While a broad variety of iron-catalyzed cross-couplings involve the use of main-group organometallics R-[M] as nucleophiles, the role of the [M] cation in the coupling process is generally disregarded. However, several beneficial effects of [M] cations by themselves or involved in ionic salts used as additives have been observed in such procedures. At the molecular level, interaction of those [M] cations with on-cycle organoiron intermediates can proceed in several ways. Intermolecular interactions can be observed, and also the implication of [M] in the iron's first or second coordination sphere, by ambiphilic coordination of a [M]-X salt to an R-[Fe] bond. The use of [M] cations in the reaction medium is also a powerful strategy enabling control of the distribution of iron oxidation states within the coupling process.

Download full-text PDF

Source
http://dx.doi.org/10.1039/d2dt00871hDOI Listing

Publication Analysis

Top Keywords

[m] cations
12
coupling process
8
[m]
5
crucial multifaceted
4
multifaceted roles
4
roles main-group
4
cations
4
main-group cations
4
cations salts
4
salts iron-mediated
4

Similar Publications

Pyrazine (tppz) and 5-sulfosalicylic acid (HSSA) mixed-bridging Cd(II)-CP, {[Cd(HSSA)(tppz)]} (), is highly luminescent, and the emission has been quenched selectively by Al in the presence of other cations, with a limit of detection (LOD) of 43.9 nM (1.18 ppb).

View Article and Find Full Text PDF

Luminescent chiral metal-organic frameworks (CMOFs) are promising candidates for the enantioselective sensing of important chiral molecules. Herein, we report the synthesis and characterization of Zn and Cd CMOFs based on 1,1'-bi-2-naphthol (BINOL)-derived 3,3',6,6'-tetra(benzoic acids), H-OEt and H-OH. Four CMOFs, -OEt, -OH, -OEt, and -OH, based on these ligands were crystallographically characterized.

View Article and Find Full Text PDF

Five alkali metal manganese(III) fluorophosphates, KMn(POF)F (I), RbMn(POF)F (II), RbMn(POF)(PO)F (III), RbMn(POF)(PO)F (IV), and CsMn(POF)F (V), were successfully synthesized using a hydrothermal method. The monofluorophosphate anion (POF) groups work as "chemical scissors" to promote low-dimensional spin structures with the aid of alkali metal cations. I and II had an = 2 uniform chain structure formed by corner-sharing -MnOF octahedra.

View Article and Find Full Text PDF

In a systematic study, six pseudopolymorphic coordination polymers containing the ditopic 1,3-di(pyridin-4-yl)urea ligand (4bpu) constructed with d metal cations, possessing the formula {[M(4bpu)I]S} [(M = Zn, Cd and Hg), (S = MeOH or EtOH)], namely Zn-MeOH, Zn-EtOH, Cd-MeOH, Cd-EtOH, Hg- and Hg-EtOH were obtained. The title compounds were characterized by single-crystal X-ray diffraction analysis (SC-XRD), elemental analysis (CHN), FT-IR spectroscopy, thermogravimetric analysis (TGA), and powder X-ray diffraction (PXRD). The diffraction studies show that these compounds are isostructural 1D zig-zag chain coordination polymers which is also confirmed using XPac 2.

View Article and Find Full Text PDF

The remediation of wastewaters contaminated with dyes (discharged mainly from industry) is very important for preserving environmental quality and human health. In this study, a new composite chitosan (CS)-based adsorbent combined with activated carbon (AC) and curcumin (Cur) (abbreviated hereafter as CS/AC@Cur) in three different ratios (12.5%, 25%, and 50%) was synthesized for the removal of anionic [reactive black 5 (RB5)] and cationic [methylene blue (MB)] dyes in single-component or binary systems.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!