作者:Madeleine A. Ehweiner、Carina Vidovič、Ferdinand Belaj、Nadia C. Mösch-Zanetti
DOI:10.1021/acs.inorgchem.9b00973
日期:2019.6.17
to make the first coordination sphere more sulfur-rich forming [W(CO)2(mt)(PhTt)] (3). Alkyne tungsten complexes employing the sulfur-rich scorpionate ligand were accessible by reaction of [WBr2(CO)(C2R2)2(NCMe)] (R = Me, Ph) with Cs[PhTt] forming [WBr(CO)(C2R2)2(PhTt-S,S′)] (R = Me 4, Ph 5), with the potentially tridentate ligand coordinated only via two sulfur atoms. In the case of 4, the higher flexibility
报道了一系列新型的钨配合物的合成和表征,这些配合物采用了生物启发的,富硫的硫氰酸盐配体[PhTt](苯基三((甲硫基)甲基)硼酸酯)。从先前发布的钨前驱物[WBr 2(CO)3(NCMe)2 ]开始,与1当量的Cs [PhTt]进行盐复分解反应生成所需的络合物[WBr(CO)3(PhTt)](1) ,使其成为第一个采用聚(硫醚)硼酸酯配体的钨配合物。令人惊讶地,反应[WBR 2(CO)3(NCMe)2 ]与过量的配位体的配合物,得到[W(CO)2(η 2 -CH 2SMe)(PhTt)](2)作为主要产物的双齿(甲硫基)甲烷配体。由此,形成苯基二((甲硫基)甲基)硼烷,将其分离并通过NMR光谱表征。为了使第一个配位球更富硫,形成[W(CO)2(mt)(PhTt)] ,将[WBr(CO)3(PhTt)]中的溴代配体进一步取代为S,N-二齿甲硫唑。](3)。通过[WBr 2(CO)(C 2 R