In search for molecules displaying ferromagnetic exchange: multiple-decker Ni12 and Ni16 complexes from the use of pyridine-2-amidoxime

The use of pyridine-2-amidoxime (pyaoxH2) in Ni chemistry has provided access to a dodecanuclear complex and a hexadecanuclear Ni cluster, namely [Ni12(pyaox)6(pyaoxH)6(MeOH)2Cl2]Cl4·5MeOH (1·5MeOH) and [Ni16(pyaox)8(pyaoxH)8(MeOH)4](SO4)4·10H2O·26MeOH (2·10H2O·26MeOH). Complex 1·5MeOH was isolated by the reaction of NiCl2·6H2O, pyaoxH2 and NaOMe in a 1 : 1 : 2 molar ratio in MeOH in 60% yield. Treatment of NiSO4·6H2O with pyaoxH2 and NEt3 in a 1 : 1 : 2 molar ratio in MeOH afforded 2·10H2O·26MeOH in good yield (65%). The two compounds display a multi-decker configuration based on stacked Ni4 layers, {Ni4(pyaox)2(pyaoxH)2}2+x (x = 3, 1·5MeOH; x = 4, 2·10H2O·26MeOH); each deck consists of two square planar and two octahedral NiII centres. The number of decks observed in 1·5MeOH and 2·10H2O·26MeOH depends on the nature of the inorganic anion that is present in the reaction system, which provides elements of synthetic control towards new high nuclearity NiII species. 2·10H2O·26MeOH is the first structurally characterized complex of any metal displaying a quadruple-decker configuration, being also the highest nuclearity metal cluster bearing pyaoxH2 and the highest nuclearity NiII cluster with any type of 2-pyridyl oxime. Each cluster cation displays ferromagnetic exchange between the octahedral NiII ions resulting in a spin ground state of S = 6 for 1 and S = 8 for 2. Magnetothermal studies have been performed and discussed for both clusters.CP and CE thank the School of Chemistry, NUI Galway, for the financial support. RI thanks the Royal Society of Edinburgh and ME thanks Spanish MINECO (MAT2015-68204-R) for funding. LCS acknowledges the financial support by FEDER (Fundo Europeu de Desenvolvimento Regional) through PT2020, by FCT (Fundação para a Ciência e a Tecnologia) for the research centre REQUIMTE/LAQV (UID/QUI/50006/2013) and for the grant SFRH/BPD/111899/2015.Peer Reviewe

Cancer Conversations Among Children With Cancer

 Self-disclosure is a psychosocial process in which children carefully decide who, what, and how they tell others about their illness. Unfortunately, there is very little known about how children disclose their cancer diagnosis to their peers. For this reason, this study utilized a qualitative secondary analysis approach to investigate whether and how children disclose their illness to peers at camp. A thematic analysis was undertaken to analyze 21 interviews completed by children who experienced cancer and were from two summer residential camps in Ontario. This resulted in four themes including talking about cancer, thinking about cancer, attitude towards illness, and social environment and relationships. The findings affirm that illness disclosure is extremely complex and has several contributing factors. Further research in the area of disclosure among children with cancer is encouraged, as it can assist in the development of support and interventions for children engaging in numerous types of disclosure.  </p

A Systematic Approach to the Development and Synthesis of Multi-nuclear Complexes Possessing Novel Magnetic Behaviour

