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

Quimica nova

Ribelatto, Julio C.¹  Imasato, Hidetake¹  Moreira, Leonardo M.¹ 

[1] Universidade de São Paulo, São Carlos

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 conformationsof porphyrin rings are strongly related with the electronic configurations ofthe 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 lesscommon electronic configuration (dxz,dyz)4(dxy)1 occurs in the case of a strongly ruffled ring. These states areresponsible for distinct chemical and spectroscopic properties of the porphyrinsystems. The importance of the ring conformations, their characteristics, implicationsand applications are discussed.

【 授权许可】

CC BY