Pap Levente G, Arulsamy Navamoney, Hulley Elliott B
Department of Chemistry, University of Wyoming, Dept. 3838, 1000 E. University Avenue, Laramie, Wyoming 82071, United States.
Polyhedron. 2018 Feb 15;141:385-392. doi: 10.1016/j.poly.2017.11.012. Epub 2017 Nov 14.
Crown ethers are useful macrocycles that act as size-selective binding sites for alkali metals. These frameworks have been incorporated into a number of macromolecular assemblies that use simple cations as reporters and/or activity triggers. Incorporating crown ethers into secondary coordination sphere ligand frameworks for transition metal chemistry will lead to new potential methods for controlling bond formation steps, and routes that couple traditional ligand frameworks with these moieties are highly desirable. Herein we report the syntheses of a family of tridentate phosphine complexes bearing tethered aza-crown ethers (lariats) designed to modularize the variation of aza-crown size, lariat length, and distal phosphine substituents, followed by the synthesis and solid-state structures of Mo(III) complexes bearing cations in the pendent crown ethers.
冠醚是有用的大环化合物，可作为碱金属的尺寸选择性结合位点。这些骨架已被纳入许多大分子组装体中，这些组装体使用简单阳离子作为报告分子和/或活性触发剂。将冠醚纳入过渡金属化学的二级配位球配体骨架中将产生控制键形成步骤的新潜在方法，并且将传统配体骨架与这些部分相结合的途径是非常可取的。在此，我们报告了一系列带有 tethered 氮杂冠醚（套索）的三齿膦配合物的合成，这些配合物旨在使氮杂冠尺寸、套索长度和远端膦取代基的变化模块化，随后是在悬垂冠醚中带有阳离子的 Mo(III) 配合物的合成和固态结构。
