Synthesis and Structural Characterization of Novel Main Group Compounds with Multiple Bonding

无机、生物无机和有机金属项目的这一奖项支持加州大学戴维斯分校化学系的菲利普·P·鲍尔博士对新型主族化合物的继续研究。这项工作的主要重点将是合成和表征含有主族III和V元素之间多个键的单体和聚合物物种。在某些情况下，这两个元素都将是系列中较重的成员，例如In-P。在其他情况下，只有一个成员将是较晚的元素，例如B-Sb或B-Bi。将特别注意环物种的合成，其中可能发生离域成键。此外，还将尝试制备含有来自多键的III至VI族的主族元素的其他化合物。例如，将制备包含Al=C和Ga=C的物种。化合物将通过X-射线结构和核磁共振光谱进行表征。将制备含有硼族和氮族成员的新化合物。这些化合物是不寻常的，因为它们在这些家族的元素之间包含多个键。第二个键的强度将被确定，并与理论预测进行比较。这些元素之间的键通常不会出现在离散的分子中，但在半导体或陶瓷等材料中很常见。这项研究为更多地了解这种结合的性质提供了机会，从而可能有助于指导具有特定性质的电子或结构材料的设计。

This award in the Inorganic, Bioinorganic, and Organometallic Program supports continued investigation on novel main group compounds by Dr. Philip P. Power of the Chemistry Department at the University of California at Davis. The primary focus of the work will be synthesis and characterization of monomeric and polymeric species containing multiple bonds between main group III and V elements. In some cases both elements will be heavier members of the series, e.g., In-P. In other cases, only one member will be a later element, e.g., B-Sb or B-Bi. Particular attention will be paid to the synthesis of ring species, in which delocalized bonding might occur. In addition, preparation of other compounds containing main group elements from groups III through VI which are multiply bonded will be attempted. For example, species containing Al=C and Ga=C will be prepared. Compounds will be characterized by X-ray structures and NMR spectrometry. %%% New compounds containing members of the boron family and the nitrogen family will be prepared. These compounds are unusual because they contain multiple bonds between elements of these families. The strength of the second bond will be determined and compared to theoretical predictions. Bonds between these elements do not usually occur in discrete molecules, but are common in materials used as semiconductors or ceramics. This research provides an opportunity to learn more about the nature of such bonding and thus may help guide design of electronic or structural materials with specific properties.