Metal Complexes with Fullerene and Polyphosphine Backbones

9321257 Balch加州大学戴维斯分校Alan Balch博士，化学系，加州大学戴维斯分校，由无机，生物无机和有机化学计划支持，研究富勒烯化学和多齿膦的金属络合物。金属碎片的可逆结合将作为获得高级富勒烯的络合物的途径进行评估，然后对其结构进行表征。这些配合物的化学性质将被评估，以了解基本性质和制备可能具有有趣的电子性质的结晶聚合物。将制备含有围绕分子内的开放空间排列的几个金属原子的聚膦络合物。这些将被用来探索这些空腔内外的反应性，并将评估络合物相互作用形成新的金属大分子的能力。 富勒烯是一类新的碳元素，其中碳原子排列成球状。虽然这些物种的行为在很大程度上是未知的，但有一些有趣的电学和其他性质的暗示。在这项研究中，将制备富勒烯的新衍生物，以确定它们的确切形状并探索它们的化学性质。希望新的聚合物材料可以从这个项目中产生。在一个独立但相关的研究部分中，将制备笼状化合物，其中几个金属原子面对内部空隙。由于由金属原子介导的化学反应通常需要暴露的金属，因此空隙内部和复合物外部的性质的比较将提供关于暴露的金属原子的确切性质的有价值的信息。

9321257 Balch University of California - Davis Dr. Alan Balch, Chemistry Department, University of California at Davis, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program for studies of fullerene chemistry and of metal complexes of polydentate phosphines. The reversible binding of metal fragments will be evaluated as a route to obtaining complexes of the higher fullerenes, which will then be structurally characterized. The chemistry of these complexes will be evaluated both to understand fundamental properties and to prepare crystalline polymers which may posses interesting electronic properties. Polyphosphine complexes which contain several metal atoms arranged around an open space within the molecule will be prepared. These will be utilized to explore reactivity both within and outside of these cavities and the ability of the complexes to interact with one another to form new metallomacromolecules will be evaluated. The fullerenes are a new class of the element carbon in which the carbon atoms are arranged in ball-like shapes. While the behavior of these species is largely unknown there are hints of interesting electrical and other properties. In this research new derivatives of the fullerenes will be prepared both in order to determine their exact shapes and to explore their chemical properties. It is hoped that new polymeric materials may result form this project. In a separate but related portion of the investigation, cage-like compounds will be prepared in which several metal atoms face an interior void. As chemical reactions which are mediated by metal atoms often require an exposed metal, a comparison of the properties inside the void and outside the complex will provide valuable information on the exact nature of exposed metal atoms.