lariat ethers

Crownethers (See: crown) having a side chain that holds one or more additional coordinating sites.
Source:
PAC, 1995, 67, 1307 (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1347
See also:
PAC, 1988, 60, 461 (Lariat ethers: from cation complexation to supramolecular assemblies) on page 461