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Phosphido-borane-supported stannates

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

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Abstract

© 2023 The Royal Society of Chemistry. The reactions between SnCl2 and three equivalents of the alkali metal phosphido-borane complexes [R2P(BH3)]M yield the corresponding tris(phosphido-borane)stannate complexes [LnM{R2P(BH3)}3Sn] [R2 = iPr2, LnM = (THF)3Li (2Li), (Et2O)Na (2Na), (Et2O)K (2K); R2 = Ph2, LnM = (THF)Li (3Li), (THF)(Et2O)Na (3Na), (THF)(Et2O)K (3K); R2 = iPrPh, LnM = (THF)4Li (4Li)]. In each case X-ray crystallography reveals an anion consisting of a trigonal pyramidal tin centre coordinated by the P atoms of the phosphido-borane ligands. These tris(phosphido-borane)stannate anions coordinate to the alkali metal cations via their BH3 hydrogen atoms in a variety of modes to give monomers, dimers, and polymers, depending on the alkali metal and the substituents at the phosphorus centres. In contrast, reactions between SnCl2 and three equivalents of [tBu2P(BH3)]M (M = Li, Na) gave the known hydride [M{tBu2P(BH3)}2SnH], according to multinuclear NMR spectroscopy.

Publication metadata

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

Publication type: Article

Publication status: Published

Journal: Dalton Transactions

Year: 2023

Volume: 52

Issue: 4

Pages: 947-954

Online publication date: 24/12/2022

Acceptance date: 21/12/2022

Date deposited: 16/01/2023

ISSN (print): 1477-9226

ISSN (electronic): 1477-9234

Publisher: Royal Society of Chemistry

URL: https://doi.org/10.1039/D2DT03587A

DOI: 10.1039/d2dt03587a

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