Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

New alkali metal primary amide ladder structures derived from tBuNH(2): building cisoid and transoid ring conformations into ladder frameworks

Clegg, W and Henderson, K W and Horsburgh, L and Mackenzie, F M and Mulvey, Robert (1998) New alkali metal primary amide ladder structures derived from tBuNH(2): building cisoid and transoid ring conformations into ladder frameworks. Chemistry - A European Journal, 4 (1). pp. 53-56. ISSN 0947-6539

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Two novel alkali metal amide ladder complexes have been synthesised and crystallographically characterised. Derived from the same primary amine precursor (tBuNH(2)), they represent important additions to the series of ladder arrangements previously established within secondary amide chemistry. Thus the sodium amide.amine complex [{[tBuN(H)Na](3) . H(2)NtBu}(x)] forms an infinite wavelike ladder structure. Covering three nitrogen-sodium rungs, its curved sections display a cisoid conformation of amide substituents; but where these curved sections fuse, a transoid conformation is found. Every third sodium cation along the ladder framework is ligated by a tert-butylamine solvent molecule. In contrast, the heterobimetallic derivative, [{[tBuN(H)](2)LiNa . tmeda}(2)], adopts a finite oligomeric ladder structure limited to only four nitrogen-metal rungs in length. The central rungs contain lithium, while the outer rungs contain sodium. As in the all-sodium structure, the ladder is curved; there is a mixture of cisoid and transoid ring conformations within its framework. TMEDA solvent molecules complete the structure by chelating the sodium cations at the ladder ends.