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[FeFe]-Hydrogenase H-Cluster Mimics with Various −S(CH2)nS– Linker Lengths (n = 2–8): A Systematic Study
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2017-08-15 00:00:00 , DOI: 10.1021/acs.inorgchem.7b01398 Hassan Abul-Futouh 1 , Laith R. Almazahreh 1, 2 , Mohammad Kamal Harb 3 , Helmar Görls 1 , Mohammad El-khateeb 4 , Wolfgang Weigand 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2017-08-15 00:00:00 , DOI: 10.1021/acs.inorgchem.7b01398 Hassan Abul-Futouh 1 , Laith R. Almazahreh 1, 2 , Mohammad Kamal Harb 3 , Helmar Görls 1 , Mohammad El-khateeb 4 , Wolfgang Weigand 1
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The effect of the nature of the dithiolato ligand on the physical and electrochemical properties of synthetic H-cluster mimics of the [FeFe]-hydrogenase is still of significant concern. In this report we describe the cyclization of various alkanedithiols to afford cyclic disulfide, tetrasulfide, and hexasulfide compounds. The latter compounds were used as proligands for the synthesis of a series of [FeFe]-hydrogenase H-cluster mimics having the general formulas [Fe2(CO)6{μ-S(CH2)nS}] (n = 4–8), [Fe2(CO)6{μ-S(CH2)nS}]2 (n = 6–8), and [Fe2(CO)6{(μ-S(CH2)nS)2}] (n = 6–8). The resulting complexes were characterized by 1H and 13C{1H} NMR and IR spectroscopic techniques, mass spectrometry, and elemental analysis as well as X-ray analysis. The purpose of this research was to study the influence of the systematic increase of n from 2 to 7 on the redox potentials of the models and the catalytic ability in the presence of acetic acid (AcOH) by applying cyclic voltammetry.
中文翻译：
具有各种-S（CH 2）n S–连接子长度（n = 2–8）的[FeFe]-氢化酶H-簇模拟物：系统研究
二硫代lato配体的性质对[FeFe]-加氢酶的合成H-簇模拟物的物理和电化学性质的影响仍然是令人关注的问题。在本报告中，我们描述了各种链烷二硫醇的环化反应，得到环状二硫键，四硫键和六硫键化合物。后面的化合物用作配体，用于合成一系列具有通式[Fe 2（CO）6 {μ-S（CH 2）n S}] [ n = 4 –8），[Fe 2（CO）6 {μ-S（CH 2）n S}] 2（n = 6–8）和[Fe 2（CO）6 {（μ-S（CH 2）n S）2 }]（n = 6-8）。通过1 H和13 C { 1 H} NMR和IR光谱技术，质谱分析，元素分析以及X射线分析对所得复合物进行表征。本研究的目的是通过循环伏安法研究n从2到7的系统增加对模型氧化还原电势和在乙酸（AcOH）存在下的催化能力的影响。
更新日期：2017-08-15
中文翻译：
具有各种-S（CH 2）n S–连接子长度（n = 2–8）的[FeFe]-氢化酶H-簇模拟物：系统研究
二硫代lato配体的性质对[FeFe]-加氢酶的合成H-簇模拟物的物理和电化学性质的影响仍然是令人关注的问题。在本报告中，我们描述了各种链烷二硫醇的环化反应，得到环状二硫键，四硫键和六硫键化合物。后面的化合物用作配体，用于合成一系列具有通式[Fe 2（CO）6 {μ-S（CH 2）n S}] [ n = 4 –8），[Fe 2（CO）6 {μ-S（CH 2）n S}] 2（n = 6–8）和[Fe 2（CO）6 {（μ-S（CH 2）n S）2 }]（n = 6-8）。通过1 H和13 C { 1 H} NMR和IR光谱技术，质谱分析，元素分析以及X射线分析对所得复合物进行表征。本研究的目的是通过循环伏安法研究n从2到7的系统增加对模型氧化还原电势和在乙酸（AcOH）存在下的催化能力的影响。
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