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Substituent Effects on the Structures of Alkali Metal Phosphido-Borane Complexes

Lookup NU author(s): Dr Keith Izod, Dr Paul Waddell



This is the authors' accepted manuscript of an article that has been published in its final definitive form by John Wiley and Sons Inc., 2022.

For re-use rights please refer to the publisher's terms and conditions.


© 2022 Wiley-VCH GmbH. Metalation of tBu2PH(BH3) (1H), iPr2PH(BH3) (2H), iPrPhPH(BH3) (3H), Ph2PH(BH3) (4H) or (Mes)2PH(BH3) (5H) with one equivalent of nBuLi in either diethyl ether or THF gave the corresponding phosphido-borane complexes, which were obtained as single crystals of the solvates [{tBu2P(BH3)}Li(OEt2)]∞ (1Li), [{iPr2P(BH3)}Li(THF)2]∞ (2Li), [{iPrPhP(BH3)}Li(OEt2)2]∞ (3Li), [{Ph2P(BH3)}Li(OEt2)2]∞ (4Li), and [{(Mes)2P(BH3)}Li(THF)2]2 (5Li) after crystallization from diethyl ether; the alternative adduct [{Ph2P(BH3)}Li(TMEDA)]∞ (4Li(TMEDA)) was isolated from the reaction of 4Li with TMEDA. Similar metalation reactions between 1H, 2H or 4H and PhCH2Na gave the complexes [{tBu2P(BH3)}Na(THF)]∞ (1Na) and [{iPr2P(BH3)}Na(THF)]∞ (2Na), and [{Ph2P(BH3)}Na(TMEDA)(THF)]∞ (4Na(TMEDA)). Compounds 1Li, 2Li, 3Li, 4Li and 4Li(TMEDA) crystallize as zig-zag polymers, while 5Li crystallizes as a centrosymmetric dimer; compounds 1Na and 2Na crystallize as ribbon polymers, although these differ significantly in structure, while 4Na(TMEDA) crystallizes as a zig-zag polymer.

Publication metadata

Author(s): Izod K, Madlool AM, Craig A, Waddell PG

Publication type: Article

Publication status: Published

Journal: European Journal of Inorganic Chemistry

Year: 2022

Volume: 2022

Issue: 15

Print publication date: 25/05/2022

Online publication date: 12/04/2022

Acceptance date: 22/02/2022

Date deposited: 11/05/2022

ISSN (print): 1434-1948

ISSN (electronic): 1099-0682

Publisher: John Wiley and Sons Inc.


DOI: 10.1002/ejic.202200123

ePrints DOI: 10.57711/8vdq-xh09


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