Yamamoto Koji, Sawada Junya, Murahashi Tetsuro
Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
Chemistry. 2020 Jul 8;26(38):8388-8392. doi: 10.1002/chem.202001796. Epub 2020 Jun 11.
We report the triply bridging coordination of thiophene and selenophene to a trinuclear metal cluster site. The triply bridging coordination of selenophene at a Pd site forms a unique spiro-type Pd cluster. Furthermore, either thiophene or selenophene is accommodated stably at a Pd site supported by a backside μ -cyclooctatetraene ligand through the face-capping μ -coordination. The Pd site supported by the cyclooctatetraene ligand showed higher binding affinity of benzene over thiophene, although a Pd site strongly favors thiophene over benzene.
我们报道了噻吩和硒吩与三核金属簇位点的三重桥连配位。硒吩在钯位点的三重桥连配位形成了一种独特的螺型钯簇。此外，噻吩或硒吩通过面帽式μ-配位稳定地容纳在由背面μ-环辛四烯配体支撑的钯位点上。尽管钯位点对噻吩的偏好远高于苯，但由环辛四烯配体支撑的钯位点对苯的结合亲和力高于噻吩。