The chapters in this thesis are sequentially arranged In increasing nuclearity and atomic configuration (i.e. linear Mn3, triangular Mn3, Mn6, Mn7, Mn9, Mn18, and Mn23). In order to synthesize these molecules tuneable, multi-dentate oximate ligands were employed. These compounds were characterized exclusively by X-ray crystallography and their magnetic properties by SQUID measurements. The latter permits us to determine the spin ground state and the magnetic anisotropy and hence ultimately establish whether the molecules exhibit the single-molecule magnet (SMM) behaviour. In addition to the atomic structure, a magneto-structural correlation was conducted for the 21 manganese clusters. In an attempt to achieve high energy barrier SMMs two essential requirements; large spin ground state and uniaxial magnetic anisotropy were manipulated. Each chapter was discussed in regards to achieving SMM behaviour by tweaking one or both requirements. There are two basic magnetic repeating units which lay the foundation for large Mn aggregates; linear Mn 3 and triangular Mn3. The former can be used to produce linear 1-D chains of Mn3 polymer. The latter can be used to synthesize Mn6, Mn7, Mn9, Mn18 and Mn 23 clusters.* *Please refer to dissertation for diagrams

A rare ligand bridged ferromagnetically coupled MnIV3 complex with a ground spin state of S=9/2

An exclusively chelating ligand bridged high-valent [MnIV3] complex has been synthesized, in which all MnIV ions are ferromagnetically-coupled to exhibit an ST=9/2 spin ground state

Listening to the Margins: Reflecting on Lessons Learned From a National Conference Focused on Establishing a Qualitative Research Platform for Childhood Disability and Race

The late Black feminist scholar, bell hooks, suggested that the margin can be a place of radical possibility, where marginalized people nourish their capacity for collective resistance. On the margin, it is possible to generate a counter-language. In this paper, we chronicle, describe and reflect upon how bell hooks' ideas inspired the creation of a national 2-day conference titled, ‘Listening to the Margins’. This conference was focused on understanding the intersectional experiences of childhood disability and race with a view to better supporting racialized disabled children, youth, and their families. This conference was needed because intersectional experiences of childhood disability and race have been silenced in childhood disability studies, critical race studies, and various other resistance-oriented systems of thought. Racialized children with disabilities and their families are often unsupported as they navigate Euro-centric healthcare systems. Reflecting on lessons learned from our conference, we suggest several strategies for advancing meaningful research programs with racialized disabled children. Strategies include centering the art of listening, amplifying the margin, engaging the arts to promote empathy, embracing psychosocial support in work on ableism and racism, developing clinical tools and practices that are grounded in lived patient experiences, and advancing decolonizing research that recognizes the role research has historically played in perpetuating colonial violence. In totality, this article unpacks how sitting on the margins, as bell hooks suggested, has allowed us to occupy a place of discomfort and creativity necessary to disrupt dominant discourses. In so doing, we have made space for the hidden narratives of racialized disabled children and their families

Listening to the Margins: Reflecting on Lessons Learned From a National Conference Focused on Establishing a Qualitative Research Platform for Childhood Disability and Race

The late Black feminist scholar, bell hooks, suggested that the margin can be a place of radical possibility, where marginalized people nourish their capacity for collective resistance. On the margin, it is possible to generate a counter-language. In this paper, we chronicle, describe and reflect upon how bell hooks' ideas inspired the creation of a national 2-day conference titled, ‘Listening to the Margins’. This conference was focused on understanding the intersectional experiences of childhood disability and race with a view to better supporting racialized disabled children, youth, and their families. This conference was needed because intersectional experiences of childhood disability and race have been silenced in childhood disability studies, critical race studies, and various other resistance-oriented systems of thought. Racialized children with disabilities and their families are often unsupported as they navigate Euro-centric healthcare systems. Reflecting on lessons learned from our conference, we suggest several strategies for advancing meaningful research programs with racialized disabled children. Strategies include centering the art of listening, amplifying the margin, engaging the arts to promote empathy, embracing psychosocial support in work on ableism and racism, developing clinical tools and practices that are grounded in lived patient experiences, and advancing decolonizing research that recognizes the role research has historically played in perpetuating colonial violence. In totality, this article unpacks how sitting on the margins, as bell hooks suggested, has allowed us to occupy a place of discomfort and creativity necessary to disrupt dominant discourses. In so doing, we have made space for the hidden narratives of racialized disabled children and their families. </jats:p