US PATENT SUBCLASS 556 / 40
.~.~ Plural -C(=X)- groups, wherein X is chalcogen, bonded directly to the same non-benzenoid carbons, or the enolate thereof. (e.g., beta-diketone chelates, acetylacetonates, etc.)

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}
40.~.~ Plural -C(=X)- groups, wherein X is chalcogen, bonded directly to the same non-benzenoid carbons, or the enolate thereof. (e.g., beta-diketone chelates, acetylacetonates, etc.) {1}
41  DF  .~.~.~> Carbon or halogen bonded directly to the metal

DEFINITION

Classification: 556/40

(under subclass 1) Compounds which contain at least two -C(=X)- groups, wherein X chalcogen (i.e., oxygen, sulfur, selenium or tellurium) bonded directly to the same nonbenzenoid carbon, or the enolate thereof.

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

(2) Note. Excluded from this subclass are metal salicylates, ortho-hydroxy-benzoplenones, and hydroxy indanones, such as: [figure] [figure] [figure]