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Iron II

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Iron II refers to the oxidation state of iron in which it has lost two electrons, resulting in Fe²⁺ ions. This state is significant in various chemical and biological processes, including mineral formation, redox reactions, and the behavior of iron in environmental systems.
lightbulbAbout this topic
Iron II refers to the oxidation state of iron in which it has lost two electrons, resulting in Fe²⁺ ions. This state is significant in various chemical and biological processes, including mineral formation, redox reactions, and the behavior of iron in environmental systems.

Key research themes

1. How does iron deficiency influence eukaryotic translation and what molecular mechanisms mediate this effect?

Research investigates the role of iron as an essential cofactor for enzymes involved in translation in eukaryotic cells, especially how iron deficiency impairs translation initiation and regulation, focusing on yeast as a model organism. Understanding these mechanisms is vital for insights into cellular adaptation to iron deprivation and the broader implications for human health and disease.

Key finding: The paper demonstrates that iron is indispensable for multiple steps in eukaryotic translation, with sustained iron deficiency causing a global arrest at the initiation step mediated by the TORC1 and Gcn2/eIF2α pathways in... Read more

2. What are the advancements and challenges in leveraging iron for sustainable low-carbon energy technologies?

This research theme explores iron's applications in emerging energy technologies such as combustion fuels, iron-based batteries, and thermochemical cycles for hydrogen production, alongside sustainable methods for iron production and recycling. These investigations address iron's potential to contribute to decarbonization and energy storage, balancing economic feasibility and environmental impact.

by Andreea Oarga and 
1 more
Key finding: This work outlines that iron, due to its abundance, electrochemical versatility, and recyclability, is a promising candidate for low-carbon energy solutions including iron-based electrochemical energy storage and hydrogen... Read more

3. How has the innovation, adoption, and spread of iron metallurgy influenced socio-political and economic systems in the ancient Near East and Eurasian steppes?

Research focuses on archaeological, textual, and metallurgical evidence tracing iron's origins, spread, and socio-economic impacts in ancient societies. It distinguishes technological innovation phases from broader adoption and usage patterns, emphasizing the relationship between material properties, social context, and empire formation, with particular attention to the Mongolian Plateau and the Xiongnu Empire's role in advancing iron metallurgy.

Key finding: The synthesis supports Anatolia as the early center for extractive iron metallurgy around 2000 BC, but the widespread adoption occurred later between 1200-600 BC. It argues that iron's social, political, and economic... Read more
Key finding: This research uncovers the oldest iron smelting furnaces of the Xiongnu Empire, indicating a significant local smelting center existing at Baga Nariĭn Am. It documents a surge in iron metallurgy associated with the Xiongnu... Read more
Key finding: By identifying a Middle Assyrian cuneiform tablet referencing iron artifacts and metallurgy, this study provides philological evidence that iron was catalogued and utilized in the royal and administrative contexts by the 2nd... Read more

4. What molecular interactions govern the binding and speciation of Fe(II) and Fe(III) with organic matter and mineral interfaces, and how do these affect corrosion and environmental transport?

This theme encompasses studies on iron speciation at interfaces like iron-cement and its complexation with organic matter, especially humic substances, which influence iron corrosion products formation, retention, and mobilization. Such knowledge is crucial for applications ranging from concrete durability to contaminant transport modeling and biogeochemical cycling.

Key finding: The review consolidates current understanding that steel corrosion in cement releases Fe(II) and Fe(III) which form distinct corrosion products and interact with cement hydrates, controlling diffusion fronts and phase... Read more
Key finding: Through adsorption isotherms and modeling, the study evidences that As(III) forms ternary complexes with organic matter mediated by Fe(II) and Fe(III). It identifies a dominant mononuclear bidentate As(III) complex bound to... Read more
Key finding: This experimental and modeling work quantifies Fe(II) complexation with humic acids across a pH range, revealing dominant bidentate and tridentate binding modes and providing binding constants validated via linear free energy... Read more
Key finding: The study extends mechanistic geochemical modeling of Fe(II) binding to natural organic matter fractions and highlights the importance of these complexes for iron speciation and mobility in reducing environments. The... Read more

