关于血红蛋白及相关双氧络合物中FeO₂的键合
On the bonding of FeO2 in hemoglobin and related dioxygen complexes.
作者信息
Reed C A, Cheung S K
出版信息
Proc Natl Acad Sci U S A. 1977 May;74(5):1780-4. doi: 10.1073/pnas.74.5.1780.
Abstract
The celebrated Fe(II)0(2) versus Fe(III) (02-) debate over the formal representation of the Fe02 moiety in hemoglobin can be resolved by consideration of the utility of each formalism. In the context of rationalizing the gross structural and electronic features of end-bound dioxygen, particularly in light of a new closely related chromium complex, the M(III)-(02-) formulation is both chemically reasonable and most useful. In conjunction with a qualitative molecular orbital overlap picture, the differing magnetic states of enc-bound M02 complexes and other geometrical features can be rationalized or predicted.
摘要
关于血红蛋白中FeO₂部分形式表示的著名的Fe(II)O₂与Fe(III)(O₂⁻)之争，可以通过考虑每种形式表示的实用性来解决。在合理化末端结合的双氧的总体结构和电子特征的背景下，特别是鉴于一种新的密切相关的铬配合物，M(III)-(O₂⁻)形式表示在化学上既合理又最有用。结合定性的分子轨道重叠图，可以合理化或预测末端结合的M-O₂配合物的不同磁态和其他几何特征。
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