Modular Design Strategy toward Second-Generation Tridentate Carbodiphosphorane N,C,N Ligands with a Central Four-Electron Carbon Donor Motif and Their Complexes
作者:Marius Klein、Jörg Sundermeyer
DOI:10.1021/acs.organomet.1c00231
日期:2021.7.12
phorane (CDP(3,5-MePz)2, 2) and sym-bis(pyridin-2-yloxy)carbodiphosphorane (CDP(O-2Py)2, 3). Due to their superbasic central two-/four-electron carbon donor functionality, these neutral ligands are electronically flexible to act as neutral six- or eight-electron donors, as pincer ligand templates, or as two geminally metal bridging ligands. Their potential to form mono- and dinuclear complexes involving
的反应符号双(P -chlorodiphenyl)carbodiphosphorane(1与双官能亲核试剂引线带有两个附加的螯合剂N-供体官能carbodiphosphoranes)。sym -bis(3,5-dimethyl-1 H -pyrazol-1-yl)carbodiphosphorane (CDP( 3,5-Me Pz) 2 , 2 ) 和sym -bis的合成和表征证明了概念的证明(pyridin-2-yloxy)carbodiphosphorane (CDP(O- 2 Py) 2 , 3)。由于它们的超碱性中心二/四电子碳供体官能团,这些中性配体在电子上具有灵活性,可用作中性六或八电子供体、钳状配体模板或两个成对金属桥接配体。已经探索了它们形成涉及两个 6 环或两个 5 环 N,C 螯合环动机的单核和双核复合物的潜力。2和3与fac- [M(CO) 3 ] 片段的复合物(ls