Pyrylium is a cation (positive ion) with formula C5H5O+, consisting of a six-membered ring of five carbon atoms, each with one hydrogen atom, and one positively charged oxygen atom. The bonds in the ring are conjugated as in benzene, giving it an aromatic character. In particular, because of the positive charge, the oxygen atom is trivalent.

Pyrylium | C5H5O+ | CID 9548819 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

ChemSpider record containing structure, synonyms, properties, vendors and database links for Pyrylium, 289-67-8, WVIICGIFSIBFOG-UHFFFAOYSA-N

2012年8月8日 · CID 57421613 | C5H5O | CID 57421613 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

CAS号查询致力于为化学行业用户免费提供C5H5O的CAS号、中文名称、英文名称相互转换服务,同时也包括C5H5O的性质、化学式、分子结构、密度、熔点、沸点等信息。

中文名:Pyrylium,英文名:Pyrylium,CAS:289-67-8,化学式:C5H5O,MSDS.

茂，即环戊二烯负离子 (C5H5-)，是环戊二烯失去一个质子后得到的物质，具有五中心六电子结构，具有芳香性。 环戊二烯是一个很活泼的化合物，表现出一切烯烃的性质，极易二聚，无芳香性。 它的饱和碳上的氢具有酸性，pKₐ≈16，酸性与水、醇相当。 环戊二烯很容易和苯基锂反应，很容易形成锂盐。 由于环戊二烯负离子中有6个π电子，按休克尔规则判断环戊二烯负离子应具有芳香性，这也就说明了为何环戊二烯中α位氢原子的酸性明显要比普通共轭烯烃的强得多。 环戊二 …

The simplest member of the class of pyryliums that is pyran with a protonated oxygen. This entity has been manually annotated by the ChEBI Team. Chemical Entities of Biological Interest …

ChemicalBook 致力于为化学行业用户提供Pyrylium的性质、化学式、分子式、比重、密度,同时也包括Pyrylium的沸点、熔点、MSDS、用途、作用、毒性、价格、生产厂家、用途、上游原料、下游产品等信息。

CID 14665958 | C5H5O | CID 14665958 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.