Reusable oxidation catalysis using metal-monocatecholato species in a robust metal-organic framework.

An isolated metal-monocatecholato moiety has been achieved in a highly robust metal-organic framework (MOF) by two fundamentally different postsynthetic strategies: postsynthetic deprotection (PSD) and postsynthetic exchange (PSE). Compared with PSD, PSE proved to be a more facile and efficient functionalization approach to access MOFs that could not be directly synthesized under solvothermal conditions. Metalation of the catechol functionality residing in the MOFs resulted in unprecedented Fe-monocatecholato and Cr-monocatecholato species, which were characterized by X-ray absorption spectroscopy, X-band electron paramagnetic resonance spectroscopy, and (57)Fe Mössbauer spectroscopy. The resulting materials are among the first examples of Zr(IV)-based UiO MOFs (UiO = University of Oslo) with coordinatively unsaturated active metal centers. Importantly, the Cr-metalated MOFs are active and efficient catalysts for the oxidation of alcohols to ketones using a wide range of substrates. Catalysis could be achieved with very low metal loadings (0.5-1 mol %). Unlike zeolite-supported, Cr-exchange oxidation catalysts, the MOF-based catalysts reported here are completely recyclable and reusable, which may make them attractive catalysts for 'green' chemistry processes

Low-valent iron: an Fe(I) ate compound as a building block for a linear trinuclear Fe cluster

A low-valent trinuclear iron complex with an unusual linear Fe(I)–Fe(II)–Fe(I) unit is presented. It is accessed in a rational approach using a salt metathesis reaction between a new anionic Fe(I) containing heterocycle and FeCl2. Its electronic structure was studied by single crystal XRD analysis, EPR and Mössbauer spectroscopy, and magnetic susceptibility measurements

The Relationship Between Self-Care Agency and Health-Promoting Behavior in Women with Chronic Illness

It is certainly a fact that women live longer than men. The reasons for the more lengthy life are controversial, but undoubtedly living longer increases the chances of developing chronic illnesses. Women are therefore more likely to develop chronic illness in later age than men. The purpose of this study was to explore the impact of being able to perform self-care (self-care agency) and practicing health-promoting behavior in a sample of adult women with chronic illness. Practicing self-care to promote health may reduce the incidence of or effects of chronic illnesses and also reduce medical expenses in addition to reducing the necessity for frequent medical care. Those at increased risk for developing chronic illnesses may or may not practice health-promoting behavior. It was not known whether a relationship between self-care agency and health-promoting behavior existed. The framework for this investigation merged work of two nursing theorists. The work of Nola Pender and the Health-Promotion Model (1996) along with Dorothea Orem and the Self-Care Deficit Nursing Theory (2001) were incorporated into this investigation. The research design for this investigation was a quantitative descriptive correlational design. Data were collected from patients who were seeking care at a selected internal medicine practice in the Midwest, met inclusion criteria, and agreed to participate. The survey results were based on the information gathered from a completed demographic form and also from survey instruments of Self-Care Agency Scale (Kearney & Fleischer, 1979) and the Health-Promoting Lifestyle Profile II (Walker, Sechrist, & Pender, 1995). The findings from the survey results did show that a significant positive correlation existed between self-care agency and health-promoting behavior