US PATENT SUBCLASS 556 / 130
.~.~.~ 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}
118  DF  .~.~ Zinc, cadmium, or mercury containing (Zn, Cd, or Hg) {3}
130.~.~.~ Chalcogen bonded directly to the metal {2}
131  DF  .~.~.~.~> The chalcogen is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens {3}
135  DF  .~.~.~.~> Carbocyclic ring bonded directly to the chalcogen (e.g., zinc phenolates, zinc thiophenates, etc.)

DEFINITION

Classification: 556/130

(under subclass 118) Compounds wherein chalcogen (i.e., oxygen sulfur, selenium, or tellurium) is bonded directly to the metal.