Advertisement

Topics

Unprecedented Five-coordinate Iron(IV) Imides Generate Divergent Spin States Based on Imide R-groups.

08:00 EDT 11th April 2019 | BioPortfolio

Summary of "Unprecedented Five-coordinate Iron(IV) Imides Generate Divergent Spin States Based on Imide R-groups."

Three five-coordinate iron(IV) imide complexes have been synthesized and characterized. These highly novel structures have disparate spin states on the iron as a function of the R-group attached to the imide with alkyls leading to low spin diamagnetic (S = 0) complexes and an aryl leading to an intermediate spin (S = 1) complex. The different spin states lead to significant differences in their bonding about the iron center as well as their spectroscopy. Mössbauer spectra confirm that all three imide complexes are in the iron(IV) oxidation state. The combination of diamagnetism and 15N labeling allowed for the first 15N NMR resonance recorded on an iron imide. Multi-reference calculations corroborate the experimental structural findings and suggest how the bonding is distinctly different on the imide ligand between the two spin states.

Affiliation

Journal Details

This article was published in the following journal.

Name: Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Pages:

Links

DeepDyve research library

PubMed Articles [5605 Associated PubMed Articles listed on BioPortfolio]

Spin State Variations of Iron(III) Complexes with Tetracarbene Macrocycles.

Starting from their six-coordinate iron(II) precursor complexes [L8RFe(MeCN)]2+, a series of iron(III) complexes of the known macrocyclic tetracarbene ligand L8H and its new octamethylated derivative ...

Structure and Properties of a Five-Coordinate Nickel(II) Porphyrin.

Axial coordination in nickel(II) porphyrins has been thoroughly investigated and is well understood. However, isolated five-coordinate nickel(II) porphyrins are still elusive after 50 years of intense...

Insights into the influence of ethylene group orientation on the iron(iii) spin state in the spin crossover complex Fe(Sal-trien).

The DFT calculations of the spin crossover complex [FeIII(Sal2-trien)]+ (1) with the following classification of conformers of 1 were performed. The study shows that rearrangements of ethylene group o...

Synthesis and Electronic Structure of Neutral Square-Planar High-Spin Iron(II) Complexes Supported by a Dianionic Pincer Ligand.

Two square-planar high-spin Fe complexes bearing a dianionic pyridine dipyrrolate pincer ligand and a diethyl ether or tetrahydrofuran ligand were synthesized and structurally characterized, and their...

Heteroleptic Four-Coordinate Tris(oxazolinyl)borato Iron(II) Compounds.

The reaction of FeBr and 1 equiv of thallium tris(4,4-dimethyl-2-oxazolinyl)phenylborate (TlTo) in THF provides ToFeBr (1), whereas FeBr and 2 equiv of TlTo react to give (To)Fe (2). Two ν bands at 1...

Clinical Trials [1469 Associated Clinical Trials listed on BioPortfolio]

A Novel Approach to Optimize Programmed Intermittent Epidural Bolus (PIEB) Delivery for Labour Analgesia

Programmed intermittent epidural bolus (PIEB) for labour analgesia allows an epidural pump to be programmed to deliver small amounts of the local anesthetic and opioid solution at regularl...

Quantification of Cerebral Blood Flow by Arterial Spin Labeling in Vasospasm in Subarachnoid Haemorrhage

A technique of MRI infusion -l'Arterial Spin Labeling-, non-invasive and non-irradiating, repeatable over time, appears promising in the field. This sequence allows for routine, generate p...

Interpretation of Health News Items Reporting Results of Randomized Controlled Trials With or Without Spin by French-speaking Patients

The main objective of this study is to compare the interpretation of health news items reporting results of randomized controlled trials (RCTs) with or without spin (i.e., distortion of re...

Interpretation of Health News Items Reporting Results of Randomized Controlled Trials With or Without Spin by English-speaking Patients

The main objective of this study is to compare the interpretation of health news items reporting results of randomized controlled trials (RCTs) with or without spin (i.e., distortion of re...

Interpretation of Health News Items Reporting Results of Randomized Controlled Trials With or Without Spin by English-speaking Population

The main objective of this study is to compare the interpretation of health news items reporting results of randomized controlled trials (RCTs) with or without spin (i.e., distortion of re...

Medical and Biotech [MESH] Definitions

A technique for detecting short-lived reactive FREE RADICALS in biological systems by providing a nitrone or nitrose compound for an addition reaction to occur which produces an ELECTRON SPIN RESONANCE SPECTROSCOPY-detectable aminoxyl radical. In spin trapping, the compound trapping the radical is called the spin trap and the addition product of the radical is identified as the spin adduct. (Free Rad Res Comm 1990;9(3-6):163)

Molecules which contain an atom or a group of atoms exhibiting an unpaired electron spin that can be detected by electron spin resonance spectroscopy and can be bonded to another molecule. (McGraw-Hill Dictionary of Chemical and Technical Terms, 4th ed)

Iron or iron compounds used in foods or as food. Dietary iron is important in oxygen transport and the synthesis of the iron-porphyrin proteins hemoglobin, myoglobin, cytochromes, and cytochrome oxidase. Insufficient amounts of dietary iron can lead to iron-deficiency anemia.

A multifunctional iron-sulfur protein that is both an iron regulatory protein and cytoplasmic form of aconitate hydratase. It binds to iron regulatory elements found on mRNAs involved in iron metabolism and regulates their translation. Its rate of degradation is increased in the presence of IRON.

A multifunctional iron-sulfur protein that is both an iron regulatory protein and cytoplasmic form of aconitate hydratase. It binds to iron regulatory elements found on mRNAs involved in iron metabolism and regulates their translation. Its RNA binding ability and its aconitate hydrolase activity are dependent upon availability of IRON.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article