US PATENT SUBCLASS 548 / 107
.~.~.~.~ The metal is in an anion and the five-membered hetero ring is in a cation

Current as of: June, 1999
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548 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {4}
100  DF  .~.~ Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) {18}
101  DF  .~.~.~ Heavy metal or aluminum containing {8}
107.~.~.~.~ The metal is in an anion and the five-membered hetero ring is in a cation

DEFINITION

Classification: 548/107

(under subclass 101) Compounds wherein the metal is in an anion, i.e., a group having a negative charge, and the

five-membered hetero ring is in a cation, i.e., a group having a positive charge.

(1) Note. An example of a compound provided for herein is: [figure]