Complexes in Which sp Carbon Chains Span Two Transition Metals

John A.Gladysz博士，犹他大学化学系，在无机、生物无机和有机金属化学项目的支持下，研究sp杂化碳原子链跨越两个过渡金属的复合物。该项目的目的是合成配合物，其中线状sp杂化碳链连接两个过渡金属端基。在M(CC)nH脱质子后，与金属卤化物的反应将两种金属通过偶数碳链连接起来，而与配位一氧化碳反应后羰基脱氧将产生带有奇数碳原子的连接。将设计一系列的制剂，以生产所需的具有各种碳链长度的金属-聚乙烯基起始材料。二元金属的电荷转移和氧化还原化学将被确定，以确定链长度对配合物结构和电子性质的影响。这项研究的目标化合物含有两种金属，它们通过一条仅由碳原子组成的长链连接在一起。这些链可以作为“电线”，通过它，电子或磁性信息可以从一种金属转移到另一种金属。因此，它们可以构成微电子设备的基础，并为了解分离良好的金属如何通过扩展连接单元相互影响奠定基础。

Dr. John A.Gladysz, Chemistry Department, University of Utah, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program, to investigate complexes in which chains of sp hybridized carbon atoms span two transition metals. The objective of the project is to synthesize complexes in which wire-like sp hybridized carbon chains connect two transition metal end groups. After deprotonation of M(CC)nH the reaction with metal halides will link the two metals through an even number carbon chain, while reaction with coordinated carbon monoxide followed by deoxygenation of the carbonyl will yield a link with an odd number of carbon atoms. A series of preparations will be designed to produce the requisite metalla-poly-ynyl starting materials with a variety of carbon chain lengths. The charge transfer and redox chemistry of the dimetalla species will be determined to define the effect of chain length on the structure and electronic properties of the complexes. The compounds targeted in this investigation contain two metals that are linked through a long chain that consists solely of carbon atoms. These chains can serve as 'wires' through which electrons or magnetic information can be transferred from one metal to the other. As such they can form the basis for micro-electronic devices and for the basic understanding of how well separated metals can influence one another through extended linking units.