Dimeric nature of hemin hydroxides
Dimeric nature of hemin hydroxides
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DOI：
10.1021/ja01036a020
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发表时间：
1969-04
影响因子：
15
通讯作者：
I. Cohen
中科院分区：
文献类型：
--
作者：
I. Cohen
由四苯基卟啉和次卟啉IX二甲酯衍生的血色素在二氯甲烷中通过分子量测量发现是二聚体。红外研究表明，在这两个系统中的铁氧铁桥的存在。其中之一，µ--双（四苯基卟啉）铁（III），室温下的磁矩为1.74 BM/铁。以前的磁性研究结果的血红素被解释为由于高自旋羟基单体和低自旋氧代二聚体的混合物。讨论了氯化血红素和氯化血红素穆斯堡尔谱的差异。
The hematins derived from tetraphenylporphine and deuteroporphyrin IX dimethyl ester have been found to be dimeric in methylene chloride by molecular weightmeasurements. Infrared studies indicate the presence of iron-oxo-iron bridges in both systems. The room-temperature magneticmoment of one, the µ--bis (tetraphenylporphineaquoiron (III)), was found to be 1.74 BM per iron. The results of previous magnetic studies for hematins are interpreted as due to mixtures of high-spin hydroxo monomers and low-spin oxo dimers. The difference between the Mdssbauer spectra of hemins and hematins is discussed.