Heteroleptic iron(iii) Schiff base spin crossover complexes: halogen substitution, solvent loss and crystallite size effects

Dalton Transactions : an International Journal of Inorganic Chemistry
Wasinee PhonsriKeith S Murray

Abstract

The influence of the halogen substituent on the qsal moiety of iron(iii) heteroleptic compounds with the formulae [Fe(qsal-X)(thsa)]·nMeCN, where qsal-X-= X-substituted quinolylsalicylaldimine; thsa2-= thiosemicarbazone-salicylaldiminate; X = F; n = 2.5, 1·2.5MeCN and X = Cl 2, Br 3 and I 4, n = 1 (labelled 2·MeCN, 3·MeCN and 4·MeCN, respectively) has been systematically investigated. Magnetic studies on solid samples show incomplete spin crossover in 1-3 which can be related to MeCN solvent loss. Complex 4·MeCN remains fully LS up to 360 K. Single crystals have been examined at variable temperatures for samples possessing different degrees of solvation. Intermolecular C-XH interactions are present for X = F, Cl and Br while a C-Iπ interaction is uniquely observed in 4·MeCN. These preferential interactions result in different supramolecular packings of the various halogen substituted compounds. However, as the LS stability increases from F to I, the ligand field strength is then also suggested to increase from F to I. Consequently, in this family, the electronic structure resulting from halogen variation is believed to influence the magnetic properties more than crystal packing effects. Mössbauer spectra, at variable temperatur...Continue Reading

References

Nov 22, 2001·Journal of the American Chemical Society·S HayamiO Sato
Dec 3, 2002·Science·Gregory J HalderJohn D Cashion
Jan 22, 2005·Acta Crystallographica. Section B, Structural Science·Mathieu MarchivieDaniel Chasseau
Oct 3, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Boujemaa MoubarakiKeith S Murray
Oct 21, 2010·Chemistry : a European Journal·Eddy W T YemeliPetra J van Koningsbruggen
Sep 23, 2011·Journal of the American Chemical Society·Yann GarciaLuc Piraux
Jan 22, 2013·Chemical Communications : Chem Comm·Alan FergusonPaul E Kruger
May 9, 2013·Chemistry : a European Journal·Rana A BilbeisiJonathan R Nitschke
Jun 8, 2013·Chemical Communications : Chem Comm·David J HardingShane G Telfer
Oct 28, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Wasinee PhonsriHarry Adams
Nov 27, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·David J HardingGuy N L Jameson
Apr 25, 2015·Chemical Society Reviews·Sally Brooker
Dec 8, 2015·Chemistry : a European Journal·Kazuyuki TakahashiKazunari Yoshizawa
Dec 10, 2015·Chemical Communications : Chem Comm·Wasinee PhonsriKeith S Murray
Apr 5, 2016·Inorganic Chemistry·Sidney E Creutz, Jonas C Peters
Jun 10, 2016·Inorganic Chemistry·Alejandra ArroyaveMichael Shatruk
Jun 22, 2016·Nature Chemistry·Osamu Sato
Oct 7, 2016·Inorganic Chemistry·Natasha F SciortinoSuzanne M Neville
Apr 4, 2017·Angewandte Chemie·Niklas StruchArne Lützen
Apr 21, 2016·Chemical Science·Reece G Miller, Sally Brooker

❮ Previous
Next ❯

Citations

Aug 23, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Theerapoom BoonprabDavid J Harding
Jun 6, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Nataliya G SpitsynaEduard B Yagubskii
Aug 31, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Sophie SchönfeldBirgit Weber
Jun 13, 2020·Magnetic Resonance in Chemistry : MRC·Tatyana A IvanovaMikhail A Cherosov
May 6, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Zhi-Jian OuyangWen Dong

❮ 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.