Comparative Reactivity of Sterically Crowded nf<sup>3</sup> (C<sub>5</sub>Me<sub>5</sub>)<sub>3</sub>Nd and (C<sub>5</sub>Me<sub>5</sub>)<sub>3</sub>U Complexes with CO: Formation of a Nonclassical Carbonium Ion versus an f Element Metal Carbonyl Complex
收藏NIAID Data Ecosystem2026-03-06 收录
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资源简介：
Sterically crowded isoelectronic nf3 (C5Me5)3M complexes of neodymium and uranium, compounds which have unconventionally long metal ligand distances, are found to react very differently with CO as a substrate. The 4f3 complex (C5Me5)3Nd reacts with CO to form a nonclassical carbonium ion complex, (C5Me5)2Nd(O2C7Me5), which contains a three-coordinate planar carbon. (C5Me5)3U reacts with CO to form an even more crowded CO adduct through a reaction type never observed before for (C5Me5)3M compounds. The rare uranium carbonyl complex, (C5Me5)3U(CO), has νCO = 1922 cm-1 and a U−C(CO) distance of 2.485(9) Å.
创建时间：
2016-08-18
