Exploring the solid state and solution structural chemistry of the utility amide potassium hexamethyldisilazide (KHMDS)

Ojeda-Amador, Ana I. and Martínez-Martínez, Antonio J. and Robertson, Gemma M. and Robertson, Stuart D. and Kennedy, Alan R. and O'Hara, Charles T. (2017) Exploring the solid state and solution structural chemistry of the utility amide potassium hexamethyldisilazide (KHMDS). Dalton Transactions, 46 (19). pp. 6392-6403. ISSN 1477-9234 (https://doi.org/10.1039/C7DT01118K)

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Abstract

The structural chemistry of eleven donor complexes of the important Brønsted base potassium 1,1,1,3,3,3-hexamethyldisilazide (KHMDS) has been studied. Depending on the donor, each complex adopted one of four general structural motifs. Specifically, in this study the donors employed were toluene (to give polymeric 1 and dimeric 2), THF (dimeric 3), N,N,N',N'-tetramethylethylenediamine (TMEDA) (dimeric 4), (R,R)-N,N,N',N'-tetramethyl-1,2-diaminocyclohexane [(R,R)-TMCDA] (dimeric 5), 12-crown-4 (dimeric 6), N,N,N',N'-tetramethyldiaminoethyl ether (TMDAE) (tetranuclear dimeric 8 and monomeric 10), N,N,N',N',N''-pentamethyldiethylentriamine (PMDETA) (tetranuclear dimeric 7), tris[2-dimethyl(amino)ethyl]amine (Me6TREN) (tetranuclear dimeric 9) and tris{2-(2-methoxyethoxy)ethyl}amine (TMEEA) (monomeric 11). The complexes were also studied in solution by 1H and 13C NMR spectroscopy as well as DOSY NMR spectroscopy.

ORCID iDs

Ojeda-Amador, Ana I. ORCID logoORCID: https://orcid.org/0000-0003-3991-2851, Martínez-Martínez, Antonio J., Robertson, Gemma M., Robertson, Stuart D. ORCID logoORCID: https://orcid.org/0000-0002-9330-8770, Kennedy, Alan R. ORCID logoORCID: https://orcid.org/0000-0003-3652-6015 and O'Hara, Charles T.;
  • Item type:Article
    ID code:60447
    Dates:
    Date
    Event
    15 May 2017
    Published
    3 May 2017
    Published Online
    13 April 2017
    Accepted
    Keywords:structural chemistry, Brønsted base potassium, structural motifs, spectroscopic analysis, Chemistry, Chemistry(all)
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:18 Apr 2017 09:20
    Last modified:04 Dec 2022 04:04
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/60447
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