Thermodynamically metastable thiocyanato coordination polymer that shows slow relaxations of the magnetization

Inorganic Chemistry
Julia WernerChristian Näther

Abstract

Reaction of cobalt thiocyanate with 4-acetylpyridine leads to the formation of [Co(NCS)2(4-acetylpyridine)2]n (3/I). In its crystal structure the Co cations are connected by pairs of μ-1,3-bridging thiocyanato ligands into dimers that are further connected into layers by single anionic ligands. DTA-TG measurements of Co(NCS)2(4-acetyl-pyridine)4 (1) led to the formation of 3/I. In contrast, when the hydrate Co(NCS)2(4-acetyl-pyridine)2(H2O)2 (2) is decomposed, a mixture of 3/I and a thermodynamically metastable form 3/II is obtained. Further investigations reveal that thermal annealing of 2 leads to the formation of 3/II, that contains only traces of the stable form 3/I. DSC and temperature dependent X-ray powder diffraction (XRPD) measurements prove that 3/II transforms into 3/I on heating. The crystal structure of 3/II was determined ab initio from XRPD data. In its crystal structure the Co cations are linked by pairs of bridging thiocyanato anions into a 1D coordination polymer, and thus, 3/II is an isomer of 3/I. Magnetic measurements disclose that the stable form 3/I only shows paramagnetism without any magnetic anomaly down to 2 K. In contrast, the metastable form 3/II shows ferromagnetic behavior. The phase transition in...Continue Reading

References

Feb 19, 2002·Chemical Reviews·Dario BragaGautam R. Desiraju
Aug 13, 2002·Chemical Communications : Chem Comm·Sarah A BarnettClaire Wilson
Oct 14, 2004·Chemical Society Reviews·Lee Brammer
Sep 29, 2007·Angewandte Chemie·Gautam R Desiraju
Oct 9, 2008·Journal of the American Chemical Society·Andrei V PaliiKim R Dunbar
Apr 23, 2009·Chemical Society Reviews·Mohamedally Kurmoo
Jun 13, 2009·Physical Review Letters·Claude CoulonHitoshi Miyasaka
Feb 13, 2010·Chemistry : a European Journal·Hitoshi MiyasakaRodolphe Clérac
Jun 29, 2010·Chemical Communications : Chem Comm·Mario Wriedt, Christian Näther
Oct 16, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Jan Boeckmann, Christian Näther
Oct 23, 2010·Chemical Communications : Chem Comm·Zuo-Xi LiXian-He Bu
Mar 11, 2011·Chemical Communications : Chem Comm·Chen-I YangKuang-Lieh Lu
May 28, 2011·Chemical Communications : Chem Comm·Jan Boeckmann, Christian Näther
Oct 28, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Feng LuoXue-Feng Feng
Feb 22, 2012·Chemistry : a European Journal·Hitoshi MiyasakaRodolphe Clérac
Mar 22, 2012·Chemistry : a European Journal·Jan BoeckmannChristian Näther
Apr 13, 2012·Journal of the American Chemical Society·Xiaowen FengJeffrey R Long
May 24, 2014·Chemical Communications : Chem Comm·Eugenia V PeresypkinaKira E Vostrikova

❮ Previous
Next ❯

Citations

Mar 21, 2017·Acta Crystallographica. Section E, Crystallographic Communications·Stefan SuckertChristian Näther
Apr 25, 2017·Acta Crystallographica. Section E, Crystallographic Communications·Stefan SuckertChristian Näther
Jan 14, 2017·Physical Chemistry Chemical Physics : PCCP·Michał RamsChristian Näther
Jun 29, 2017·Inorganic Chemistry·Stefan SuckertChristian Näther
Jul 17, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Julia WernerChristian Näther
Jul 12, 2017·Chemical Communications : Chem Comm·Hiroyoshi Ohtsu, Masaki Kawano
Nov 30, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Zhao-Xi WangMing-Xing Li
Nov 1, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Stefan SuckertChristian Näther
Aug 31, 2017·Physical Chemistry Chemical Physics : PCCP·Michał RamsChristian Näther
Feb 12, 2019·Chemical Communications : Chem Comm·Tristan NeumannChristian Näther
Jul 6, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Taqing ShiZhao-Xi Wang
Nov 8, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Hiroyasu TabeYusuke Yamada
Nov 9, 2019·Chemistry : a European Journal·Michał RamsChristian Näther
Aug 25, 2016·Acta Crystallographica. Section E, Crystallographic Communications·Tristan NeumannChristian Näther
Aug 19, 2016·Acta Crystallographica. Section E, Crystallographic Communications·Tristan NeumannChristian Näther
Aug 28, 2020·Acta Crystallographica. Section E, Crystallographic Communications·Aleksej JochimChristian Näther
Sep 18, 2020·Acta Crystallographica. Section E, Crystallographic Communications·Aleksej JochimChristian Näther
Oct 18, 2016·Acta Crystallographica. Section E, Crystallographic Communications·Stefan SuckertChristian Näther
Feb 26, 2019·Acta Crystallographica. Section E, Crystallographic Communications·Carsten Wellm, Christian Näther
Dec 7, 2016·Acta Crystallographica. Section E, Crystallographic Communications·Tristan NeumannChristian Näther
Dec 17, 2016·Acta Crystallographica. Section E, Crystallographic Communications·Stefan SuckertChristian Näther
Dec 24, 2018·Acta Crystallographica. Section E, Crystallographic Communications·Carsten Wellm, Christian Näther
Mar 24, 2016·Acta Crystallographica. Section E, Crystallographic Communications·Tristan NeumannChristian Näther
Oct 30, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Aleksej JochimChristian Näther
Nov 11, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Carsten WellmChristian Näther
Apr 28, 2021·Physical Chemistry Chemical Physics : PCCP·Magdalena CeglarskaMichał Rams

❮ 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.