Generally, pyridine based N-heterocyclics act as mixed-type inhibitors and their adsorption obeyed the Langmuir adsorption isotherm. Computational based analyses show that pyridine based N-heterocyclics interact with metallic surface using donor-acceptor interaction and they acquire relatively flat orientation on the metallic surface. Different families of pyridine based N-heterocyclics are widely used as metallic corrosion inhibitors. Present review article describes the collection of major reports published on the anticorrosive effect of pyridine based N-heterocyclics.

氮基杂环化合物由于能够与金属原子形成牢固的配位键而被广泛用作腐蚀抑制剂。在本文中，对吡啶基化合物的防腐作用进行了研究。通常，具有吸电子和供电子取代基的吡啶衍生物显示出比天然吡啶更高的防腐作用。在第二和第六位含有极性取代基的吡啶衍生物形成高度稳定的螯合物。单-（第2位）和双-（第2和6位）取代的吡啶衍生物优选分别充当二齿和三齿配体。文献研究表明，有关基于吡啶的有机腐蚀抑制剂的防腐性能的报道很多。通常，吡啶基N-杂环为混合型抑制剂，其吸附服从Langmuir吸附等温线。基于计算的分析表明，吡啶基的N-杂环通过施主-受体相互作用与金属表面相互作用，并且它们在金属表面上获得相对平坦的取向。不同家族的基于吡啶的N-杂环被广泛用作金属腐蚀抑制剂。本篇综述文章介绍了有关基于吡啶的N-杂环类化合物的防腐作用的主要报告。基于计算的分析表明，吡啶基的N-杂环通过施主-受体相互作用与金属表面相互作用，并且它们在金属表面上获得相对平坦的取向。不同家族的基于吡啶的N-杂环被广泛用作金属腐蚀抑制剂。本篇综述文章介绍了有关基于吡啶的N-杂环类化合物的防腐作用的主要报告。基于计算的分析表明，吡啶基的N-杂环通过施主-受体相互作用与金属表面相互作用，并且它们在金属表面上获得相对平坦的取向。不同家族的基于吡啶的N-杂环被广泛用作金属腐蚀抑制剂。本篇综述文章介绍了有关基于吡啶的N-杂环类化合物的防腐作用的主要报告。