Synthesis and Structure of Polynuclear Clusters Constructed about Polyphosphine Backbones

在化学部无机、生物无机和有机金属项目的这个项目中，Balch将继续合成配体，通常含有一些磷化氢结合位点，形成含有金属离子簇的配合物。这些簇有希望作为许多有毒污染物的传感器和一些具有商业重要性的反应的催化剂。将实现以下目标。(1)设计和合成用于构建过渡金属配合物的新型多官能配体。(2)发展这些新配体的配位化学，使金属簇形成反应的进行具有一定程度的可预测性和可控性。(3)设计和合成含有金属离子的新型金属大环，并探索其与无机和有机物质结合的能力。(4)研究这些团簇中的金属-金属键，以及它们的电子光谱和发光。(5)探索其作为催化剂和在有机合成中的应用。(6)开展光化学实验，包括研究这些团簇激发态的反应性。(7)探索单膦作为桥接配体的能力。

In this project in the Inorganic, Bioinorganic, and Organometallic Program of the Chemistry Division, Balch will continue the synthesis of ligands, generally containing some phosphine binding sites, that form complexes containing clusters of metal ions. These clusters show promise as sensors for a number of toxic pollutants and as catalysts for some reactions of commercial importance. The following goals will be pursued. (1) The design and synthesis of new polyfunctional ligands for constructing transition metal complexes. (2) To develop the coordination chemistry of these new ligands so that metal cluster forming reactions can be carried out with some degree of predictability and control. (3) The design and synthesis of new metallo- macrocycles which contain metal ions as an intrinsic part of their cyclic structure, and the exploration of the ability of these to bind inorganic and organic substances. (4) To examine the metal-metal bonding in these clusters and their electronic spectra and luminescence. (5) To explore their use as catalysts and in organic synthesis. (6) To initiate photochemical experiments including studies of the reactivity of excited states of these clusters. (7) To explore the ability of monophosphines to function as bridging ligands.