Monomeric 16-Electron π-Diborene Complexes of Zn(II) and Cd(II)

Please always quote using this URN: urn:nbn:de:bvb:20-opus-153058
  • Despite the prevalence of stable π-complexes of most d\(^{10}\) metals, such as Cu(I) and Ni(0), with ethylene and other olefins, complexation of d\(^{10}\) Zn(II) to simple olefins is too weak to form isolable complexes due to the metal ion's limited capacity for π-backdonation. By employing more strongly donating π- ligands, namely neutral diborenes with a high-lying π(B=B) or- bital, monomeric 16-electron M(II)-diborene (M = Zn, Cd) π- complexes were synthesized in good yields. Metal–B2 π- interactions in both the solid and solutionDespite the prevalence of stable π-complexes of most d\(^{10}\) metals, such as Cu(I) and Ni(0), with ethylene and other olefins, complexation of d\(^{10}\) Zn(II) to simple olefins is too weak to form isolable complexes due to the metal ion's limited capacity for π-backdonation. By employing more strongly donating π- ligands, namely neutral diborenes with a high-lying π(B=B) or- bital, monomeric 16-electron M(II)-diborene (M = Zn, Cd) π- complexes were synthesized in good yields. Metal–B2 π- interactions in both the solid and solution state were confirmed by single-crystal X-ray analyses and their solution NMR and UV-vis absorption spectroscopy, respectively. The M(II) centers adopt a trigonal planar geometry and interact almost symmetrically with both boron atoms. The MB2 planes significantly twist out of the MX\(_2\) planes about the M-centroid(B–B) vector, with angles rang- ing from 47.0° to 85.5°, depending on the steric interactions be- tween the diborene ligand and the MX\(_2\) fragment.show moreshow less

Export metadata

Additional Services

Share in Twitter Search Google Scholar Statistics
Metadaten
Author: Sunewang Rixin Wang, Merle Arrowsmith, Holger Braunschweig, Rian Dewhurst, Michael Dömling, James Mattock, Conor Pranckevicius, Alfredo Vargas
URN:urn:nbn:de:bvb:20-opus-153058
Document Type:Preprint
Faculties:Fakultät für Chemie und Pharmazie / Institut für Anorganische Chemie
Language:English
Parent Title (English):Journal of the American Chemical Society
Year of Completion:2017
Source:Journal of the American Chemical Society, 2017, 139 (31), pp 10661–10664
DOI:https://doi.org/10.1021/jacs.7b06644
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie / 546 Anorganische Chemie
Tag:boron; diborene; transition metal complex
Release Date:2017/09/07
Note:
This is the pre-peer reviewed version of the following article: Journal of the American Chemical Society, 2017, 139 (31), pp 10661–10664, which has been published in final form at doi:10.1021/jacs.7b06644.
EU-Project number / Contract (GA) number:669054
OpenAIRE:OpenAIRE
Licence (German):License LogoDeutsches Urheberrecht