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，通常含有一些膦结合位点，形成含有金属离子簇的复合物。 这些簇显示出作为许多有毒污染物的传感器和作为一些具有商业重要性的反应的催化剂的前景。 将追求以下目标。 (1)用于构建过渡金属配合物的新型多功能配体的设计与合成。 （2）开发这些新配体的配位化学，使得金属簇形成反应可以在一定程度上的可预测性和控制性下进行。 （3）以金属离子作为其环状结构的固有部分的新型金属大环化合物的设计和合成，并探索它们与无机和有机物质结合的能力。 (4) 检查这些团簇中的金属-金属键合及其电子光谱和发光。 (5)探索其作为催化剂和有机合成的用途。 (6) 启动光化学实验，包括研究这些团簇激发态的反应性。 (7)探讨单膦作为桥联配体的能力。

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.