Article
Chemistry, Multidisciplinary
Batuhan Balci, Roark D. O'Neill, Eric M. Shepard, Adrien Pagnier, Alexander Marlott, Michael T. Mock, William E. Broderick, Joan B. Broderick
Summary: We investigated the maturation of [FeFe]-hydrogenase by using a synthetic complex [Fe-2(& mu;-SH)(2)(CN)(2)(CO)(4)](2-) and the components of glycine cleavage system together with HydF, without the presence of the maturases HydE and HydG. This semisynthetic and fully-defined maturation process offers new insights into the biosynthesis of H-cluster.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yu Zhang, Lizhi Tao, Toby J. Woods, R. David Britt, Thomas B. Rauchfuss
Summary: This research shows that the active HydA1 can be biosynthesized without the maturases HydG and HydE by using a synthetic cluster.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Biochemistry & Molecular Biology
Lintang Hizbullah, Ahibur Rahaman, Seyedeh Safavi, Matti Haukka, Derek A. Tocher, George C. Lisensky, Ebbe Nordlander
Summary: The reactions of [Fe2(CO)6(& mu;-sdt)] with different phosphine ligands were investigated, leading to the formation of various diphosphine-bridged products. Single crystal X-ray diffraction analysis of selected compounds revealed the arrangement of dithiolate bridges and dibasal positions of diphosphines. Protonation studies and redox chemistry of the complexes were also conducted.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Li-Cheng Song, Zhen-Qing Zhang, Bei-Bei Liu, Yin-Peng Wang, Shuai Chen
Summary: This study reports a new synthetic method that utilizes flexible pyridine ligands to prepare two novel [Fe]-H(2)ase models with biomimetic structures and enzyme-like activation functions.
CHEMICAL COMMUNICATIONS
(2022)
Review
Chemistry, Inorganic & Nuclear
Graeme Hogarth
Summary: When Ziegler and Korav accidentally prepared [Fe2(CO)6(& mu;-pdt)] in 1979, they couldn't have imagined its significance in understanding and replicating the function of a 4-billion-year-old enzyme class, [FeFe]-H2ases, and its potential for clean hydrogen production. This review highlights the progress from chance discovery to innovative application, bringing organometallic chemistry closer to the Origins of Life. The focus is on substitution chemistry that allows for the tuning of both steric and electronic properties, resulting in complexes that closely mimic the six different states of [FeFe]-H2ases and contribute to a viable catalytic cycle. However, the search for derivatives active in hydrogen oxidation, a key process in hydrogen fuel cells, remains challenging.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Spencer A. Kerns, Junhyeok Seo, Vincent M. Lynch, Jason Shearer, Sean T. Goralski, Eileen R. Sullivan, Michael J. Rose
Summary: The research focuses on the synthesis and reactivity of a model of [Fe]-hydrogenase derived from an anthracene-based scaffold. It demonstrates the maintenance of well-defined chemistry upon addition of exogenous base, and the formation of a dimeric motif containing a new Fe-C(methine) bond through deprotonation of the acyl(methylene) C-H bond with a phenolate base.This study provides mechanistic insight into the lack of functional biomimetic behavior in acyl(methylene)pyridine based mimics of [Fe]-hydrogenase, shedding light on the reasons behind this phenomenon.
Article
Crystallography
Ming-Gang Wu, Xu-Feng Liu
Summary: A C27H23Fe2O5PS2 crystal was discovered in this experiment. It belongs to the monoclinic system and P2(1)/c space group. The cell parameters were determined as a = 11.3170 angstrom, b = 16.1774 angstrom, c = 15.2170 angstrom, β = 92.933(1)degrees. The volume of the cell was 2782.3(2) angstrom(3) with 4 formula units. The structure quality indicators R-gt(F) = 0.0537 and wR(ref)(F (2)) = 0.1636 were obtained at the temperature of 296(2) K.
ZEITSCHRIFT FUR KRISTALLOGRAPHIE-NEW CRYSTAL STRUCTURES
(2023)
Article
Chemistry, Inorganic & Nuclear
Shuang Lu, Wen-Jing Tian, Ting-Ting Xu, Jun Yang, Qian-Li Li, Yu-Long Li
Summary: The research focused on the chemical properties of the diiron dithiolato hexacarbonyl complex and explored its potential as a catalyst for hydrogen evolution. By synthesizing new complexes, characterizing them, and conducting electrochemical experiments, the study confirmed the catalytic activity of the complexes for hydrogen evolution.
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
(2021)
Article
Environmental Sciences
Yao Huang, Shufeng Zhao, Hui Liu, Rong Chen, Lei Zhao, Shan Liu
Summary: This study demonstrates that the presence of siderite can enhance the oxidation rate of aqueous Fe2+ and the generation of .OH radicals, while alleviating the inactivation of MR-1. Experimental results including ROS scavenging and SEM observations confirm that siderite mitigates cell membrane disruption, possibly due to the accelerated oxidation process leading to reduced contact time between Fe2+ and bacterial cells.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Inorganic & Nuclear
Ao Li, Jun Yang, Shuang Lu, Ming-Sheng Gui, Peng Yan, Fan Gao, Li-Bo Du, Qian Yang, Yu-Long Li
Summary: This study describes the synthesis and characterization of a diiron azadithiolate complex and its corresponding phosphine-substituted derivatives, which were found to be active catalysts for H-2 production under electrochemical conditions.
Article
Chemistry, Physical
David G. Villarreal, Guodong Rao, Lizhi Tao, Liang Liu, Thomas B. Rauchfuss, R. David Britt
Summary: This study reports the direct observation of an organometallic Fe(II) complex in the hydrogenase active site through Mossbauer spectroscopy, providing insights into its structural characteristics. The results highlight the crucial role of HydG in converting high-spin Fe(II) ions to low-spin organometallic Fe(II) products.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Multidisciplinary
Zhaodong Xu, Yang Dai, Dong Hua, Hannian Gu, Ning Wang
Summary: A new method utilizing Fe-2(SO4)(3) was proposed to recover mixed cathode materials from spent lithium-ion batteries, reducing the amount of reducing agent or oxidant used significantly. The efficient leaching process achieved Ni, Co, Mn, and Li recovery by adjusting the ratio of trivalent iron, LiFePO4, and LiNi0.5Co0.2Mn0.3O2, ultimately providing a new solution to recycling used lithium-ion batteries.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Inorganic & Nuclear
Li-Cheng Song, Zhen-Qing Zhang, Bei-Bei Liu
Summary: In this study, a series of new structural and functional [Fe]-H(2)ase models were reported, showing enzyme-like H-2 activation and hydride transfer functions.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
A. Dominic Fortes, Stewart F. Parker
Summary: This study re-investigated the structure and vibrational spectroscopy of iron pentacarbonyl in the solid state. It was found that a displacive ferroelastic phase transition occurs at 105K, and the possible cause of this transition was proposed. Neutron vibrational spectroscopy allowed the observation of previously unobserved fundamentals.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Xue Bai, Yong Fan, Changmin Hou, Tianmi Tang, Jingqi Guan
Summary: Cobalt-iron oxyhydroxide demonstrates excellent OER activity with appropriate crystallization, the active sites being di-mu-oxo bridged Fe-Co. Partial crystallization accelerates the OER process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)