Highly Strained Pn(CH) (Pn = N, P, As, Sb, Bi) Tetrahedranes: Theoretical Characterization.

Recent experimental research by Cummins and co-workers has established the existence of a tetrahedrane molecule with one CH moiety replaced by phosphorus. We present here the first theoretical studies of the entire Pn(CH) (Pn = N, P, As, Sb, Bi) class of molecules. Geometries are obtained at the highly reliable CCSD(T)/aug-cc-pwCVTZ(-PP) level of theory.

Organizing to learn: recognizing and cultivating learning communities.

One of the most effective ways to learn is in a community of people with a shared purpose. Therefore, by recognizing and cultivating the learning communities that arise within most organizational structures, we are actually organizing ourselves to learn. Using stories to inspire the reader to reflect and apply these concepts, the author explores learning communities in a variety of fields, including examples that involve entire organizations, single workgroups, and those that cross organizational boundaries.