Externally and Internally Functionalized Copper(II) β-Diketonate Molecular Squares.

Five functionalized bis(β-diketones) and their Cu(II) molecular squares are described. The new bis(β-diketones), m-pbhxH2 (3), 5-MeO-m-pbaH2 (4), 5-BuO-m-pbaH2 (5), 2-MeO-m-pbaH2 (6), and 2-MeO-m-pbprH2 (7), were prepared by reaction of the corresponding aldehydes with phospholenes, as we previously reported for m-pbaH2 (1) and m-pbprH2 (2). Ligand 3 has long alkyl chains in its β-diketone moieties, while ligands 4-7 have alkoxy substituents on their aromatic rings.

Use of Emergency Medicine Milestones as Items on End-of-Shift Evaluations Results in Overestimates of Residents' Proficiency Level.

Background: The emergency medicine milestones were developed to provide more objective resident assessment than current methods. However, little is known about the best practices for applying the milestones in resident assessment.

Objective: We examined the utility of end-of-shift evaluations (ESEs) constructed using the milestones in resident assessment.