Synthesis, Structure and Properties of f-Block Complexes

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Organometallic Chemistry".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 4215

Special Issue Editor


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Guest Editor
Centre for Radiochemistry Research, The University of Manchester, Manchester M13 9PL, UK
Interests: actinides; crystal structure; lanthanides; ligands; metal-metal bonding; synthesis; f-elements; organometallics

Special Issue Information

Dear Colleagues,

In recent years, there has been a burgeoning interest in the chemistry of f-block complexes, from the lanthanides to the technically challenging to handle trans-uranics. The synthesis of these complexes is often difficult and a challenge in and of itself, and while the routine techniques such as SC-XRD, NMR, and IR studies allow identification of these complexes, the recent advances in further experimental techniques, such as SQUID, EPR, and XANES/XAFS, and theoretical techniques such as TD-DFT, QTAIM, and CASSCF, have allowed in depth investigations into the structure and bonding of these molecules. In this Special Issue, we wish to cover the most recent advances in these aspects of f-block chemistry, including the synthesis and structural investigations of these complexes.

Dr. Ashley Wooles
Guest Editor

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Keywords

  • f-block chemistry
  • synthesis of f-block complexes
  • lanthanide and actinide chemistry
  • magnetism of f-block complexes
  • computational chemistry
  • metal–ligand multiple bonding
  • f-block structure and bonding

Published Papers (2 papers)

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Research

11 pages, 2828 KiB  
Article
Structural and Photoluminescent Properties of a Novel Terbium Bis(thiocyanato)aurate, Tb[Au(SCN)2]3·6H2O
by Jared D. Taylor and Richard E. Sykora
Inorganics 2023, 11(11), 419; https://0-doi-org.brum.beds.ac.uk/10.3390/inorganics11110419 - 24 Oct 2023
Viewed by 1124
Abstract
The reaction of Tb3+ ions with KAu(SCN)2 results in the formation of the crystalline coordination compound Tb[Au(SCN)2]3·6H2O. Single-crystal X-ray diffraction has been employed to investigate the structural features of this compound. The crystallographic data are [...] Read more.
The reaction of Tb3+ ions with KAu(SCN)2 results in the formation of the crystalline coordination compound Tb[Au(SCN)2]3·6H2O. Single-crystal X-ray diffraction has been employed to investigate the structural features of this compound. The crystallographic data are as follows (Mo Kα, λ = 0.71073 Å): orthorhombic, Cmcm, a = 12.4907(9) Å, b = 8.5845(6) Å, c = 20.7498(8) Å, V = 3679.72(16) Å3, Z = 4, R1(I > 2(σ)) = 0.0232. This material represents the first known example of a lanthanide dithiocyanatoaurate compound. Au(SCN)2 anions bridge Tb3+ centers in a bidentate fashion to form the [Tb(H2O)4(Au(SCN)2)2+ 1D chains present in the structure. Trimeric Au units in the structure contain short aurophilic bonding interactions with distances of 3.1066(4) Å. The more common O–H‧‧‧O and O–H‧‧‧N H-bonding interactions in the structure are overshadowed by relatively rare O–H‧‧‧S interactions involving the bis(thiocyanato)gold(I) anions. Photoluminescence measurements illustrate that Tb[Au(SCN)2]3·6H2O displays strong Tb3+-based emission, but there is a lack of Au-based emission down to 85 K. Excitation spectra are recorded for the title compound and these measurements demonstrate the presence of a donor–acceptor process within the compound, leading to enhanced Tb3+-based emission. Full article
(This article belongs to the Special Issue Synthesis, Structure and Properties of f-Block Complexes)
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11 pages, 3724 KiB  
Article
A Tetranuclear Dysprosium Schiff Base Complex Showing Slow Relaxation of Magnetization
by Mamo Gebrezgiabher, Sören Schlittenhardt, Cyril Rajnák, Assefa Sergawie, Mario Ruben, Madhu Thomas and Roman Boča
Inorganics 2022, 10(5), 66; https://0-doi-org.brum.beds.ac.uk/10.3390/inorganics10050066 - 21 May 2022
Cited by 6 | Viewed by 2357
Abstract
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 [...] Read more.
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. Full article
(This article belongs to the Special Issue Synthesis, Structure and Properties of f-Block Complexes)
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