All papers in Iron II

The solid state structures of [Ni(1) pyridyl)-2,2 0 :6 0 ,2 00 -terpyridine) are presented and the structural variation observed for the {M(1) 2 } 2+ unit is discussed. Protonation of the pendant pyridine group in [Ru(1) 2 ] 2+ leads to... more
Keywords: Iron(II) / Photoswitching / Structural analysis / Photomagnetism / Spin crossover is the archetype of highly cooperative and low-dimensional spincrossover complexes, which exhibit low-spin (LS) to highspin (HS) light-induced... more
The paramagnetic coordination polymer [Fe(3phOHtrz) was obtained through the reaction of an iron(II) salt with the 3phOH-trz ligand and a [Pt(CN) 4 ] 2-anion. Its structure consists of two-dimensional {FePt(CN) 4 } layers linked by... more
The paramagnetic coordination polymer [Fe(3phOH‐trz){Pt(CN)4}]·2H2O [3phOH‐trz = 4‐(3‐hydroxyphenyl)‐1,2,4‐triazole] was obtained through the reaction of an iron(II) salt with the 3phOH‐trz ligand and a [Pt(CN)4]2– anion. Its structure... more
The synthesis, structural, magnetic, and Mo ¨ssbauer spectral properties of Fe[(C 6 H 5 )B(3-Mepz) 3 ] 2 (2, pz = pyrazolyl ring) are reported. The single crystal X-ray structural results indicate that at both 294 and 90 K Fe[(C 6 H 5... more
Recebido em 12/9/08; aceito em 8/4/09; publicado na web em 26/8/09 FeBr 2 has reacted with an equivalent of mnt 2-(mnt = cis-1,2-dicyanoethylene-1,2-dithiolate) and the α-diimine L (L = 1,10'-phenantroline, 2,2'-bipyridine) in THF... more
by David Ilan and 
1 more
This paper presents a cache of 31 astragali from the site of Tel Nagila, dating to the Middle Bronze Age. This is the earliest known cache of astragali from the Southern Levant outside tombs, and may be the forebearer of the later caches... more
In 1984 Eliezer Oren identified a series of structures found at 13th and 12th centuries BCE sites of southern Canaan, calling them Egyptian Governors' Residencies. He identified Bliss's City IV as a defining site. In 2000 Blakely... more
Monosegmented flow analysis (MSFA) has been used as a flow-batch system to produce a simple, robust, and mechanized titrator that enables true titrations to be performed without the use of standards. This paper also introduces the use of... more
The new potentially N-4-multidentate pyridyl-functionalized scorpionates 4-((tris-2,2,2-(pyrazol-1-ypethoxy)methyl)pyridine (TpmPy, (1)) and 4-((tris-2,2,2-(3-phenylpyrazol-1yl)ethoxy)methyl)pyridine (TpmPy(Ph), (2)) have been synthesized... more
While excavating at Tell el-Hesi in the spring of 1890, W. M. F. Petrie discovered the Early Bronze Age, which was further explored by F. J. Bliss over the next two years. Soon other large and important sites in Palestine were excavated... more
A transect across the eastern North Atlantic from 42jN, 23jW towards the European continental shelf and English Channel shows a gradient of increasing concentrations of dissolved iron (0.7-1.9 nM), iron-binding ligands and iron(II) across... more
This paper presents a cache of 31 astragali from the site of Tel Nagila, dating to the Middle Bronze Age. This is the earliest known cache of astragali from the Southern Levant outside tombs, and may be the forebearer of the later caches... more
This paper presents a cache of 31 astragali from the site of Tel Nagila, dating to the Middle Bronze Age. This is the earliest known cache of astragali from the Southern Levant outside tombs, and may be the forebearer of the later caches... more
A nanoencapsulation technique was applied to an oxygen-scavenging system, and thermal processing was investigated as an activator to trigger the oxygen-scavenging reaction. R-Tocopherol-loaded polycaprolactone (PCL) nanoparticles (NPs)... more
Linusson, V. 2022. Brown impasto at San Giovenale: Technological change and use of a fineware ceramic during the Orientalizing period (c. 730-580 BCE).
site Tell en-Naṣbeh and dating mostly to the Iron Age II. The vessels analyzed represent main Iron Age II types appearing at the site (bowls, kraters, cooking pots, jars, jugs), alongside a number of special groups from this and other... more
The complexation of Fe(II) with organic matter (OM) and especially with humic acids (HA) remains poorly characterized in the literature. In this study, batch experiments were conducted on a pH range varying from 1.95 to 9.90 to study... more
HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or... more
