US PATENT SUBCLASS 987 / 203
.~ Pentavalent P containing the structure (Hal)-P(X-C) wherein X is a chalcogen atom (9/14)

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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}
203.~ Pentavalent P containing the structure (Hal)-P(X-C) wherein X is a chalcogen atom (9/14) {2}
204  DF  .~.~> S, Se, or Te is bonded directly to the P atom (9/20; 9/20B2; 9/20B4)
205  DF  .~.~> Containing the structure (Hal)-P-(O-ethylenic) or (Hal)-P-(O-aryl) (9/14B2; 9/14B4)

DEFINITION

Classification: 987/203

Pentavalent P containing the structure (Hal)-P(X-C) wherein X is a chalcogen atom (9/14):

(under subclass 30) Subject matter wherein the P atom in the compound is pentavalent and where the compound has the structure (Hal)-P(X-C) where at least one halogen atom and at least one X atom (X is chalcogen) are directly bonded to the P atom and a carbon atom is directly bonded to the X atom.