4,13-Diaza-18-crown-6 (synonym Kryptofix 22) is a macrocyclic polyether ligand typically used as phase transfer catalyst (PTC) to bind cations in complex form.
A new highly sensitive and selective fluorescence chemosensor for Cr3+ based on rhodamine B and a 4,13-diaza-18-crown 6-ether conjugate.
Thermodynamic study of complexation reactions between 1,7,10,16 Tetra oxa 4,13 diaza cyclo octa decane (Kryptofix22) and Ni2+, Cd2+ and Ag+ metal cations in some pure and binary mixed non-aqueous solvents using conductometry.
Comparison of catalytic activities of new La(III) and Ce(III) complexes with different diaza-crown ether ligands for DNA hydrolytic cleavage.
 D.Liu, et al, RSC Adv., 2014, 4(5), pp 2563-2567.
 S.Iravani, et al, Russ. J. Electrochem., 2016, 52(11), pp 1015-1020.