Matthew Everett, Andrew Jolleys, William Levason, David Pugh and Gillian Reid
Chem. Commun., 2014,50, 5843-5846
DOI:
10.1039/C4CC01407C,
Communication
Highly unusual Na+ complexes with neutral tri- and tetra-amines are isolable in good yield from the reaction of NaBArF with the amine in organic media. Structural characterisation reveals primary Na–N bonding, including an unusual sandwich cation [Na(Me3tacn)2]+, derived from homoleptic N6-coordination via two Me3-tacn ligands, and the distorted 5-coordinate [Na(thf)(Me4cyclam)]+.