Search

The reaction of PdCl2(dippe), where dippe = 1,2-bis(diisopropylphosphino)ethane, with 2 equiv of KBEt3H in toluene generates the binuclear palladium(0) derivative [(dippe)Pd]2(μ-dippe) (4) in 35% yield; alternatively, the reaction of [(η³-C4H7)Pd]2(μ-Cl)2 with MeONa in the presence of 3 equiv of dippe generates 4 as well. Mechanistic studies on the attempted formation of mixed binuclear complexes are reported as well as the use of 4 as a catalyst for the reductive dechlorination of chloroarenes. Analysis of the second-order [AB2]2 spin system was accomplished by iteration of the 202.47 MHz ³¹P{¹H} NMR spectrum of 4; the solution structure and the solid-state structures are found to be very nearly identical.

The use of a desk-top computer in the field of formulation and process optimization is described. To illustrate an application of this technique, a series of tablets has been prepared according to a classical optimization design to determine the optman levels of process variables which meet pre-established specifications for product variables (hardness, thickness, etc.) based on second order polynomial predictor equations for each measured parameter.

Co-condensation of indium vapor and tert-butylphosphaethyne at 77 K yields two new, volatile In(I) complexes:  [In(η⁵-P3C2Bu^t2)] (1) and [In(η⁵-P2C3Bu^t3)] (2). A single-crystal X-ray diffraction experiment on 1 reveals a discrete molecular structure, involving half-sandwich coordination of the P3C2Bu^t2 ring around the indium center. 1 may be independently prepared by treating InI with the newly synthesized, base-free ligand salt K(P3C2Bu^t2).

The article presents a sample tax consequences of an employee of XO Gray Corp.

The article enumerates several legal documents which require copies such as stock option, restricted stock, award agreements, and employment agreements.

The authors describe two synthetic routes to fluorinated benzo(c)phenanthrenes.