Search for "cation affinity" in Full Text gives 3 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2012, 8, 1458–1478, doi:10.3762/bjoc.8.166
Beilstein J. Org. Chem. 2012, 8, 1406–1442, doi:10.3762/bjoc.8.163
Beilstein J. Org. Chem. 2010, 6, No. 32, doi:10.3762/bjoc.6.32