Wheel-shaped Cu(20)-tungstophosphate [Cu(20)X(OH)(24)(H(2)O)(12)(P(8)W(48)O(184))](25-) ion (X = Cl, Br, I) and the role of the halide guest

Inorganic Chemistry
Sib Sankar MalUlrich Kortz

Abstract

We have synthesized the known [Cu(20)Cl(OH)(24)(H(2)O)(12)(P(8)W(48)O(184))](25-) (1) and report here its bromide and iodide analogues, [Cu(20)Br(OH)(24)(H(2)O)(12)(P(8)W(48)O(184))](25-) (2) and [Cu(20)I(OH)(24)(H(2)O)(12)(P(8)W(48)O(184))](25-) (3). These polyanions were characterized in the solid state by IR spectroscopy and single-crystal X-ray diffraction. Magnetic susceptibility and magnetization data over 1.8-300 K show that the Cu(2+) ions in 1-2 are antiferromagnetically coupled, leading to a diamagnetic ground state. The effective exchange coupling constant J(eff) was estimated as approximately -3 K for both 1 and 2. Electron paramagnetic resonance measurements were made on 1 and 2 over 5-295 K at microwave frequencies of 9.5, 34, and 220 GHz. The observed (weak) signals were characteristic of randomly distributed Cu(2+) ions only, with g values and hyperfine constants typical of the unpaired electron in a 3d(x(2)-y(2)) orbital of Cu(2+). No signals attributable to the copper-hydroxo cluster were detected, supporting the conclusions from the magnetization measurements. DFT calculations were performed as well to obtain additional information on the anionic guest inside the cavity created by the copper-hydroxo cage rela...Continue Reading

References

Sep 15, 1988·Physical Review A: General Physics·A D Becke
Jun 15, 1986·Physical Review. B, Condensed Matter·J P Perdew
Oct 27, 2004·Inorganic Chemistry·Xavier López, Josep M Poblet
May 12, 2005·Angewandte Chemie·Sib Sankar Mal, Ulrich Kortz
Feb 17, 2006·Dalton Transactions : an International Journal of Inorganic Chemistry·Xavier LópezJosep M Poblet
Jun 20, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Sib Sankar MalUlrich Kortz

❮ Previous
Next ❯

Citations

Jan 14, 2017·Chemistry : a European Journal·Aleksandar Kondinski, Kirill Yu Monakhov
Aug 15, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Vikram SinghJingping Wang
Oct 22, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·N V IzarovaP Kögerler
May 19, 2011·Angewandte Chemie·Bassem S BassilUlrich Kortz
Mar 29, 2013·Chemistry : a European Journal·Hani El MollPierre Mialane
Mar 5, 2010·Physical Chemistry Chemical Physics : PCCP·Coen de GraafJosep M Poblet
Dec 22, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Ying MaGanglin Xue
Jul 25, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Masooma IbrahimChristopher E Anson
Apr 19, 2011·Angewandte Chemie·Masooma IbrahimUlrich Kortz
Aug 18, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Zhu-Jun LiuEn-Bo Wang
Aug 15, 2012·Chemical Society Reviews·Olivier OmsPierre Mialane
Jun 20, 2017·Chemical Communications : Chem Comm·Caihong ZhanLeroy Cronin
Dec 15, 2011·Chemistry : a European Journal·Xin-Xiong LiJuan Modesto Clemente-Juan
Apr 8, 2021·Chemistry : a European Journal·Tuba IftikharPaul Kögerler
Feb 17, 2011·Inorganic Chemistry·Yanping ZhangGanglin Xue
Jun 27, 2019·Inorganic Chemistry·Xiaofeng YiPaul Kögerler
Jun 13, 2015·Inorganic Chemistry·Masooma IbrahimUlrich Kortz
May 20, 2014·Inorganic Chemistry·Rami Al-OweiniUlrich Kortz

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.