了解一氧化氮 (NO) 与合成铁卟啉的结合模式对于全面了解含 NO 血红素的生物分子的作用至关重要,这些生物分子在几个重要的生物学过程中起着至关重要的作用。1 虽然对 NO 的生物学效应了解很多,但血红素组吸收和释放 NO 的详细机制仍有待阐明。NO 与血红蛋白 2,3 和金属卟啉 4,5 的光化学诱导损失和重组的动力学研究表明,光解后的重组在室温下是一个快速的多阶段过程。6-8
Abstract The behaviour of adsorbed nitrogen and the overall catalytic reaction between NO and H 2 on Rh foil were investigated in a pressure region around 10 −5 –10 −4 Pa and a temperature range between 400 and 1200 K, using the flash desorption technique and ultraviolet photoelectron spectroscopy. In a reducing condition, the NOH 2 reaction proceeded rapidly in the temperature range between 500 and 1000
Kinetics of the CCO + NO and CCO + NO<sub>2</sub> Reactions
作者:W. David Thweatt、Mark A. Erickson、John F. Hershberger
DOI:10.1021/jp0304125
日期:2004.1.1
The kinetics of the reaction of CCO radicals with NO and NO2 were studied using time-resolved infrared diode laser absorption spectroscopy. The rate constants were determined to be kCCO+NO = (5.36 ± 0.5) × 10-11 and kCCO+NO2 = (6.89 ± 0.5) × 10-11 cm3 molecule-1 s-1 at 298 K. These rate constants have virtually no temperature dependence over the range 298−573 K, with Arrhenius fits given by kCCO+NO
The reaction mechanism of the high temperature ammonia oxidation to nitric oxide over LaCoO3
作者:Gregory Biausque、Yves Schuurman
DOI:10.1016/j.jcat.2010.09.022
日期:2010.12.15
are promising catalysts for oxidationreactions. Good NO selectivity is reported for the oxidation of ammonia into nitricoxide over LaCoO3. More interestingly over this catalyst very little N2O is produced, which makes it a potential candidate for industrial ammonia oxidation. In order to further develop perovskite catalysts, an understanding of the reactionmechanism is necessary. Steady-state, TAP
Structural, Spectroscopic, and Computational Study of an Octahedral, Non-Heme {Fe−NO}<sup>6-8</sup> Series: [Fe(NO)(cyclam-ac)]<sup>2+/+/0</sup>
作者:Ricardo García Serres、Craig A. Grapperhaus、Eberhard Bothe、Eckhard Bill、Thomas Weyhermüller、Frank Neese、Karl Wieghardt
DOI:10.1021/ja030645+
日期:2004.4.28
complexes structures, energetics, IR parameters, and Mössbauer parameters as well as EPR parameters (g-values and hyperfine couplings) have been calculated using state-of-the art DFT methods which are compared to experiment. The results establish unequivocally that 3 is indeed the elusive [FeNO]8 species. Furthermore a detailed picture of the bonding in the low-spin non-heme ironnitrosyl series [FeNO]6,
低自旋 [FeIICl(cyclam-ac)] 与 CH3CN 中的 NO 反应生成八面体非血红素(亚硝基)铁络合物 [Fe(NO)(cyclam-ac)](PF6) (2),S = 1/2,可被(三(4-溴苯基)铵基)六氯锑酸盐单电子氧化成复合物 [Fe(NO)(cyclam-ac)](PF6)2 (1'),S = 0,或络合物 [Fe(NO)(cyclam-ac)]Cl(ClO4).H2O (1); (cyclam-ac)- 代表 1,4,8,11-四氮杂环十四烷-1-乙酸的五齿单阴离子。同理,在CH3CN溶液2中可以通过一个电子电化学或化学还原成中性络合物[Fe(NO)(cyclam-ac)]0(3),S=0。1-3代表[FeNO]的成员分别为6-8系列。这三种物质的电子结构已通过 EPR、UV-vis、Mössbauer 和 IR 光谱进行光谱阐明。1 和 2 的晶体结构已通过 X
Electronic Structure of Six-Coordinate Iron(III)−Porphyrin NO Adducts: The Elusive Iron(III)−NO(radical) State and Its Influence on the Properties of These Complexes
作者:V. K. K. Praneeth、Florian Paulat、Timothy C. Berto、Serena DeBeer George、Christian Näther、Corinne D. Sulok、Nicolai Lehnert
DOI:10.1021/ja801860u
日期:2008.11.19
further reveal that the thermodynamic weakness of the Fe-NO bond in ferric heme nitrosyls is an intrinsic feature that relates to the properties of the high-spin Fe(III)-NO(radical) (S = 2) state that appears at low energy and is dissociative with respect to the Fe-NO bond. Altogether, release of NO from a six-coordinate ferric heme nitrosyl requires the system to pass through at least three different