Search results for "HDI"
showing 10 items of 789 documents
Single-molecule magnet properties of a monometallic dysprosium pentalene complex
2018
The pentalene-ligated dysprosium complex [(η8-Pn†)Dy(Cp*)] (1Dy) (Pn† = [1,4-(iPr3Si)2C8H4]2−) and its magnetically dilute analogue are single-molecule magnets, with energy barriers of 245 cm−1. Whilst the [Cp*]− ligand in 1Dy provides a strong axial crystal field, the overall axiality of this system is attenuated by the unusual folded structure of the [Pn†]2− ligand. peerReviewed
Synthesis of isomorphous cobalt and nickel thiocyanate coordination compounds: Effect of metals on compound properties
2019
The reaction of 2-methylpiperazine with the thiocyanate ligand and two transition metals leads to the production of two new isomorphous [ML2SCN4] where L is the 2-methylpiperazine and [M =Co (1), and Ni (2)], presenting an octahedral configuration. These compounds were characterized by single crystal X-ray crystallography, TG-DTA analysis, as well as infrared and UV-Vis spectroscopy and TG-DTA. The magnetic and antibacterial properties were also determined. Through the link with N-H···S hydrogen bonds, a global 3D network was established. The studied compounds show the metal center’s impact leading to different properties. Indeed, the first compound shows high spin orbit coupling, whereas t…
Rare‐earth cyclobutadienyl sandwich complexes: Synthesis, structure and dynamic magnetic properties
2018
The potassium cyclobutadienyl [K2{η4‐C4(SiMe3)4}] (1) reacts with MCl3(THF)3.5 (M=Y, Dy) to give the first rare‐earth cyclobutadienyl complexes, that is, the complex anions [M{η4‐C4(SiMe3)4}{η4‐C4(SiMe3)3‐κ‐(CH2SiMe2}]2−, (2M), as their dipotassium salts. The tuck‐in alkyl ligand in 2M is thought to form through deprotonation of the “squarocene” complexes [M{η4‐C4(SiMe3)4}2]− by 1. Complex 2Dy is a single‐molecule magnet, but with prominent quantum tunneling. An anisotropy barrier of 323(22) cm−1 was determined for 2Dy in an applied field of 1 kOe, and magnetic hysteresis loops were observed up to 7 K. nonPeerReviewed
Asymmetric Ring Opening in Tetrazine‐based Ligand Affording a Tetranuclear Opto‐Magnetic Ytterbium Complex
2021
We report the formation of a tetranuclear lanthanide cluster, [Yb 4 (bpzch) 2 (fod) 10 ] ( 1 ), which occurs from a serendipitous ring opening of the functionalized tetrazine bridging ligand, bpztz (3,6‐dipyrazin‐2‐yl‐1,2,4,5‐tetrazine) upon reacting with Yb(fod) 3 (fod ‐ = 6,6,7,7,8,8,8‐heptafluoro‐2,2‐dimethyl‐3,5‐octandionate). Compound 1 was structurally elucidated via single‐crystal X‐ray crystallography and subsequently magnetically and spectroscopically characterized to analyse its magnetisation dynamics and its luminescence behaviour. Computational studies validate the observed M J energy levels attained by spectroscopy and provides a clearer picture of the slow relaxation of the ma…
Triplet-State Position and Crystal-Field Tuning in Opto‐Magnetic Lanthanide Complexes : Two Sides of the Same Coin
2019
Lanthanide complex‐based luminescence thermometry and single‐molecule magnetism are two effervescent research fields, owing to the great promise they hold from an application standpoint. The high thermal sensitivity achievable, their contactless nature, along with sub‐micrometric spatial resolution make these luminescent thermometers appealing for accurate temperature probing in miniaturized electronics. To that end, single‐molecule magnets (SMMs) are expected to revolutionize the field of spintronics, thanks to the improvements made in terms of their working temperature – now surpassing that of liquid nitrogen – and manipulation of their spin state. Hence, the combination of such opto‐magn…
A phantom enemy : metaphors of terrorism in mainstream and alternative news media
2006
Yhdistetty kestävyys- ja voimaharjoittelu : erityisesti harjoitusjärjestyksen vaikutus fyysiseen suorituskykyyn ja hormonipitoisuuksiin
2013
Johdanto. Monet kuntoilijat ja urheilijat käyttävät harjoittelussaan sekä kestävyys- että voimaharjoittelua. Tässä tutkimuksessa tutkittiin saman harjoituksen aikana toteutettujen kestävyys- ja voimaharjoitusosioiden järjestyksen vaikutusta maksimaaliseen hapenottokykyyn (VO2max:iin), maksimivoimaan sekä hormonien lepopitoisuuksiin. Menetelmät. Tähän tutkimukseen osallistui 42 aiemmin vähän harjoitellutta miestä. Tutkimuksessa loppuun asti mukana oli kuitenkin 30 koehenkilöä, jotka oli jaettu kahteen ryhmään. Ryhmä E+S (n=14, ikä 28,7 ± 5,5 vuotta) harjoitteli harjoituksissa ensin kestävyysosion (E) ja 10 minuutin tauon jälkeen voimaosion (S). Ryhmä S+E (n=16, ikä 29,8 ± 4,7 vuotta) harjoit…
Monenkeskinen yhteistyö ja minilateralismi käytännössä : tapauksena Somalian rannikon merirosvous
2022
Artikkelissa pohditaan monenkeskisyyden ilmenemistä minilateraalin yhteistyön kautta. Historiallisesti merirosvous on ollut ajoittain ja alueellisesti esiin nouseva ilmiö, joka ponnistaa paikallisista olosuhteista ja erityisesti heikosta hallinnosta maa-alueilla. Merirosvoukseen liittyvä kansainvälinen sopimusyhteistyö painottaa valtioiden suvereniteetin merkitystä omilla aluevesillään. Käytännössä merten turvallisuuden ymmärtäminen laaja-alaisena ilmiönä sekä merirosvouksen tehokas torjuminen on vaatinut ja vaatii myös jatkossa tiivistä valtioiden välistä yhteistyötä, jossa yksittäisen valtion toimintakykyä kompensoidaan yhteistyön keinoin. Artikkelissa kuvataan kansainvälisen yhteisön pyr…
Exploring the use of Vibroacoustic treatment for managing chronic pain and comorbid mood disorders : A mixed methods study
2019
Introduction: Chronic pain is a worldwide issue with common comorbidities of depression and anxiety, altogether inhibiting one’s personal relationships and capability to work. Music has long been used as a means to improve pain and mood, and the tactile application of music has shown promising and beneficial results for the treatment of both psychological and physical symptoms. VA treatment uses low frequency sinusoidal sound vibration (20-120Hz) supported by client-preferred music listening and therapeutic interaction. Methods: Using mixed methods, this study addresses the addition of a self-care VA intervention to maintain the effects of practitioner-led VA treatments and to increase pati…
The role of thought suppression and psychological inflexibility in older family caregivers’ psychological symptoms and quality of life
2021
Abstract Background Family caregivers often report high levels of distress, including depressive symptoms, anxiety, and reduced quality of life. There is a need for a greater understanding of the factors influencing, explaining, and maintaining psychological distress in family caregivers. Aim The aim of this study was to examine whether avoidance strategies such as thought suppression (WBSI), psychological inflexibility (AAQ-II), and, and caregiver experiential avoidance (EACQ) predict psychological distress (BDI-II, GAD-7) and quality of life (WHOQOL) in family caregivers aged 60 and over. We hypothesized that these avoidance strategies would explain elevated levels of psychological sympto…