f-element sandwich complexes bearing a η5-plumbole ligand are reported. Quantum chemical calculations suggest that this ligand retains its aromaticity upon coordination. The Er complexes show SMM behavior including magnetic hysteresis.

A tetranuclear dysprosium Schiff base complex was isolated by reacting dysprosium chloride with 2-hydroxy-3-methoxybenzaldehyde and 2-(aminomethyl)pyridine in-situ under basic conditions. The isolated Dy(III) complex was characterized by elemental analyses, single crystal X-ray diffraction and molecular spectroscopy. The complex crystallizes in the triclinic space group P-1 with unit cell parameters of a = 10.2003 (4), b = 13.8602 (5), c = 14.9542 (6), α = 94.523 (3), β = 109.362 (4), and γ = 99.861 (3). The magnetic properties of 1 have been investigated by DC and AC susceptibility measurements. The DC measurements reveal weak exchange coupling of antiferromagnetic nature. In the AC measurement, the complex shows a slow relaxation of magnetization in the absence of an external magnetic field.

We report three structurally related single ion Dy compounds using the pentadentate ligand 2,6‐bis((E)‐1‐(2‐(pyridin‐2‐yl)‐hydrazineylidene)ethyl)pyridine (H2dapp) [Dy(H2dapp)(NO3)2]NO3 (1), [Dy(H2dapp)(OAc)2]Cl (2) and [Dy(H2dapp)(NO3)2]Cl0.92(NO3)0.08 (3). The (H2dapp) occupies a helical twisted pentagonal equatorial arrangement with two anionic ligands in the axial positions. Further influence on the electronic and magnetic structure is provided by a closely associated counterion interacting with the central N−H group of the (H2dapp). The slow relaxation of the magnetisation shows that the anionic acetates give the greatest slowing down of the magnetisation reversal. Further influence on the relaxation properties of compounds1 and 2 is the presence of short nitrate‐nitrate intermolecular ligand contact opening further lattice relaxation pathways.

A dinuclear dysprosium(III) complex [Dy2(NO3)3(L)3]•nCH3OH (n = 1.20; HL = (2-[(2-hydroxy-propylimino)methyl]phenol)) (1) was isolated when the dysprosium nitrate reacted with a solution of salicylaldehyde and 1-amino-2-propanol in basic medium under...

Amine groups are among the most effective systems for carbon dioxide capture. Reminiscent of the activation of nature’s most abundant enzyme RuBisCO, the treatment of amines with CO2 in the...