Journal
TETRAHEDRON
Volume 75, Issue 15, Pages 2255-2260Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2019.02.047
Keywords
Boranes; Acceptor ligands; Boron heterocycles
Categories
Funding
- National Science Foundation [CHE-1752876]
- American Chemical Society Petroleum Research Fund [57314-DNI3]
- NSF MRI grant [CHE-1626673]
- Army Research Office instrumentation grant [W911NF-16-1-0523]
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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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