Ruffled and planar conformations of the porphyrin ring in complexes and heme proteins: physical-chemistry properties and spectroscopic implications

Química Nova

Ribelatto, Julio C.¹  Imasato, Hidetake¹  Moreira, Leonardo M.¹  Universidade de São Paulo, São Carlos¹ 

关键词: porphyrin;    electronic configurations;    spectroscopies.;   

DOI  :  10.1590/S0100-40422004000600021

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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, (dxy)2(dxz,dyz )3 presents a planar conformation of the porphyrin ring and the less common electronic configuration (dxz,dyz)4(dxy )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】

Unknown