Conformações distorcida e planar do anel porfirínico em complexos e hemoproteínas: propriedades físico-químicas e implicações espectroscópicas

Química Nova

Leonardo M. Moreira¹  Julio C. Ribelatto¹  Hidetake Imasato¹ 

[1] ,Universidade de São Paulo Instituto de Química de São Carlos São Carlos SP

关键词: porphyrin;    electronic configurations;    spectroscopies;   

DOI  :  10.1590/S0100-40422004000600021

来源: SciELO

【 摘 要 】

The different conformations of porphyrin rings are strongly related with the electronic configurations of the metallic center in the ferriheme coordination compounds and heme proteins. The usual electronic configuration, (d xy)²(d xz,d yz )³ presents a planar conformation of the porphyrin ring and the less common electronic configuration (d xz,d yz)4(d xy )¹ occurs in the case of a strongly ruffled ring. These states are responsible for distinct chemical and spectroscopic properties of the porphyrin systems. The importance of the ring conformations, their characteristics, implications and applications are discussed.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License