US PATENT SUBCLASS 987 / 209
.~ Pentavalent P containing the structure P-(X-C) wherein a S, Se, or Te is directly bonded to the P atom and wherein X is chalcogen (X may qualify as the required S, Se, or Te atom) (9/16; 9/165; 9/165A1)

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987 /   HD   ORGANIC COMPOUNDS CONTAINING A Bi, Sb, As, OR P ATOM OR CONTAINING A METAL ATOM OF THE 6TH TO 8TH GROUP OF THE PERIODIC SYSTEM

30  DF  PHOSPHORUS COMPOUNDS (9/02; 9/06) {15}
209.~ Pentavalent P containing the structure P-(X-C) wherein a S, Se, or Te is directly bonded to the P atom and wherein X is chalcogen (X may qualify as the required S, Se, or Te atom) (9/16; 9/165; 9/165A1) {6}
210  DF  .~.~> Two or more P atoms (9/165A6; 9/165B)
211  DF  .~.~> Containing the structure P-(X-*acyl), P-(X-*Z) or P-(X-*cyano) wherein Z is other than C, H, or a salt forming moiety and * indicates a direct bond to the adjacent X atom (9/165A9; 9/165A9+M; 9/165A9+Q; 9/165A9+U)
212  DF  .~.~> Containing the structure P-(X-aryl ring) (9/18) {1}
214  DF  .~.~> Containing the structure P-(X-carbocyclic ring) (9/177)
215  DF  .~.~> Containing the structure P-(X-ethylenic group) (9/173)
216  DF  .~.~> Containing the structure P-(X-unsubstituted alkyl) wherein all of the X atoms in the molecule which are single bonded to the P atom are bound directly to carbon radicals containing only carbon and hydrogen atoms (9/17)

DEFINITION

Classification: 987/209

Pentavalent P containing the structure P-(X-C) wherein a S, Se, or Te is directly bonded to the P atom and wherein X is chalcogen (X may qualify as the required S, Se, or Te atom) (9/16; 9/165; 9/165A1):

(under subclass 30) Subject matter wherein the P atom in the compound is pentavalent and where the compound has any of the following structures: P-(S-C), P-(Se-C), P-(Te-C), S-P-(O-C), Se-P-(O-C), Te-P-(O-C) where (a) P is bonded directly to a sulfur, selenium, or tellurium atom and a carbon atom is bonded directly to the sulfur, selenium, or tellurium atom or (b) where an atom of sulfur, selenium, or tellurium atom is bonded directly to the P atom and a O-C group is also bonded directly to the P atom through the O atom and the carbon atom is directly bonded to the O atom.

(1) Note. It is permissible for the S, Se, or Te atom to be double bonded to the P atom.

SEE OR SEARCH THIS CLASS, SUBCLASS:

216, when all of the carbon atoms are directly bonded to the chalcogen atoms which are bonded directly to P, the carbon atoms are substituted by only hydrogen or hydrogen and carbon atoms.