FeBr 2 has reacted with an equivalent of mnt 2-(mnt = cis-1,2-dicyanoethylene-1,2-dithiolate) and the α-diimine L (L = 1,10'-phenantroline, 2,2'-bipyridine) in THF solution, and followed by adding of t-butyl-isocyanide to give... more
FeBr 2 has reacted with an equivalent of mnt 2-(mnt = cis-1,2-dicyanoethylene-1,2-dithiolate) and the α-diimine L (L = 1,10'-phenantroline, 2,2'-bipyridine) in THF solution, and followed by adding of t-butyl-isocyanide to give... more
The recovery of a ceramic assemblage from a pit in Area T2 at Tel Azekah provided new data for the analysis of the Iron Age II. Following restoration of the vessels, it became clear that the assemblage did not conform to the known... more
The Biblical texts are replete with references to priests and Levites in ancient Israel and Judah, and are portrayed as playing a crucial and central role in these societies. While it is quite clear that priests and Levites did exist in... more
Dicarbonyl(D-cyclopentadienyl)iron tetrafluoroborates containing aromatic nitriles as ligands were synthesized. These and other (D-cyclopentadienyl)iron derivatives were used to obtain intercalation compounds with >-cyclodextrin.
Up until now, only a small number of studies have been dedicated to the binding processes of As(III) with organic matter (OM) via ionic Fe(III) bridges; none was interested in Fe (II). Complexation isotherms were carried out with As(III),... more
A transect across the eastern North Atlantic from 42jN, 23jW towards the European continental shelf and English Channel shows a gradient of increasing concentrations of dissolved iron (0.7-1.9 nM), iron-binding ligands and iron(II) across... more
The paper attempts to integrate the study of the manufacture, function and discard of chalices from three sites in Philistia in order to form a coherent 'life-cycle story' of this vessel type. The analyses include examination of the... more
Highlights  We prepared highly reproducible iron(II)-polygalacturonate hydrogels by external diffusion of Fe(II)  These hydrogels are heterogeneous at macroscopic scale but have a constant mesh size  Iron / polymer ratio is constant... more
FeBr 2 has reacted with an equivalent of mnt 2-(mnt = cis-1,2-dicyanoethylene-1,2-dithiolate) and the α-diimine L (L = 1,10'-phenantroline, 2,2'-bipyridine) in THF solution, and followed by adding of t-butyl-isocyanide to give... more
The paper attempts to integrate the study of the manufacture, function and discard of chalices from three sites in Philistia in order to form a coherent 'life-cycle story' of this vessel type. The analyses include examination of the... more
The publication of a Proto-Canaanite inscription from Eilat Mazar’s excavations at the Ophel has stimulated much interest in research but also controversy regarding its date. In this article, I discuss the emergence of neckless pithoi... more
ell e s-Í âf i /Gath is a large multiperiod archaeological site located in central Israel, on the border between the southern Coastal Plain (Philistia) and the Judaean Foothills (Shephelah), approximately halfway between Jerusalem and... more
ell e s-Í âf i /Gath is a large multiperiod archaeological site located in central Israel, on the border between the southern Coastal Plain (Philistia) and the Judaean Foothills (Shephelah), approximately halfway between Jerusalem and... more
In this paper we examine why common methodologies for determining ‘religious architecture’ do not account for the diverse and fluid ways in which religious behaviour can be expressed. We focus on religious architecture from the Iron Age... more
Based on recent studies on the Philistine culture deriving from the Tell es-Safi/Gath Archaeological Project, which indicate the complex and multi-faceted composition of the Philistine culture and its developmental trajectory, and in... more
Tell el-Fār a (South) in southwest Israel is well known from the excavations by FLINDERS PETRIE in 1928. Between 1998, the site was reinvestigated by a team of Ben-Gurion University directed by GUNNAR LEHMANN. The renewed excavations... more
by Jacob Wright and 
1 more
Essays from an international group of experts on the ancient Near East and the Hebrew Bible honor Oded Borowski's pioneering work in the archaeology and history of ancient Israel and Judah. Contributors approach the question of what we... more
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