Nickel complexes of phosphine-appended benzannulated boron heterocycles

TETRAHEDRON

卷:75

Article

Essex, Laura A.¹  Taylor, Jordan W.¹  Harman, W. Hill¹ 

[1] Univ Calif Riverside, Dept Chem, 501 Big Springs Rd, Riverside, CA 92521 USA

关键词: Boranes;    Acceptor ligands;    Boron heterocycles;   

DOI  :  10.1016/j.tet.2019.02.047

来源: Elsevier

【 摘 要 】

We report the synthesis and characterization of two diphosphine nickel complexes containing 9-borafluorene (PBFIu, 9-(diisopropylphosphino)phenyl-9-borafluorene) and 9,10-dihydroboranthrene (B2P2, 9,10-bis(2-(diisopropylphosPhino)phenyl)-9,10-dihydroboranthrene) cores. Metalation of PBFlu and B2P2 with Ni(PPh3)(4) leads to the monometallic complexes (PBFIu)Ni(PPh3) and (B2P2)Ni, respectively. Cyclic voltammetry studies show a reversible redox event at similar to 0.1 V and a quasi-reversible event at ca. -3 V versus ferrocene/ferrocenium for (B2P2)Ni while (PBFlu)Ni(PPh3) features no reversible redox events. Electronic structure calculations were performed to provide further insight into the bonding in these complexes. (C) 2019 Elsevier Ltd. All rights reserved.

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