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The 1,1-azoliumdithiocarboxylate cAACMe-CS2 (1a) was prepared and its redox chemistry was evaluated and compared to NHC based dithiocarboxylates IDipp-CS2 (1b) and IMes-CS2 (1c). Radical anions [carbene-CS2]˙− were prepared by metallic reduction as the potassium or magnesium ion complexes [K(18-crown-6)(cAACMe-CS2)] (2a), [K(18-crown-6)(NHC-CS2)] (NHC = IDipp: 2b, IMes: 2c), and [Mg(DippNacNac)(cAACMe-CS2)] (3) and extensively characterized (SC-XRD, EPR, UV/VIS/NIR, DFT). These complexes represent the first examples of isolated radical anions of 1,1-dithiolenes. [ABSTRACT FROM AUTHOR]

Beryllium-9 ([.sup.9]Be) quadrupolar coupling and chemical shift tensor data are reported for bis(1-(2,6-diisopropylphenyl)-3,3,5,5-tetramethylpyrrolidine-2-ylidene)beryllium (Be[(CAAC).sub.2]). These are the first such data for beryllium in a linear dicoordinate environment. The [.sup.9]Be quadrupolar coupling constant, 2.36(0.02) MHz, is the largest recorded in the solid state to date for this isotope. The span of the beryllium chemical shift tensor, 22(2) ppm, covers about half of the known [.sup.9]Be chemical shift range, and the isotropic [.sup.9]Be chemical shift, 32.0(0.3) ppm, is the largest reported in the solid state to our knowledge. DFT calculations reproduce the experimental data well. A natural localized molecular orbital approach has been used to explain 0the origins and orientation of the beryllium electric field gradient tensor. The single-crystal X-ray structure of a second polymorph of Be[(CAAC).sub.2] is also reported. Inspection of the powder X-ray diffraction data shows that the new crystal structure is part of the bulk product next to another crystalline phase. Therefore, experimental X-ray powder data for the microcrystalline powder sample and the SSNMR data do not fully match either the originally reported crystal structure (Arrowsmith et al. Nat. Chem. 2016, 8, 890-894) or the new polymorph. The ability of solid-state NMR and powder X-ray diffraction to characterize powdered samples was thus particularly useful in this work. Key words: beryllium, solid-state NMR, crystal structure. Nous presentons les donnees de couplage quadripolaire et de tenseur de deplacement chimique du beryllium 9 ([.sup.9]Be) pour le bis(1-(2,6-diisopropylphenyl)-3,3,5,5-tetramethylpyrrolidine-2-ylidene)beryllium (Be[(CAAC).sub.2]). Ces donnees sont les pre-mieres du genre a porter sur le beryllium dans un environnement lineaire dicoordonne. La valeur de la constante de couplage quadripolaire du [.sup.9]Be, soit 2,36(0,02) MHz, est la plus grande jamais enregistree a l'etat solide pour cet isotope. L'envergure du tenseur de deplacement chimique du beryllium, soit 22(2) ppm, couvre environ la moitie de l'etendue connue du deplacement chimique du [.sup.9]Be, et le deplacement chimique isotrope du [.sup.9]Be, soit 32,0(0,3) ppm, est a notre connaissance le plus ample jamais rapporte a l'etat solide. Les calculs de DFT concordent bien avec les donnees experimentales. Nous avons employe une approche d'orbitale moleculaire naturelle localisee pour expliquer les origines et l'orientation du tenseur de gradient de champ electrique du beryllium. Nous decrivons egalement la structure d'un second polymorphe du Be[(CAAC).sub.2] obtenue par diffraction des rayons X sur cristal unique. L'examen des donnees de diffraction des rayons X sur poudre (DRXP) revele que la nouvelle structure cristalline fait partie de la matiere adjacente a une autre phase cristalline. Par consequent, les donnees experimentales de DRXP de l'echantillon de poudre microcristalline et les donnees RMN a l'etat solide ne correspondent parfaitement ni a la structure cristalline publiee a l'origine (Arrowsmith et al., Nature Chem. 2016, 8, 890-894) ni au nouveau polymorphe. La possibilite de caracteriser des echantillons sous forme de poudre par RMN a l'etat solide et DRXP nous a donc ete particulierement utile dans le cadre de ces travaux. [Traduit par la Redaction] Mots-cles : beryllium, RMN a l'etat solide, structure crystalline., Introduction Beryllium is an alkaline earth metal that possesses the greatest electronegativity and smallest atomic radius of its family. (1) It is almost exclusively found in complexes with an oxidation [...]

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While uranium hydridoborate complexes containing the [BH4]- moiety have been well-known in the literature for many years, species with functionalized borate centers remained considerably rare. We were now able to prepare several uranium hydridoborates (1-4) with amino-substituted borate moieties with high selectivity by smooth reaction of [Cp*2UMe2] (Cp* = C5Me5) and [Cp'2UMe2] (Cp' = 1,2,4-tBu3C5H2) with the aminoborane H2BN(SiMe3)2. A combination of nuclear magnetic resonance spectroscopy, deuteration experiments, magnetic SQUID measurements, and X-ray/neutron diffraction studies was used to verify the anticipated molecular structures and oxidation states of 1-4 and helped to establish a linear tridentate coordination mode of the borate anions. [ABSTRACT FROM AUTHOR]

Women constitute the majority of the over-65 population, and this number grows disproportionately annually. With the `Baby Boomers' soon starting to enter old age, this number will skyrocket. While previous studies have looked at male alcohol uses, little attention has been focused on women. The present study investigates alcohol use in 500 women between the ages of 50-102 collected from the 2000 National Household Survey on Drug Abuse. Results indicate that more than 15% of older women regularly drink in excess of the recommended guidelines. As they age, the women of this population, are also at risk for developing mental and physical disorders and losing essential social networks. These risks have been shown to increase the incidence of alcohol misuse and lead to a swifter progression of alcohol-related illnesses. Further discussion will focus on the incoming `Baby Boomers' affect on this potential dilemma.

A national survey of 400 nursing homes focused on the rarely explored topic of terminal care for residents with Alzheimer's disease. Although respondents emphasize the salience of care that keeps the resident comfortable, most were not highly confident in their ability to read and understand pain experiences of end-stage dementia residents, and many expressed problems managing pain control with these terminal residents. While best and least good practices emphasized that staff treats residents like family, the low priority on providing support for surviving residents and caregiving staff was emphasized. Findings provide a challenge to nursing homes to acknowledge the need to be proactive in relation to residents, family, and staff around end-of-life issues. Copyright © 2002 by Aspen Publishers, Inc. [ABSTRACT FROM AUTHOR]