The Chemistry of Organosamarium(II) and Related Compounds

无机化学、生物无机化学和金属有机化学计划中的这一项目为加州大学欧文分校化学系的威廉·J·埃文斯在有机胺(II)化合物化学方面的研究提供了持续的支持。将尝试分离由二氨基四环戊二烯空腔形成的笼子中的烯烃。将测试环状单烯和双烯的反应性。将研究Sm(III)的炔化物络合物的偶联反应，以及空间拥挤的三(五甲基环戊二烯)Sm化合物的形成细节。对最近表征的氮化合物也将进行进一步的工作，特别是关于N-N键的断裂及其取代和氧化还原反应。将测试钐物种在形成多(主族元素)离子方面的作用，以及光化学反应的促进作用。这个基础研究项目将探索稀土金属Sm的有机金属化学。对这类化合物的研究一直很有限，因此本工作的目标是扩大此类化合物的已知反应性范围，并确定影响反应机理的一些参数。不仅制备了具有特殊结构的化合物，而且还发现它们参与了可能具有某些合成用途的反应。

This project in the Inorganic, Bioinorganic, and Organometallic Chemistry program provides continued support for the research of William J. Evans of the Chemistry Department, University of California at Irvine, on the chemistry of organosamarium(II) compounds. Attempts will be made to isolate an alkene in a cage created by a disamarium tetracyclopentadienyl cavity. Reactivity of cyclic monoalkenes and dienes will be tested. Coupling reactions of alkynide complexes of Sm(III) will be investigated, as will the details of the formation of the sterically crowded tris(pentamethylcyclopentadienyl)Sm compounds. Further work will also be carried out on the recently characterized dinitrogen compounds, especially concerning cleavage of the N-N bond and its substitution and oxidation-reduction reactions. The utility of samarium species in formation of poly(main group element) ions will be tested as will the promotion of reactions photochemically. %%% This fundamental research project will explore the organometallic chemistry of samarium, a lanthanide metal. Research on samarium compounds of this type has been limited, so the goal of this work is to expand the range of reactivity known for such compounds and to determine some of the parameters affecting reaction mechanisms. Not only have compounds with unusual structures been prepared, but they have also been found to participate in reactions which may have some synthetic utility.