US PATENT SUBCLASS 556 / 76
.~.~.~ Chalcogen bonded directly to the metal

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {3}
1  DF  .~ HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.) {19}
64  DF  .~.~ Arsenic, antimony, or bismuth containing (As, Sb, or Bi) {5}
76.~.~.~ Chalcogen bonded directly to the metal {2}
77  DF  .~.~.~.~> Containing -C(=X)X-, wherein the X's are the same or diverse chalcogens {2}
80  DF  .~.~.~.~> Carbocyclic ring bonded directly to the chalcogen

DEFINITION

Classification: 556/76

(under subclass 64) Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the metal.

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