| abstract |
Compounds having the formula: ##STR1## wherein each R 1 and R 2 is a hydrocarbon-based radical; R 3 is a member selected from the group consisting of hydrogen, halogen, lower alkyl, and substituted lower alkyl; each of X 1 , X 2 and X 3 is oxygen or sulfur; and a and b are each 0 or 1, are useful as lubricant additives and have insecticidal and pesticidal properties. |