prov:value
| - ormula ##STR57## (9) hexamethylhexacyclen 1,4,7,10,13,16-hexamethyl-1,4,7,10,13-16-hexaazacyclooctadecane! (Aldrich 34,903-8), of the formula ##STR58## and the like; (4) cyclic poly thia ethers (thia crown ethers and thia cryptands), wherein X is a sulfur atom, including (A) those wherein n is 3, such as (1) 1,4,7-trithiacyclodecane (Aldrich 33,139-2), of the formula ##STR59## (2) 1,4,7-trithiacyc
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