Jump to main content
Jump to site search


A structural study of alkaline earth metal complexes with hybrid disila-crown ethers

Author affiliations

Abstract

Compounds consisting of [M(1,2-disila-[3n]crown-n)]2+ (M = Mg, Ca, Sr, Ba; n = 5, 6) and [Ba(1,2-disila-benzo[18]crown-6)]2+ cations and different anions were obtained by equimolar reaction of the hybrid disila-crown ethers 1,2-disila[15]crown-5 (1), 1,2-disila[18]crown-6 (2) and 1,2-disila-benzo[18]crown-6 (7) with alkaline earth metal salts. Even with strongly coordinating anions such as Br or I stable complexes could be obtained, showing the good coordination ability of these ligands. The structures of all coordination compounds were determined via single crystal X-ray diffraction (XRD). By means of DFT calculations, the complexation ability of 1,2-disila[15]crown-5 (1) towards magnesium bromide was determined to be considerably higher compared to [15]crown-5. The opposite case was observed in solution as the exchange of calcium cations between [18]crown-6 and 1,2-disila[18]crown-6 (2) was studied via dynamic proton nuclear magnetic resonance (NMR) spectroscopy.

Graphical abstract: A structural study of alkaline earth metal complexes with hybrid disila-crown ethers

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 19 Oct 2016, accepted on 24 Nov 2016 and first published on 30 Nov 2016


Article type: Paper
DOI: 10.1039/C6DT04018G
Citation: Dalton Trans., 2017, Advance Article
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    A structural study of alkaline earth metal complexes with hybrid disila-crown ethers

    F. Dankert, K. Reuter, C. Donsbach and C. von Hänisch, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C6DT04018G

Search articles by author