'Tipovi' aromatičnosti

Abstract

The field of aromaticity continues to be controversial. The central theme of this controversy is the definition of aromaticity itself. Today, the proliferation of 'types' of aromaticity goes far beyond the conventional confines and has been extended to include heterosystems, chelate metallacycles in which metalloaromaticity stabilizes coordinated chelate ligands, inorganic molecules, and transition metal oxides. A considerable number of prefixes joined to the term of aromaticity (anti-, non-, homo-, quasi-, pseudo-, etc.) and other 'types' of aromaticity suggested so far, such as classical aromaticity, magnetic aromaticity, Mõbius aromaticity, σ-aromaticity, local-aromaticity, 3D-aromaticity and spherical aromaticity pose additional problems. All these terms related to specific properties of the molecular system illustrate that aromaticity should take into consideration multiple structural, chemical and physical manifestations - it must be a multi-dimensional phenomenon. In the following we will briefly outline the various 'types' of aromaticity for the reader, to get insight into the complexity of the vexing and nebulous concept of aromaticity.U prethodnom broju smo već rekli da je još od Majerovog (Meyer) otkrića tiofena, koji je veoma sličan benzenu po fizičkim i hemijskim osobinama, postalo jasno da je pojam aromatičnosti mnogo širi od hemije benzena i njegovih jedinjenja. Danas postoji mnogo 'tipova' aromatičnosti, a samom pojmu aromatičnosti su dodati razni prefiksi (anti-, non-, homo-, pseudo-, kvazi-, super-, itd.). Svi ovi tipovi aromatičnosti ukazuju da se koncept aromatičnosti sastoji od mnogobrojnih strukturnih, hemijskih i fizičkih manifestacija, tj. da je aromatičnost jedan multidimenzioni fenomen. U ovom članku biće predstavljeni neki od najrasprostranjenijih tipova aromatičnosti

    Similar works