The Chemistry of Organosamarium(II) and Related Compounds

这个无机、生物无机和有机金属化学项目为加州大学欧文分校化学系的William J. Evans的有机钐（II）化合物的化学研究提供了持续的支持。将尝试在由二钐四环戊二烯腔形成的笼中分离烯烃。将测试环单烯和环二烯的反应性。将研究Sm（III）炔化物配合物的偶联反应，以及空间拥挤的三（五甲基环戊二烯基）Sm化合物形成的细节。还将对最近表征的二氮化合物进行进一步的工作，特别是关于N-N键的裂解及其取代和氧化还原反应。将测试钐在形成多（主族元素）离子中的效用，以及促进光化学反应。这个基础研究项目将探索钐的有机金属化学，一种镧系金属。对这种类型的钐化合物的研究是有限的，所以这项工作的目标是扩大已知的这类化合物的反应性范围，并确定一些影响反应机制的参数。不仅制备了结构奇特的化合物，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.