A review of manganese-based molecular magnets and supramolecular architectures from phenolic oximes

Correction to: A Single-Molecule Magnet Tetranuclear [MnIII3MnIVO3Cl] Complex with Bis(diisopropylphosphinyl)imide Ligands

“…The average Mn 1 -O and Mn 2 -O lengths in 2Á0.25AcOH are 2.002(3) and 2.180(3) Å , respectively, which are consistent with the typical bond lengths of Mn III -O and Mn II -O, respectively [9]. The N-P bond lengths ranging from 1.649 (4)…”

“…As the smallest known units with the ability of storing up to one bit of information per molecule at cryogenic temperatures, single-molecule magnets (SMMs) have attracted intense research activity in past decades [1][2][3][4][5][6] [7,8], the polyoxometalate-based {Mn 2 IV Mn 6 III Mn 4 II } complexes [9], a family of cationic oxime-based Mn 6 III complexes [10], and the high nuclearity mixed-valence {Mn 32 } complex [11], which show SMM features at the very lowest temperatures, but examples of homometallic Mn-based SMMS with blocking temperatures above 1 K are still relatively unusual. Among them is a family of tetranuclear mixed-valence manganese complexes with general formula [Mn 4 O 3 X(OAc) 3 (dbm) 3 ] and the core [Mn 4 (l 3 -O) 3 (l 3 -X)] 6? , where X = Br -, Cl -, OAcand F -, OAcis the acetate ion and dbmis the anion of dibenzoylmethane [12].…”

Half‐Sandwich Iridium Complexes Bearing a Diprotic Glyoxime Ligand: Structural Diversity Induced by Reversible Deprotonation

“…1 H( 399.8 MHz) and 13 C{ 1 H} (100.5 Hz) NMR spectra were obtained on aJ EOL JNM-ECX-400 spectrometer. 1 (5):Amixture of 4 (171.0 mg, 0.317 mmol) and potassium carbonate (44.4 mg, 0.321 mmol) in methanol (5 mL) was stirred for 2h at room temperature. The resultant solution was evaporated to dryness and extracted with dichloromethane (3 mL 4).…”

“…The two adjacent heteroatoms therein allow the oxime to be buildingb locks for aw ide range of metal complexes featuring multiple coordination andh ydrogen bonds. [1] Since Tschugaeff described dimethylglyoxime as ag ravimetric reagent for nickel, [2] vicinal dioximes with the chelation ability and diprotic nature have received considerable attentioni nv ast research areas including analytical chemistry,s upramolecular chemistry, biochemistry,a nd biomedical applications. [3] The reactivities of their transition metal complexes,h owever,r emain surprisingly less explored with notable exceptions of those of cobaloxime derivatives [4] and some palladium complexes as precursors for Pd 0 clusterc atalysts.…”

Assessment of Double-Hybrid Density Functional Theory for Magnetic Exchange Coupling in Manganese Complexes

“…Oligonuclear complexes with magnetically interacting manganese ions have a long and rich history in chemistry, not only as synthetic analogues of essential biological clusters, such as the oxygen-evolving complex of photosystem II, but also in their own right, because of their magnetic, spectroscopic, and catalytic properties [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. From the perspective of quantum chemistry, a fundamental challenge in the description of the electronic structure of these systems is to model reliably the magnetic energy levels, that is, the energy levels associated with the magnetic "interaction" between the open-shell Mn ions [15].…”